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2020 Census 2030 Census American Community Survey (ACS) American Housing Survey (AHS) Annual Business Survey (ABS) Annual Survey of Manufactures (ASM) Census of Governments County Business Patterns (CBP) Current Population Survey (CPS) Economic Census International Programs Metro and Micro Areas Population Estimates Population Projections Small Area Income and Poverty Statistics of U.S. Businesses Survey of Business Owners Survey of Income and Program Participation (SIPP)
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Methodology

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Within Technical Documentation

Methodology

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

Vintage 2021

Nation, States, Counties, and Puerto Rico Population

pdf Methodology [< 1.0 MB]
pdf Release Notes [< 1.0 MB]

Housing Units

pdf Methodology [< 1.0 MB]

City and Town Population

Incorporated Places and Minor Civil Divisions

pdf Methodology [< 1.0 MB]

Vintage 2020

Nation, States, Counties, and Puerto Rico Population

pdf Methodology [<1.0 MB]
pdf Release Notes [<1.0 MB]

Housing Units

pdf Methodology [<1.0 MB]

City and Town Population

Incorporated Places and Minor Civil Divisions

pdf Methodology [<1.0 MB]

Vintage 2019

Nation, States, Counties, and Puerto Rico Population

pdf Methodology [<1.0 MB]
pdf Release Notes [< 1.0 MB]

City and Town Population

Incorporated Places and Minor Civil Divisions

pdf Methodology [<1.0 MB]

Housing Units

pdf Methodology [<1.0 MB]
pdf Release Notes [<1.0MB]

Intercensal Estimates

2000-2010 Intercensal Estimates

pdf Methodology [<1.0 MB]

1990-2000 Intercensal Estimates

pdf Methodology [<1.0 MB]

Demographic Analysis

2020 Demographic Analysis Estimates

pdf Methodology [<1.0 MB]

2010 Demographic Analysis Estimates

pdf Methodology [<1.0 MB]

Modified Race Summary Files

2010 Modified Race Data Summary File

pdf Methodology [<1.0 MB]

2000 Modified Race Data Summary File

pdf Methodology, File Layout, and Technical Documentation [<1.0 MB]

Other Methodology Statements

2010-2020 Methodology Statements
1990s Methodology Statements

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