Other pages about the topic: Population

April 1 official population estimates

RCW 43.62.030 states that the Office of Financial Management (OFM) shall annually determine the April 1 populations of all cities and towns of the state.  OFM population estimates for cities and towns are used in state program administration and in the allocation of selected state revenues (RCW 43.62.020).  Population estimates for counties are used to allocate revenues as specified in RCW 36.13.100 and RCW 43.62.030.

Historical estimates of April 1 population and housing for the state, counties, and cities

Intercensal estimates

Intercensal estimates are estimates that are bracketed on both sides by decennial census or state-certified special census counts. As such, they yield a more consistent series than postcensal estimates which only reference the prior census point.

Estimates of April 1 population by age, sex, race and Hispanic origin

Preliminary county data

The Census Bureau has not released all of the data that OFM needs to fully update the Small Area Demographic Estimates (SADE) and related products. OFM used the 2020 Census data released so far to provide preliminary county-level data updates.

Census 2010 data

Click on a tab below to access various 2010 Census data products.


2010 Census 2-page demographic profiles

These 2-page demographic profiles are based on the 2010 Census Demographic Profile Summary File product. These general profiles show data for age, sex, race, Hispanic or Latino origin, household relationship, household type, group quarters population, housing occupancy, and housing tenure.

Click on one of the links below to find a 2-page demographic profile for your area of interest.

Census 2000 Summary File 3 data file descriptions

Population and housing characteristics

This table is a compilation of data from several Summary File 3 tables. Items include Group Quarters Population, Housing Unit Population by Tenure and Structure Type, Average Household Size by Tenure, Housing Unit Occupancy Status, and Occupied Housing Units by Tenure and Structure Type. Each component of this data table is described separately below.

Census 2000 Summary File 3 data tables

Profiles from the 2000 federal census are available for the counties of Washington. Derived from Summary File 1, these tables contain information based on the April 1, 2000, 100 percent count of population.

Census 2000 detailed demographic profiles

These Detailed Demographic Profiles are based exclusively on Census 2000 Summary File 3 (SF3) data, which consists of 813 detailed tables of Census 2000 social, economic and housing characteristics compiled from a sample of approximately 19 million housing units (about 1 in 6 households) that received the Census 2000 long-form questionnaire.

County and place profiles organized by county