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Census Population Estimates Program (PEP)

The Census Bureau's Population Estimates Program produces the official annual population totals for the nation, states, counties, metropolitan areas, and places between the once-a-decade censuses. It is the source of the population counts used as the denominator for most per-capita rates in this Commons.

License
Public domain
Coverage
Base Data Commons graph
Updates
Yearly

Source & License

  • Publisher: U.S. Census Bureau, Population Estimates Program.
  • Access: Published at census.gov/popest; served into this Commons through the Google Data Commons base graph.
  • License: Public domain. A work of the U.S. Government, free to use and redistribute with attribution to the U.S. Census Bureau.

Methodology

  • Cohort-component method: each year's estimate starts from the most recent decennial census and updates it with administrative records for the components of change — births, deaths, and net migration (domestic and international).
  • Vintages: PEP is released in annual "vintages," and each new vintage revises the entire back-series to the latest decennial base. Numbers for a past year can therefore change between vintages; always read a single vintage as one consistent time series.
  • Reference date: county and place totals are as of July 1 of each year.

Coverage & caveats

  • Geographies: nation, states, counties, metropolitan/micropolitan areas, and incorporated places.
  • Estimates, not counts: PEP figures are modeled estimates, distinct from the decennial census enumeration, and are the Census Bureau's official population numbers for intercensal years.
  • Denominator of record: these totals, not ACS population, are the intended base for official rate calculations.

Variables (1)

VariableSource table
Total population
Count of person.
Population personMeasured countStatistic measured value
Vintage annual population estimates