Decennial Census · 2020 & 2010

Decennial Census Explorer

The complete count of every person in the United States, conducted every ten years. Unlike the ACS survey, Decennial data is a full enumeration — and it reaches all the way down to the individual city block.

Coverage
100%
Full enumeration, not a sample
Smallest Geography
Block
~11M blocks nationwide
Most Recent
2020
Next: April 2030
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PL 94-171 Redistricting Data — Available Now
Voting Age Population by race at state, county, and VTD (precinct) level. The official data source for district population compliance and Voting Rights Act analysis.
Explore VAP →

DHC 2020 — Demographic & Housing Characteristics

Browse key DHC 2020 variables from the Census Bureau API. Select a topic and variable, choose a geography level, then load the data.

Topic
Variable
2020 DHC — Browse by Topic
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Total Population
Total resident population for all 50 states, counties, tracts, and blocks. The foundational count for apportionment, planning, and resource allocation.
Table P1 DHC 2020 Free
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Race & Ethnicity
Detailed race and Hispanic origin counts — White, Black, Hispanic, Asian, AIAN, NHPI, and multiracial populations — at every geographic level down to the block.
Tables P3–P9 DHC 2020 Free
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Age & Sex
Population by single year of age and sex. Essential for apportionment analysis, school planning, and age-specific program eligibility assessments.
Table PCT12 DHC 2020 Free
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Housing Units & Occupancy
Total housing units, occupied vs. vacant, owner vs. renter. The only source of complete-count housing data below the tract level.
Tables H1–H3 DHC 2020 Free
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Group Quarters
Institutionalized vs. non-institutionalized population — prisons, nursing homes, college dormitories, military barracks. Critical for fair redistricting (prison gerrymandering analysis).
Table P5 DHC 2020 Redistricting
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2020 vs. 2010 Comparison Coming Soon
Side-by-side population change maps and tables between the 2010 and 2020 Decennial Censuses — for states, counties, and tracts.
SF1 2010 DHC 2020
Which Decennial file do I need?
PL 94-171 (Redistricting File) — Released ~6 months after Census Day. Contains total population and Voting Age Population (VAP) by race for every geography down to the block. Legally mandated for legislative redistricting. This is the file behind CensusGo's VAP and Redistricting tools.  ·  DHC (Demographic and Housing Characteristics) — The 2020 replacement for SF1. Released ~2 years after Census Day. Contains detailed age, sex, race, Hispanic origin, and housing data. The general-purpose Decennial file for demographic research.  ·  SF1 (2010) — The 2010 equivalent of DHC. Useful when historical comparison to 2010 is required.