Urbanized Areas, California, 1990

Author(s)

California. Metropolitan Transportation Commission

Description

This polygon shapefile contains the urbanized areas of California. These data were derived from the TIGER/2000 Urbanized Areas (UA) dataset of the 1990 Census. The Census Bureau defines UAs as an area consisting of a central place(s) and adjacent urban fringe that together have a minimum residential population of at least 50,000 people and generally an overall population density of at least 1,000 people per square mile of land area. The Census Bureau uses published criteria to determine the qualification and boundaries of UAs.The U.S. Census Bureau classifies as urban all territory, population, and housing units located within urbanized areas (UAs). It delineates UA boundaries to encompass densely settled territory, which generally consists of: A cluster of one or more block groups or census blocks each of which has a population density of at least 1,000 people per square mile at the time and, Surrounding block groups and census blocks each of which has a population density of at least 500 people per square mile at the time and, Less densely settled blocks that form enclaves or indentations, or are used to connect discontiguous areas with qualifying densities. This layer is part of the Bay Area Metropolitan Transportation Commission (MTC) GIS Maps and Data collection. This dataset is intended for researchers, students, and policy makers for reference and mapping purposes, and may be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analysis with other spatial data. California. Metropolitan Transportation Commission. (2002). Urbanized Areas, California, 1990. California. MTC. Available at: http://purl.stanford.edu/gfj777tw5682. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.

Publisher

California. Metropolitan Transportation Commission

Collection

Metropolitan Transportation Commission GIS Maps & Data

Place(s)

California

Subject(s)

Metropolitan areas and Boundaries

Year

1990

Held by

Stanford

More details at

https://purl.stanford.edu/fj777tw5682

Use and reproduction

This item is in the public domain. There are no restrictions on use.

Copyright

This work is in the Public Domain, meaning that it is not subject to copyright.