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Population and Poverty Estimates

County of Los Angeles had loaded numerous population and poverty estimates at either the Census Tract level or Census Tract-City split areas by age, gender, and/or race-ethnicity into the eGIS_Demographic database and the internal networked drive (members\Demography folder).  These datasets are proprietary estimates acquired by Los Angeles County for internal analysis.  County departments and agencies who pay for yearly subscription cost to the eGIS membership program will be provided access to the datasets.

The Demography Workgroup Committee of Los Angeles County had approved in January, 2016 to release the above demographic datasets to the public users but requiring the public users to:

Click and Read the Agreement of  Terms of Use.

If you do not find the requested datasets here and want to explore the population/poverty datasets, then the Census Bureau website will be your choice.  Here are two links for your reference:
1) American FactFinder
2) American Community Survey (ACS)

Purpose

  • The County needs to estimate populations on a yearly basis in order to improve its understanding of population shifts in order to provide services more effectively as populations move.

Description

  • Detailed geographic breakdown of these estimates – by Tract-City split rather than just by tract
  • One-year estimate of this information, while the Census estimates at geographic areas like tracts are 5-year averages

Method

Population: The base population numbers come from the 2010 Census SF1 from which we extract and aggregate data into age, race-ethnicity, and gender. The preliminary estimates (as of July 1 of each year) are obtained by applying mortality and migration rates to the 2010 Census estimates. The preliminary estimates are controlled to age, race-ethnicity, and gender proportions from the Census Bureau’s county estimates for previous year. Finally the estimates are controlled to CA DOF estimates for cities and County.

Poverty: For the poverty estimates, poverty rates are calculated from the American Community Survey (ACS) 5-Year Public Use Microdata Sample (PUMS) data for Public Use Microdata Areas (PUMAs) by race-ethnicity and age. Census tract level poverty rates are obtained by multiplying the ACS 5-Year PUMA rates by the ratio of each tract’s total poverty rate divided by its PUMA total poverty rate. The poverty numbers are controlled to County level poverty rates by race-ethnicity, which are projections from the previous year ACS 1-Year PUMS data file. As a final step, the estimates of poverty are smoothed so that changes from the estimates of previous year are not too extreme for any tract.

List of Full Datasets

eGIS_Demographic Database:

  • EGIS_POPULATION_ESTIMATES_TREND_CT10 – Annual estimate of general population joined to the 2010 Census Tracts boundary file
  • EGIS_POVERTY_ESTIMATES_2010_CT10FIP10 – 2010 poverty estimates at Census Tract-City split areas

eGIS Internal Networked Drive under “members\Demography” folder – Files located under the “Source” folder are the original source files and no modifications have been made to the source files. Files located in the “GIS” folder consist of population estimate datasets that are tied to a spatial boundary file. Accompanying metadata are located in each folder. Ask your GIS Coordinator or Manager for access information.

We had packaged each year’s datasets with the compressed (.zip) file for the public users to download as following:

2000-2009 > Source

  • PopEst_2000_2009_CT10_HD2012_SA2012.dbf – 2000-2009 population estimates at Census Tract 2010 level

2000-2009 > Source > Adjusted

  • Pop00july_5yr_ct00fip00_smoothed.dbf – 2000 population estimates at Census Tract-City split areas
  • Pop01july_5yr_ct00fip00_smoothed.dbf – 2001 population estimates at Census Tract-City split areas
  • Pop02july_5yr_ct00fip00_smoothed.dbf – 2002 population estimates at Census Tract-City split areas
  • Pop03july_5yr_ct00fip00_smoothed.dbf – 2003 population estimates at Census Tract-City split areas
  • Pop04july_5yr_ct00fip00_smoothed.dbf – 2004 population estimates at Census Tract-City split areas
  • Pop05july_5yr_ct00fip00_smoothed.dbf – 2005 population estimates at Census Tract-City split areas

2000-2009 > Source > Unadjusted

  • Pop06july_5yr_ct00fip00.dbf – 2006 population estimates at Census Tract-City split areas
  • Pop07july_5yr_ct00fip00.dbf – 2007 population estimates at Census Tract-City split areas
  • Pop08july_5yr_ct00fip00.dbf – 2008 population estimates at Census Tract-City split areas
  • Pop09july_5yr_ct00fip00.dbf – 2009 population estimates at Census Tract-City split areas

2010 > Source

  • PopEst2010_CT10FIP10_age_race_gender.dbf – 2010 population estimates of race by gender and age at Census Tract-City split areas
  • PopEst2010_CT10FIP10_age_race_gender_summary.dbf – 2010 population estimates summarized by age, race, and gender at Census Tract-City split areas
  • PovEst2010_100FPL_CT10FIP10_race.dbf – 2010 estimate of population in poverty below the 100% poverty level by race at Census Tract-City split areas
  • PovEst2010_130FPL_CT10FIP10_race.dbf – 2010 estimate of population in poverty below the 130% poverty level by race at Census Tract-City split areas
  • PovEst2010_133FPL_CT10FIP10_race.dbf – 2010 estimate of population in poverty below the 133% poverty level by race at Census Tract-City split areas
  • PovEst2010_200FPL_CT10FIP10_race.dbf – 2010 estimate of population in poverty below the 200% poverty level by race at Census Tract-City split areas

2010 > GIS

  • CT10FIP10 – 2010 Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2010_AFRICAN_AMERICAN_CT10FIP10 – 2010 population estimates of Black or African American Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2010_AMERICAN_INDIAN_CT10FIP10 – 2010 population estimates of American Indian or Alaskan Native Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2010_ASIAN_CT10FIP10 – 2010 population estimates of Asian Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2010_HISPANIC_CT10FIP10 – 2010 population estimates of Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2010_PACIFIC_ISLANDER_CT10FIP10 – 2010 population estimates of Pacific Islanders or Hawaiian Native Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2010_WHITE_CT10FIP10 – 2010 population estimates of White Non-Hispanics by gender and age at Census Tract-City split areas

2011 > Source

  • PopEst2011_CT10FIP10_age_race_gender.dbf – 2011 population estimates of race by gender and age at Census Tract-City split areas
  • PopEst2011_CT10FIP10_age_race_gender_summary.dbf – 2011 population estimates summarized by age, race, and gender at Census Tract-City split areas
  • PovEst2011_100FPL_CT10FIP10_race.dbf – 2011 estimate of population in poverty below the 100% poverty level by race at Census Tract-City split areas
  • PovEst2011_130FPL_CT10FIP10_race.dbf – 2011 estimate of population in poverty below the 130% poverty level by race at Census Tract-City split areas
  • PovEst2011_133FPL_CT10FIP10_race.dbf – 2011 estimate of population in poverty below the 133% poverty level by race at Census Tract-City split areas
  • PovEst2011_200FPL_CT10FIP10_race.dbf – 2011 estimate of population in poverty below the 200% poverty level by race at Census Tract-City split areas

2011 > GIS

  • CT10FIP10 – 2011 updated Census Tract-City split areas, no change in 2011
  • EGIS_POP_ESTIMATES_2011_AFRICAN_AMERICAN_CT10FIP10 – 2011 population estimates of Black or African American Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2011_AMERICAN_INDIAN_CT10FIP10 – 2011 population estimates of American Indian or Alaskan Native Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2011_ASIAN_CT10FIP10 – 2011 population estimates of Asian Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2011_HISPANIC_CT10FIP10 – 2011 population estimates of Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2011_PACIFIC_ISLANDER_CT10FIP10 – 2011 population estimates of Pacific Islander or Hawaiian Native Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2011_WHITE_CT10FIP10 – 2011 population estimates of White Non-Hispanics or Hawaiian Native Non-Hispanics by gender and age at Census Tract-City split areas

2012 > Source

  • PopEst2012_CT10FIP10_age_race_gender.dbf – 2012 population estimates of race by gender and age at Census Tract-City split areas
  • PopEst2012_CT10FIP10_age_race_gender_summary.dbf – 2012 population estimates summarized by age, race, and gender at Census Tract-City split areas
  • PovEst2012_100FPL_CT10FIP10_race.dbf – 2012 estimate of population in poverty below the 100% poverty level by race at Census Tract-City split areas
  • PovEst2012_130FPL_CT10FIP10_race.dbf – 2012 estimate of population in poverty below the 130% poverty level by race at Census Tract-City split areas
  • PovEst2012_133FPL_CT10FIP10_race.dbf – 2012 estimate of population in poverty below the 133% poverty level by race at Census Tract-City split areas
  • PovEst2012_200FPL_CT10FIP10_race.dbf – 2012 estimate of population in poverty below the 200% poverty level by race at Census Tract-City split areas

2012 > Source > Child Care Estimates

  • 2012 children below 70% SMI by tract.dbf – 2012 child population in families with incomes at or below 70% of the State of California Median Income (SMI)
  • 2012 children below FPL by tract-city.dbf – 2012 child population for 0-5 by single-year age and gender cohorts at or below 100%, 130%, 133%, and 200% federal poverty level
  • 2012 child pop by tract.dbf – 2012 children population of age 12 and under
  • 2012 children with working parents by tract.dbf – 2012 children population with single working parent or two working parents
  • 2012 Children with wrkng prnts below FPL by tract-city.dbf – 2012 child population with single working parents or two working parents with incomes at or below 100%, 130%, 133%, and 200% federal poverty level
  • 2012 Children with wrkng Prnts with Incm LE 70% SMI by tract.dbf – 2012 child population with single working parent or two working parents with incomes at or below 70% of the State of California Median Income (SMI)

2012 > Source > Uninsured and Medi-Cal Eligible Estimates

  • 2012 Medi-Cal eligibles 2013-06-22.dbf – 2012 population estimates of persons without medical insurance eligible for Medi-Cal by Census Tract-City split areas
  • 2012 Uninsured Pop by Pov level 2013-06-22.dbf – 2012 population estimates of persons without medical insurance by Census Tract-City split areas

2012 > GIS

  • CT10FIP10_2012 – 2012 updated Census Tract-City split areas
    IMPORTANT ! It has been updated to the 2012 Census Geography Update, which merged Tracts 1370.00 and 9304.01 into the combined tract 1370.00. So the CT10 field actually reflects the 2012 Census update, which is used for all population products.
  • EGIS_POP_ESTIMATES_2012_AFRICAN_AMERICAN_CT10FIP10 – 2012 population estimates of Black or African American Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2012_AMERICAN_INDIAN_CT10FIP10 – 2012 population estimates of American Indian or Alaskan Native Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2012_ASIAN_CT10FIP10 – 2012 population estimates of Asian Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2012_HISPANIC_CT10FIP10 – 2012 population estimates of Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2012_PACIFIC_ISLANDER_CT10FIP10 – 2012 population estimates of Pacific Islanders or Hawaiian Native Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2012_WHITE_CT10FIP10 – 2012 population estimates of White Non-Hispanics by gender and age at Census Tract-City split areas

2013 > Source

  • PopEst2013_CT10FIP13_age_race_gender_y150719.dbf – 2013 population estimates of race by gender and age at Census Tract-City split areas
  • PopEst2013_CT10FIP13_age_race_gender_summary_y150719.dbf – 2013 population estimates summarized by age, race, and gender at Census Tract-City split areas
  • PovEst2013_100FPL_CT10FIP13_race.dbf – 2013 estimate of population in poverty below the 100% poverty level by race at Census Tract-City split areas
  • PovEst2013_130FPL_CT10FIP13_race.dbf – 2013 estimate of population in poverty below the 130% poverty level by race at Census Tract-City split areas
  • PovEst2013_133FPL_CT10FIP13_race.dbf – 2013 estimate of population in poverty below the 133% poverty level by race at Census Tract-City split areas
  • PovEst2013_200FPL_CT10FIP13_race.dbf – 2013 estimate of population in poverty below the 200% poverty level by race at Census Tract-City split areas

2013 > Source > Child Care Estimates

  • 2013 children below 70% SMI by tract.dbf – 2013 child population in families with incomes at or below 70% of the State of California Median Income (SMI)
  • 2013 children below FPL by tract-city.dbf – 2013 child population for 0-5 by single-year age and gender cohorts at or below 100%, 130%, 133%, and 200% federal poverty level
  • 2013 child pop by tract.dbf – 2013 children population of age 12 and under
  • 2013 children with working parents by tract.dbf – 2013 children population with single working parent or two working parents
  • 2013 Children with wrkng prnts below FPL by tract-city.dbf – 2013 child population with single working parents or two working parents with incomes at or below 100%, 130%, 133%, and 200% federal poverty level
  • 2013 Children with wrkng Prnts with Incm LE 70% SMI by tract.dbf – 2013 child population with single working parent or two working parents with incomes at or below 70% of the State of California Median Income (SMI)

2013 > Source > Uninsured and Medi-Cal Eligible Estimates

  • 2013 Medi-Cal eligibles 2015-07-27.dbf – 2013 population estimates of persons without medical insurance eligible for Medi-Cal by Census Tract-City split areas
  • 2013 Uninsured Pop by Pov level 2015-07-27.dbf – 2013 population estimates of persons without medical insurance by Census Tract-City split areas

2013 > GIS

  • CT10FIP13 – 2013 updated Census Tract-City split areas, some city boundaries had been changed due to annexations
  • EGIS_POP_ESTIMATES_2013_AFRICAN_AMERICAN_CT10FIP13 – 2013 population estimates of Black or African American Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2013_AMERICAN_INDIAN_CT10FIP13 – 2013 population estimates of American Indian or Alaskan Native Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2013_ASIAN_CT10FIP13 – 2013 population estimates of Asian Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2013_HISPANIC_CT10FIP13 – 2013 population estimates of Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2013_PACIFIC_ISLANDER_CT10FIP13 – 2013 population estimates of Pacific Islanders or Hawaiian Native Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2013_WHITE_CT10FIP13 – 2013 population estimates of White Non-Hispanics by gender and age at Census Tract-City split areas

2014 > Source

  • PopEst2014_CT10FIP14_age_race_gender_y150714.dbf – 2014 population estimates of race by gender and age at Census Tract-City split areas
  • PopEst2014_CT10FIP14_age_race_gender_summary_y150714.dbf – 2014 population estimates summarized by age, race, and gender at Census Tract-City split areas
  • PovEst2014_100FPL_CT10FIP14_race.dbf – 2014 estimate of population in poverty below the 100% poverty level by race at Census Tract-City split areas
  • PovEst2014_130FPL_CT10FIP14_race.dbf – 2014 estimate of population in poverty below the 130% poverty level by race at Census Tract-City split areas
  • PovEst2014_133FPL_CT10FIP14_race.dbf – 2014 estimate of population in poverty below the 133% poverty level by race at Census Tract-City split areas
  • PovEst2014_200FPL_CT10FIP14_race.dbf – 2014 estimate of population in poverty below the 200% poverty level by race at Census Tract-City split areas

2014 > Source > Child Care Estimates

  • 2014 children below 70% SMI by tract.dbf – 2014 child population in families with incomes at or below 70% of the State of California Median Income (SMI)
  • 2014 children below FPL by tract-city.dbf – 2014 child population for 0-5 by single-year age and gender cohorts at or below 100%, 130%, 133%, and 200% federal poverty level
  • 2014 child pop by tract.dbf – 2014 children population of age 12 and under
  • 2014 children with working parents by tract.dbf – 2014 children population with single working parent or two working parents
  • 2014 Children with wrkng prnts below FPL by tract-city.dbf – 2014 child population with single working parents or two working parents with incomes at or below 100%, 130%, 133%, and 200% federal poverty level
  • 2014 Children with wrkng Prnts with Incm LE 70% SMI by tract.dbf – 2014 child population with single working parent or two working parents with incomes at or below 70% of the State of California Median Income (SMI)

2014 > Source > Uninsured and Medi-Cal Eligible Estimates

  • 2014 Medi-Cal eligibles 2015-06-24.dbf – 2014 population estimates of persons without medical insurance eligible for Medi-Cal by Census Tract-City split areas
  • 2014 Uninsured Pop by Pov level 2015-06-24.dbf – 2014 population estimates of persons without medical insurance by Census Tract-City split areas

2014 > GIS

  • CT10FIP14 – 2014 updated Census Tract-City split areas, some city boundaries had been changed due to annexations
  • EGIS_POP_ESTIMATES_2014_AFRICAN_AMERICAN_CT10FIP14 – 2014 population estimates of Black or African American Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2014_AMERICAN_INDIAN_CT10FIP14 – 2014 population estimates of American Indian or Alaskan Native Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2014_ASIAN_CT10FIP14 – 2014 population estimates of Asian Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2014_HISPANIC_CT10FIP14 – 2014 population estimates of Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2014_PACIFIC_ISLANDER_CT10FIP14 – 2014 population estimates of Pacific Islanders or Hawaiian Native Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2014_WHITE_CT10FIP14 – 2014 population estimates of White Non-Hispanics by gender and age at Census Tract-City split areas

2015 > Source

  • PopEst2015_CT10FIP15_age_race_gender.dbf – 2015 population estimates of race by gender and age at Census Tract-City split areas
  • PopEst2015_CT10FIP15_age_race_gender_summary.dbf – 2015 population estimates summarized by age, race, and gender at Census Tract-City split areas
  • PovEst2015_100FPL_CT10FIP15_race.dbf – 2015 estimate of population in poverty below the 100% poverty level by race at Census Tract-City split areas
  • PovEst2015_130FPL_CT10FIP15_race.dbf – 2015 estimate of population in poverty below the 130% poverty level by race at Census Tract-City split areas
  • PovEst2015_133FPL_CT10FIP15_race.dbf – 2015 estimate of population in poverty below the 133% poverty level by race at Census Tract-City split areas
  • PovEst2015_200FPL_CT10FIP15_race.dbf – 2015 estimate of population in poverty below the 200% poverty level by race at Census Tract-City split areas

2015 > Source > Child Care Estimates

  • 2015 children below 70% SMI by tract.dbf – 2015 child population in families with incomes at or below 70% of the State of California Median Income (SMI)
  • 2015 children below FPL by tract-city.dbf – 2015 child population for 0-5 by single-year age and gender cohorts at or below 100%, 130%, 133%, and 200% federal poverty level
  • 2015 child pop by tract.dbf – 2015 children population of age 12 and under
  • 2015 children with working parents by tract.dbf – 2015 children population with single working parent or two working parents
  • 2015 Children with wrkng prnts below FPL by tract-city.dbf – 2015 child population with single working parents or two working parents with incomes at or below 100%, 130%, 133%, and 200% federal poverty level
  • 2015 Children with wrkng Prnts with Incm LE 70% SMI by tract.dbf – 2015 child population with single working parent or two working parents with incomes at or below 70% of the State of California Median Income (SMI)

2015 > Source > Uninsured and Medi-Cal Eligible Estimates

  • 2015 Medi-Cal eligibles 2016-06-10.dbf – 2015 population estimates of persons without medical insurance eligible for Medi-Cal by Census Tract-City split areas
  • 2015 Uninsured Pop by Pov level 2016-06-10.dbf – 2015 population estimates of persons without medical insurance by Census Tract-City split areas

2015 > GIS

  • CT10FIP15 – 2015 updated Census Tract-City split areas, some city boundaries had been changed due to annexations
  • EGIS_POP_ESTIMATES_2015_AFRICAN_AMERICAN_CT10FIP15 – 2015 population estimates of Black or African American Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2015_AMERICAN_INDIAN_CT10FIP15 – 2015 population estimates of American Indian or Alaskan Native Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2015_ASIAN_CT10FIP15 – 2015 population estimates of Asian Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2015_HISPANIC_CT10FIP15 – 2015 population estimates of Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2015_PACIFIC_ISLANDER_CT10FIP15 – 2015 population estimates of Pacific Islanders or Hawaiian Native Non-Hispanics by gender and age at Census Tract-City split areas
  • EGIS_POP_ESTIMATES_2015_WHITE_CT10FIP15 – 2015 population estimates of White Non-Hispanics by gender and age at Census Tract-City split areas

2016 > Source

  • PopEst2016_CT10FIP16_CSA_age_race_gender.dbf – 2016 population estimates of race by gender and age at Census Tract-City-CSA split areas
  • PopEst2016_CT10FIP16_CSA_age_race_gender_summary.dbf – 2016 population estimates summarized by age, race, and gender at Census Tract-City-CSA split areas
  • PovEst2016_100FPL_CT10FIP16_CSA_race.dbf – 2016 estimate of population in poverty below the 100% poverty level by race at Census Tract-City-CSA split areas
  • PovEst2016_130FPL_CT10FIP16_CSA_race.dbf – 2016 estimate of population in poverty below the 130% poverty level by race at Census Tract-City-CSA split areas
  • PovEst2016_133FPL_CT10FIP16_CSA_race.dbf – 2016 estimate of population in poverty below the 133% poverty level by race at Census Tract-City-CSA split areas
  • PovEst2016_200FPL_CT10FIP16_CSA_race.dbf – 2016 estimate of population in poverty below the 200% poverty level by race at Census Tract-City-CSA split areas

2016 > Source > Child Care Estimates

  • 2016 children below 70% SMI by tract.dbf – 2016 child population in families with incomes at or below 70% of the State of California Median Income (SMI)
  • 2016 children below FPL by tract-city-csa.dbf – 2016 child population for 0-5 by single-year age and gender cohorts at or below 100%, 130%, 133%, and 200% federal poverty level
  • 2016 child pop by tract.dbf – 2016 children population of age 12 and under
  • 2016 children with working parents by tract.dbf – 2016 children population with single working parent or two working parents
  • 2016 Children with wrkng prnts below FPL by tract-city-csa.dbf – 2016 child population with single working parents or two working parents with incomes at or below 100%, 130%, 133%, and 200% federal poverty level
  • 2016 Children with wrkng Prnts with Incm LE 70% SMI by tract.dbf – 2016 child population with single working parent or two working parents with incomes at or below 70% of the State of California Median Income (SMI)

2016 > Source > Uninsured and Medi-Cal Eligible Estimates

  • 2016 Medi-Cal eligibles 2017-06-01.dbf – 2016 population estimates of persons without medical insurance eligible for Medi-Cal by Census Tract-City split areas
  • 2016 Uninsured Pop by pov level 2017-06-01.dbf – 2016 population estimates of persons without medical insurance by Census Tract-City split areas

2016 > GIS

  • CT10FIP16CSA – 2016 updated Census Tract-City-CSA split areas, some city boundaries had been changed due to annexations
    CSA (Countywide Statistical Area): The CSA was defined to provide a common geographic boundary for reporting departmental statistics for unincorporated areas and incorporated Los Angeles city to the Board of Supervisors.

2017 > Source

  • PopEst2017_CT10FIP17_CSA_age_race_gender.dbf – 2017 population estimates of race by gender and age at Census Tract-City-CSA split areas
  • PopEst2017_CT10FIP17_CSA_age_race_gender_summary.dbf – 2017 population estimates summarized by age, race, and gender at Census Tract-City-CSA split areas
  • PovEst2017_100FPL_CT10FIP17_CSA_race.dbf – 2017 estimate of population in poverty below the 100% poverty level by race at Census Tract-City-CSA split areas
  • PovEst2017_130FPL_CT10FIP17_CSA_race.dbf – 2017 estimate of population in poverty below the 130% poverty level by race at Census Tract-City-CSA split areas
  • PovEst2017_133FPL_CT10FIP17_CSA_race.dbf – 2017 estimate of population in poverty below the 133% poverty level by race at Census Tract-City-CSA split areas
  • PovEst2017_200FPL_CT10FIP17_CSA_race.dbf – 2017 estimate of population in poverty below the 200% poverty level by race at Census Tract-City-CSA split areas

2017 > Source > Child Care Estimates

  • 2017 children below 70% SMI by tract.dbf – 2017 child population in families with incomes at or below 70% of the State of California Median Income (SMI)
  • 2017 children below FPL by tract-city-csa.dbf – 2017 child population for 0-5 by single-year age and gender cohorts at or below 100%, 130%, 133%, and 200% federal poverty level
  • 2017 child pop by tract.dbf – 2017 children population of age 12 and under
  • 2017 children with working parents by tract.dbf – 2017 children population with single working parent or two working parents
  • 2017 Children with wrkng prnts below FPL by tract-city-csa.dbf – 2017 child population with single working parents or two working parents with incomes at or below 100%, 130%, 133%, and 200% federal poverty level
  • 2017 Children with wrkng Prnts with Incm LE 70% SMI by tract.dbf – 2017 child population with single working parent or two working parents with incomes at or below 70% of the State of California Median Income (SMI)

2017 > Source > Uninsured and Medi-Cal Eligible Estimates

  • 2017 Medi-Cal Eligibles.dbf – 2017 population estimates of persons without medical insurance eligible for Medi-Cal by Census Tract-City split areas
  • 2017 Uninsured Pop by pov level.dbf – 2017 population estimates of persons without medical insurance by Census Tract-City split areas

2017 > GIS

  • CT10FIP17CSA – 2017 updated Census Tract-City-CSA split areas, some city boundaries had been changed due to annexations
    CSA (Countywide Statistical Area): The CSA was defined to provide a common geographic boundary for reporting departmental statistics for unincorporated areas and incorporated Los Angeles city to the Board of Supervisors.

General Attribute information

  • Geographic Variables:

CT10 = 2010 census tract identification number

FIPS10 = 2010 census city identification code

FIPS17 = 2017 census city identification code

  • Population and Poverty Variables

First character indicates Ethnicity:

w = White Non-Hispanics

b = Black or African American Non-Hispanics

i = American Indian or Alaskan Native Non-Hispanics

a = Asian Non-Hispanics

p = Pacific Islander or Hawaiian Native Non-Hispanics

h = Hispanic

Second character indicates Gender:

f = Female

m = Male

  • The Third and Fourth characters indicate Year. For example,

yy =  2017

  • If the Fifth character is an underscore, the variable is a population estimate. If the Fifth character is a letter, it indicates a federal poverty level estimate. For example,

“_” =  population estimate

“a” = estimate of persons below the 100% poverty level

“b” = estimate of persons below the 130% poverty level

“c” = estimate of persons below the 133% poverty level

“d” = estimate of persons below the 200% poverty level

  • Below table is the definition of variables and labels for population estimate

Variable         Label                                                    Variable       Label   

xmyy_0          Male Pop 20yy Age <1                           xfyy_0         Female Pop 20yy Age <1

xmyy_1          Male Pop 20yy Age 1                             xfyy_1         Female Pop 20yy Age 1

xmyy_2          Male Pop 20yy Age 2                             xfyy_2         Female Pop 20yy Age 2

xmyy_3          Male Pop 20yy Age 3                             xfyy_3         Female Pop 20yy Age 3

xmyy_4          Male Pop 20yy Age 4                             xfyy_4         Female Pop 20yy Age 4

xmyy_5          Male Pop 20yy Age 5                             xfyy_5         Female Pop 20yy Age 5

xmyy_6          Male Pop 20yy Age 6-9                          xfyy_6         Female Pop 20yy Age 6-9

xmyy_10        Male Pop 20yy Age 10-12                      xfyy_10        Female Pop 20yy Age 10-12

xmyy_13        Male Pop 20yy Age 13-14                      xfyy_13        Female Pop 20yy Age 13-14

xmyy_15        Male Pop 20yy Age 15-17                      xfyy_15        Female Pop 20yy Age 15-17

xmyy_18        Male Pop 20yy Age 18-19                      xfyy_18        Female Pop 20yy Age 18-19

xmyy_20        Male Pop 20yy Age 20-24                      xfyy_20        Female Pop 20yy Age 20-24

xmyy_25        Male Pop 20yy Age 25-29                      xfyy_25        Female Pop 20yy Age 25-29

xmyy_30        Male Pop 20yy Age 30-34                      xfyy_30        Female Pop 20yy Age 30-34

xmyy_35        Male Pop 20yy Age 35-39                      xfyy_35        Female Pop 20yy Age 35-39

xmyy_40        Male Pop 20yy Age 40-44                      xfyy_40        Female Pop 20yy Age 40-44

xmyy_45        Male Pop 20yy Age 45-49                      xfyy_45        Female Pop 20yy Age 45-49

xmyy_50        Male Pop 20yy Age 50-54                      xfyy_50        Female Pop 20yy Age 50-54

xmyy_55        Male Pop 20yy Age 55-59                      xfyy_55        Female Pop 20yy Age 55-59

xmyy_60        Male Pop 20yy Age 60-64                      xfyy_60        Female Pop 20yy Age 60-64

xmyy_65        Male Pop 20yy Age 65-69                      xfyy_65        Female Pop 20yy Age 65-69

xmyy_70        Male Pop 20yy Age 70-74                      xfyy_70        Female Pop 20yy Age 70-74

xmyy_75        Male Pop 20yy Age 75-79                      xfyy_75        Female Pop 20yy Age 75-79

xmyy_80        Male Pop 20yy Age 80-84                      xfyy_80        Female Pop 20yy Age 80-84

xmyy_85        Male Pop 20yy Age 85-89                      xfyy_85        Female Pop 20yy Age 85-89

xmyy_90        Male Pop 20yy Age 90-94                      xfyy_90        Female Pop 20yy Age 90-94

xmyy_95        Male Pop 20yy Age 95-99                      xfyy_95        Female Pop 20yy Age 95-99

xmyy_100      Male Pop 20yy Age 100+                       xfyy_100      Female Pop 20yy Age 100+

  • Note:  x-Ethnicity,  m-Male,  f-Female,  yy-Two Digits for Year

Date Created/Updated

  • Population is estimated for July 1 of each year
  • Poverty is estimated for July 1 of each year

Source

2010 Census Summary File 1

American Community Survey Summary File and PUMS file

Annual Population estimate by the California Department of Finance, Demographic Research Unit

Data Limitations

Population estimates are not perfect because the source data files, even the baseline counts from the 2010 Census, contain errors. Reasonable modeling assumptions about fertility, mortality, migration and poverty trends since the last census will not work perfectly for every age, sex, and race-ethnicity group in every tract-city split. In updating the 2010 counts, we look for evidence of unusual population trends in city population estimates from the California Department of Finance, county population estimates from the Bureau of the Census, and Public Use Microsample Area (PUMA) level data from the Bureau’s annual American Community Survey (ACS). We also use Los Angeles County administrative records files that include births, deaths, licensed drivers, registered voters, housing unit files and school enrollments. We make adjustments to our tract-city level estimates to reflect unusual trends, but information on unusual trends is typically not precise and not complete.

We recommend that data users perform analyses with populations greater than 25,000 by merging tract-city splits or by combining age, sex, race/ethnicity categories. Our data file contains estimates for single year age cohorts and six race-ethnicity groups, which provide substantial detail for analysts. These detailed data categories are there to provide the users with flexibility in doing analyses, however, the users need to be prudent and not work with cell numbers that are too small. There are no simple, precise ways to measure the error in estimates. Groups and areas that have high migration, are usually more difficult to model. We expect from past experience that most aggregates of our data above 25,000 persons will be within 1 percent of the number that would be obtained if another census had been conducted for that year. Aggregates of our data under 500 persons could easily differ by 10% or more from what another census would show.

In addition, the user should keep in mind that the 2010 Census, as all censuses, had undercount and overcount errors. Minorities, mobile, rural, elderly and other populations that are more difficult to count with standard mail questionnaires are less likely to be counted. Persons with multiple residences are more likely to be double counted. These errors are built into all estimates that use the decennial census as a base estimate.

Contact Information

If you have further questions about these datasets, please contact the Enterprise GIS program (click here to send email) or to contact Victor Chen (click here to send email) or Phone: (562) 658-1799.

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Data Field Descriptions

GIS Source Information
Database Name: eGIS_Demographic
Feature Class Name:
Feature Dataset Name (if applicable):
Reference Date:
Accuracy: Other
Update Frequency: As Needed
Access Constraints:County

Contact Information
Victor Chen

County of Los Angeles
Internal Services Department
9150 Imperial Highway
Mail Stop #42
Downey, CA, 90242
VChen@isd.lacounty.gov
(562) 658-1799

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