Census Tracts 1970

Census Tracts are small, relatively permanent statistical subdivisions of a county or equivalent entity that are updated by local participants prior to each decennial census as part of the Census Bureau's Participant Statistical Areas Program. The Census Bureau delineates census tracts in situations where no local participant existed or where state, local, or tribal governments declined to participate. The primary purpose of census tracts is to provide a stable set of geographic units for the presentation of statistical data.

Census tracts generally have a population size between 1,200 and 8,000 people, with an optimum size of 4,000 people. A census tract usually covers a contiguous area; however, the spatial size of census tracts varies widely depending on the density of settlement. Census tract boundaries are delineated with the intention of being maintained over a long time so that statistical comparisons can be made from census to census. Census tracts occasionally are split due to population growth or merged as a result of substantial population decline.

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-tracts-1970
issued 2018-11-08
landingPage https://data-seattlecitygis.opendata.arcgis.com/maps/SeattleCityGIS::census-tracts-1970
metadata_type geospatial
modified 2022-03-23
old-spatial -122.4308,47.4933,-122.2421,47.7359
publisher City of Seattle GIS Program
resource-type Dataset
source_datajson_identifier true
source_hash 5894406cb4c4bc36b9235d7f7638a2a9e0d0eb02
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-122.4308, 47.4933], [-122.4308, 47.7359], [-122.2421, 47.7359], [-122.2421, 47.4933], [-122.4308, 47.4933]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • 1970
  • amerigeo
  • amerigeoss
  • boundaries
  • census
  • city-of-seattle
  • ckan
  • demographics
  • geo
  • geoss
  • national
  • north-america
  • planning
  • seattle
  • 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 2025-11-19T14:58:27.671994
metadata_modified 2025-11-19T14:58:27.671999
notes Census Tracts are small, relatively permanent statistical subdivisions of a county or equivalent entity that are updated by local participants prior to each decennial census as part of the Census Bureau's Participant Statistical Areas Program. The Census Bureau delineates census tracts in situations where no local participant existed or where state, local, or tribal governments declined to participate. The primary purpose of census tracts is to provide a stable set of geographic units for the presentation of statistical data. Census tracts generally have a population size between 1,200 and 8,000 people, with an optimum size of 4,000 people. A census tract usually covers a contiguous area; however, the spatial size of census tracts varies widely depending on the density of settlement. Census tract boundaries are delineated with the intention of being maintained over a long time so that statistical comparisons can be made from census to census. Census tracts occasionally are split due to population growth or merged as a result of substantial population decline.
num_resources 6
num_tags 16
title Census Tracts 1970