Population Estimates APIs
Each year, the Census Bureau's Population Estimates Program uses current data on births, deaths, and migration to calculate population change since the most recent decennial census and produces a time series of estimates of population, demographic components of change, and housing units. The annual time series of estimates begins with the most recent decennial census data and extends to the vintage year. As each vintage of estimates includes all years since the most recent decennial census, the latest vintage of data available supersedes all previously-produced estimates for those dates.
Related Information: Population Estimates Categorical Variables
All data queries to the Census Data API now require an API key. Please cut and paste the Example Calls below into your web browser and replace YOUR_KEY_GOES_HERE with your personal API Key.
If you do not have an API Key, request one here. For more information: Watch Video.
Vintage 2015
Note: These products were redesigned in 2015 to provide a better user experience for developers.
Population Estimates
- API Call: api.census.gov/data/2015/pep/population
- Examples and Supported Geographies: api.census.gov/data/2015/pep/population.html
- Variables: api.census.gov/data/2015/pep/population/variables.html
- Example Call: July 1, 2015 Population for all regions
api.census.gov/data/2015/pep/population?get=POP,GEONAME&for=region:*&DATE=8&key=YOUR_KEY
Components of Change Estimates
- API Call: api.census.gov/data/2015/pep/components
- Examples and Supported Geographies: api.census.gov/data/2015/pep/components.html
- Variables: api.census.gov/data/2015/pep/components/variables.html
- Example Call: Number of births and deaths between July 1, 2014 and July 1, 2015
api.census.gov/data/2015/pep/components?get=BIRTHS,DEATHS,GEONAME&for=state:06&PERIOD=6&key=YOUR_KEY
National Monthly Population Estimates
- API Call: api.census.gov/data/2015/pep/natmonthly
- Examples and Supported Geographies: api.census.gov/data/2015/pep/natmonthly.html
- Variables: api.census.gov/data/2015/pep/natmonthly/variables.html
- Example Call: Total population each month from July to December 2015
api.census.gov/data/2015/pep/natmonthly?get=POP&for=us:*&MONTHLY=65:70&key=YOUR_KEY
Demographic Characteristics Estimates by Single Year of Age
- API Call: api.census.gov/data/2015/pep/charage
- Examples and Supported Geographies: api.census.gov/data/2015/pep/charage.html
- Variables: api.census.gov/data/2015/pep/charage/variables.html
- Example Call: July 1, 2015 population in Alabama
api.census.gov/data/2015/pep/charage?get=AGE,POP,GEONAME&for=state:01&key=YOUR_KEY
Demographic Characteristics Estimates by Age Groups
- API Call: api.census.gov/data/2015/pep/charagegroups
- Examples and Supported Geographies: api.census.gov/data/2015/pep/charagegroups.html
- Variables: api.census.gov/data/2015/pep/charagegroups/variables.html
- Example Call: July 1, 2015 population in Alabama
api.census.gov/data/2015/pep/charagegroups?get=POP,GEONAME&for=state:01&DATE=8&key=YOUR_KEY
Housing Unit Estimates for the US, States, and Counties
- API Call: api.census.gov/data/2015/pep/housing
- Examples and Supported Geographies: api.census.gov/data/2015/pep/housing.html
- Variables: api.census.gov/data/2015/pep/housing/variables.html
- Example Call: Housing estimate for the Petersburg census area, Alaska for all dates
api.census.gov/data/2015/pep/housing?get=DATE,GEONAME,HUEST&for=county:195&in=state:02&key=YOUR_KEY
Related Information
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Population Estimates Categorical Variables 2015
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FTP ServerTo download full datasets, visit our FTP Server.
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Population and Housing Unit EstimatesProduces estimates of the population for the United States, its states, counties, cities, and towns, as well as for the Commonwealth of Puerto Rico.