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

Additional Info

Field Value
Maintainer John Edwards
Last Updated July 31, 2019, 01:29 (CDT)
Created July 31, 2019, 01:29 (CDT)
Identifier http://data-seattlecitygis.opendata.arcgis.com/datasets/d38095e6284c40cf88f3d2106b1d0ddd_7
Issued 2012-07-02
Modified 2019-04-15
accessLevel public
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license https://hub.arcgis.com/api/v2/datasets/d38095e6284c40cf88f3d2106b1d0ddd_7/license
metadata_type geospatial
publisher City of Seattle GIS Program
resource-type Dataset
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spatial -122.438,47.4955,-122.2361,47.7341