Census Tracts 1990

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/datasets/SeattleCityGIS::census-tracts-1990
issued 2012-07-02
landingPage https://data-seattlecitygis.opendata.arcgis.com/datasets/SeattleCityGIS::census-tracts-1990
license http://opendatacommons.org/licenses/pddl/summary
metadata_type geospatial
modified 2019-04-15
old-spatial -122.4328,47.4933,-122.2422,47.7357
publisher City of Seattle GIS Program
resource-type Dataset
source_datajson_identifier true
source_hash 10eea3fec9b1883dbfa4efb71febd09fede824ac
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-122.4328, 47.4933], [-122.4328, 47.7357], [-122.2422, 47.7357], [-122.2422, 47.4933], [-122.4328, 47.4933]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • 1990
  • amerigeo
  • amerigeoss
  • boundaries
  • census
  • ckan
  • cosgis
  • geo
  • geoss
  • gis
  • national
  • north-america
  • planning
  • seattle
  • seattlecitygis
  • tract
  • united-states
  • wa
  • wmcensustract90
isopen False
license_id other-license-specified
license_title other-license-specified
maintainer site.admin_SeattleCityGIS
maintainer_email mapgis.mapgis@seattle.gov
metadata_created 2025-11-22T11:52:26.919540
metadata_modified 2025-11-22T11:52:26.919545
notes <div>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. </div>
num_resources 6
num_tags 19
title Census Tracts 1990