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Census Blocks in 2020

Published by City of Washington, DC | District of Columbia | Metadata Last Checked: January 27, 2026 | Last Modified: 2025-04-28T19:11:55.000Z
Census blocks are statistical areas bounded on all sides by visible features (e.g., streets, roads, streams, and railroad tracks), and by non-visible boundaries (e.g., city, town, township, county limits, and short line-of-sight extensions of streets and roads). Generally, census blocks are small in area (e.g., a block in a city). Census blocks in suburban and rural areas may be large, irregular, and bounded by a variety of features (e.g., roads, streams, and/or transmission line rights-of-way). In remote areas, census blocks may encompass hundreds of square miles. Census blocks cover all territory in the United States, Puerto Rico, and the Island areas. Blocks do not cross the boundaries of any entity for which the Census Bureau tabulates data.Census Block Numbers—Census blocks are numbered uniquely within the boundaries of each state, county, census tract with a 4-character census block number. The first character of the tabulation block number identifies the block group. A block number can only be unique by using the decennial census state (STATEFP<YR>), county (COUNTYFP<YR>), census tract (TRACTCE<YR>), and block (BLOCKCE<YR>)+. There is no consistency in block numbers from census to census.

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1-Percent Public Use Microdata Area Code 106th congressional district Code 108th congressional district Code 11001 3 digit ZIP Code Tabulation Area Code 5 digit ZIP Code Tabulation Area Code 5-Percent Public Use Microdata Area Code Alaska Native Regional Corporation FIPS code

Complete Metadata
@type dcat:Dataset
accessLevel public
contactPoint 
                                            {
  "fn": "DCGISopendata",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:gisgroup@dc.gov"
}
description <div style='text-align:Left;'><div><div><p><span>Census blocks are statistical areas bounded on all sides by visible features (e.g., streets, roads, streams, and railroad tracks), and by non-visible boundaries (e.g., city, town, township, county limits, and short line-of-sight extensions of streets and roads). Generally, census blocks are small in area (e.g., a block in a city). Census blocks in suburban and rural areas may be large, irregular, and bounded by a variety of features (e.g., roads, streams, and/or transmission line rights-of-way). In remote areas, census blocks may encompass hundreds of square miles. Census blocks cover all territory in the United States, Puerto Rico, and the Island areas. Blocks do not cross the boundaries of any entity for which the Census Bureau tabulates data.</span></p><p><span>Census Block Numbers—Census blocks are numbered uniquely within the boundaries of each state, county, census tract with a 4-character census block number. The first character of the tabulation block number identifies the block group. A block number can only be unique by using the decennial census state (STATEFP&lt;YR&gt;), county (COUNTYFP&lt;YR&gt;), census tract (TRACTCE&lt;YR&gt;), and block (BLOCKCE&lt;YR&gt;)+. There is no consistency in block numbers from census to census.</span></p></div></div></div>
distribution 
                                            [
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identifier https://www.arcgis.com/home/item.html?id=a6f76663621548e1a039798784b64f10&sublayer=0
issued 2015-02-27T20:47:47.000Z
keyword 
                                            [
  "1-Percent Public Use Microdata Area Code",
  "106th congressional district Code",
  "108th congressional district Code",
  "11001",
  "3 digit ZIP Code Tabulation Area Code",
  "5 digit ZIP Code Tabulation Area Code",
  "5-Percent Public Use Microdata Area Code",
  "Alaska Native Regional Corporation FIPS code",
  "American Indian/Alaska Native/Native Hawaiian Areas Census Code",
  "Block Group",
  "Census Tract Number",
  "Consolidated City FIPS Code",
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  "County or Equivalent Entity",
  "County or equivalent entity",
  "DC GIS",
  "Demographic",
  "District of Columbia",
  "Elementary School District Local Education Agency Code",
  "FIPS 55 Place Code For All Places",
  "Land/water Flag",
  "Legislative Session Year",
  "Metropolitan Statistical Area/Consolidated Metropolitan Statistical Area FIPS Code",
  "New England County Metropolitan Area FIPS Code",
  "Number",
  "Open Data",
  "People",
  "Primary Metropolitan Statistical Area FIPS Code",
  "Rreservation or Off-reservation Trust Land Indicator",
  "Secondary School District Local Education Agency Code",
  "State FIPS Code",
  "State Legislative District Lower Chamber Code",
  "State Legislative District Upper Chamber Code",
  "Sub-minor Civil Division FIPS Code in Puerto Rico",
  "Table",
  "Tabulation Block Number",
  "Topological Faces",
  "Traffic Analysis Zone Code",
  "Tribal Subdivision Code",
  "U.S.",
  "Unified School District Local Education Agency Code",
  "United States",
  "Urban Area Code",
  "Urban Growth Area Code",
  "Voting District Code",
  "Washington DC",
  "age",
  "boundaries",
  "census blocks",
  "census2020",
  "demographics",
  "housing units",
  "population",
  "race"
]
landingPage https://opendata.dc.gov/datasets/DCGIS::census-blocks-in-2020
license https://creativecommons.org/licenses/by/4.0
modified 2025-04-28T19:11:55.000Z
publisher 
                                            {
  "name": "City of Washington, DC"
}
spatial -77.1199,38.7916,-76.9093,38.9959
theme 
                                            [
  "geospatial"
]
title Census Blocks in 2020

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