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Areas Published

American Community Survey (ACS) data are tabulated for a variety of different geographic areas ranging in size from broad geographic regions to cities, towns, county subdivisions, and block groups. View the chart below outlining the number of areas receiving data by geographic level. Note that 5-year estimates are available for all areas.

The chart below includes only selected summary levels, therefore not all geographic areas are represented below. To view the complete list of geographic areas published for ACS 1-year and 5-year estimates, as well as detailed lists for 1-year and 1-year Supplemental Estimates, visit the Reference Materials page.

Many factors other than population size also affect whether ACS data are published. Visit the Data Suppression page for more details and to learn how population thresholds are applied.

Selected Geographic Areas Published in the 2021 American Community Survey 1-Year Estimates, 1-Year Supplemental Estimates, and 5-Year Estimates

Geographic Areas 1-year estimates 1-year Supplemental Estimates 5-year estimates
  Areas with a
Population of 65,000+*
Areas with a
Population of 20,000+*
All areas**
  number percentage number percentage number
United States 1 100% 1 100% 1
Region 4 100% 4 100% 4
Division 9 100% 9 100% 9
States, the District of Columbia, and Puerto Rico 52 100% 52 100% 52
County or equivalent1 841 26% 1,905 59% 3,221
County Subdivision2 231 1% 1,208 3% 36,567
Subminor Civil Division (Puerto Rico Only)3 N/A
N/A
N/A N/A 145
Census Tract3 N/A
N/A
N/A N/A 85,395
Block Group3 N/A
N/A
N/A N/A 242,335
Place (incorporated places and census designated places) 634 2% 2,385 7% 31,908
Consolidated City3 N/A
N/A
N/A N/A 8
Alaska Native Regional Corporation 3 25% 4 33% 12
American Indian Area/Alaska Native Area/Hawaiian Home Land 12 2% 34 5% 704
Specified American Indian Area-Tribal Census Tract3 N/A N/A N/A N/A 492
Specified American Indian Area-Tribal Census Tract-Tribal Block Group3 N/A N/A N/A N/A 934
Metropolitan Statistical/Micropolitan Statistical Area4 513 55% 909 97% 939
Principal City of Metropolitan or Micropolitan Statistical Areas 403 32% 790 62% 1,267
Metropolitan Division 31 100% 31 100% 31
Combined Statistical Area 171 98% 175 100% 175
Combined New England City and Town Area 7 100% 7 100% 7
New England City and Town Area 25 63% 38 95% 40
Principal Cities of New England City and Town Areas 19 33% 40 69% 58
New England City and Town Area Division 11 100% 11 100% 11
Urban Area 429 12% 900 25% 3,592
Congressional Districts - 116th 435 100% 435 100% 435
Delegate District - 116th (at Large, District of Columbia) 1 100% 1 100% 1
Resident Commissioner District - 116th (at Large, Puerto Rico) 1 100% 1 100% 1
State Legislative District3, 5 (Upper) N/A
N/A N/A N/A 1,961
State Legislative District3, 5 (Lower) N/A N/A N/A N/A 4,833
Public Use Microdata Area 2,378 100% 2,378 100% 2,378
5 digit ZIP Code Tabulation Area3 N/A N/A N/A N/A 33,774
School District (Elementary) 79 4% 301 15% 1,969
School District (Secondary) 92 19% 211 43% 489
School District (Unified) 888 8% 3,037 28% 10,889
Total 7,270 2% 14,867 3%
464,637

 

1County equivalents include Alaska boroughs, municipalities, city and boroughs, and census areas; the District of Columbia; Louisiana parishes; Puerto Rico municipios; independent cities in Maryland, Missouri, Nevada, and Virginia.

2 For 1-year estimates, qualifying Minor Civil Divisions in 20 states only. For 5-year estimates, all county subdivisions.

3 1-year estimates are not produced for this geographic level, regardless of population size.

4 All metropolitan statistical areas receive ACS 1-year estimates. A population minimum of 50,000 is applied instead of the standard 65,000.

5 Legislative session year 2018.

* Counts based on geographic area boundaries as of January 1, 2021.

* * The Census Bureau does not publish ACS data for blocks.

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