Census Block Groups 2010

Block Groups (BGs) are statistical divisions of census tracts, are generally defined to contain between 600 and 3,000 people, and are used to present data and control block numbering. A block group consists of clusters of blocks within the same census tract that have the same first digit of their four-digit census block number. For example, blocks 3001, 3002, 3003, . . ., 3999 in census tract 1210.02 belong to BG 3 in that census tract. Most BGs were delineated by local participants in the Census Bureau's Participant Statistical Areas Program. The Census Bureau delineated BGs only where a local or tribal government declined to participate, and a regional organization or State Data Center was not available to participate.

Data and Resources

Field Value
accessLevel public
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://data.seattle.gov/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier https://data-seattlecitygis.opendata.arcgis.com/maps/SeattleCityGIS::census-block-groups-2010
issued 2018-11-08
landingPage https://data-seattlecitygis.opendata.arcgis.com/maps/SeattleCityGIS::census-block-groups-2010
metadata_type geospatial
modified 2022-03-23
old-spatial -122.4537,47.4811,-122.2281,47.7359
publisher City of Seattle GIS Program
resource-type Dataset
source_datajson_identifier true
source_hash 7e8c95d0b592caf4699a38f9f16f84b8e7a9e916
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-122.4537, 47.4811], [-122.4537, 47.7359], [-122.2281, 47.7359], [-122.2281, 47.4811], [-122.4537, 47.4811]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • 2010
  • amerigeo
  • amerigeoss
  • boundaries
  • census
  • census-block-groups
  • ckan
  • demographics
  • geo
  • geoss
  • gis
  • national
  • north-america
  • planning
  • united-states
  • us-census
isopen False
license_id notspecified
license_title License not specified
maintainer site.admin_SeattleCityGIS
maintainer_email mapgis.mapgis@seattle.gov
metadata_created 2025-11-20T08:28:19.024985
metadata_modified 2025-11-20T08:28:19.024989
notes Block Groups (BGs) are statistical divisions of census tracts, are generally defined to contain between 600 and 3,000 people, and are used to present data and control block numbering. A block group consists of clusters of blocks within the same census tract that have the same first digit of their four-digit census block number. For example, blocks 3001, 3002, 3003, . . ., 3999 in census tract 1210.02 belong to BG 3 in that census tract. Most BGs were delineated by local participants in the Census Bureau's Participant Statistical Areas Program. The Census Bureau delineated BGs only where a local or tribal government declined to participate, and a regional organization or State Data Center was not available to participate.
num_resources 6
num_tags 16
title Census Block Groups 2010