Methodology

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Methodology

These documents describe the input data, methodology, and processes for the creation of population and housing unit estimates for the listed geographies.

This page features the following sections:

Vintage 2024

Vintage 2023

Vintage 2020

Intercensal Estimates

Demographic Analysis

Modified Race Summary Files

Vintage 2024

Nation, States, Counties, and Puerto Rico Population

City and Town Population

Incorporated Places and Minor Civil Divisions

Housing Units

Vintage 2023

Nation, States, Counties, and Puerto Rico Population

City and Town Population

Incorporated Places and Minor Civil Divisions

Housing Units

Vintage 2020

Nation, States, Counties, and Puerto Rico Population

Housing Units

City and Town Population

Incorporated Places and Minor Civil Divisions

Intercensal Estimates

2010-2020 Intercensal Estimates

2000-2010 Intercensal Estimates

1990-2000 Intercensal Estimates

Demographic Analysis

2020 Demographic Analysis Estimates

2010 Demographic Analysis Estimates

Modified Race Summary Files

2020 Modified Race Data Summary File

2010 Modified Race Data Summary File

2000 Modified Race Data Summary File

With each new release of annual estimates, the entire time series of estimates is revised for all years back to the last census. All previously published estimates (e.g. old vintages) are superseded and archived on the FTP2 site.

Page Last Revised - April 24, 2025