Other pages about the topic: Population

Census geographic files

Click on a tab below to access geographic data. Some of the data files are large and may require additional time to download.

State Data Center program

The State Data Center (SDC) program is a cooperative program between the states and the Census Bureau created in 1978 to make data available locally to the public through a network of state agencies, universities, libraries, and regional and local governments. The Business and Industry Data Center (BIDC) program was added in 1988 to meet the needs of local business communities for economic data. The Office of Financial Management is the state agency responsible for administering these programs in Washington State.

Population density

Population density is the average number of people per unit of land area. In the U.S., the most common unit of population density is persons per square mile. The land area measurement excludes lakes and other water areas within.

2012 GMA projection background materials

Included here are documents describing the process of GMA projections.

GIS data

Small area estimates program: GIS shapefiles for select census geographic areas and other areas of statewide significance. Includes annual population and housing estimates from 2010 onwards.

City and town (2010 Census detailed demographic profiles)

All race/ethnic groups that meet the minimum population threshold of 100 persons are included in each demographic profile.

An asterisk (*) denotes that the area does not meet the minimum population threshold of 100 persons for any single race/ethnic group.

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