Other pages about the topic: Population estimates

Washington tops 7.6 million residents in 2020

An estimated 7,656,200 people resided in Washington state as of April 1, according to annual estimates prepared by the Office of Financial Management. The COVID-19 crisis did not have a discernible impact on the 2020 estimates because most population change occurred before the crisis began. Strong population growth continued in Washington, with the state adding 109,800 people over the last year, a 1.5% increase. Migration continues to be the primary driver behind Washington’s population growth.

Special subject estimates

Estimate of population with limited English proficiency (LEP) for the state and counties

At the request of a cross-agency working group headed by the Governor's Interagency Council on Health Disparities, OFM has produced these estimates at both the state and county level.

Special area population estimates

OFM produces annual population estimates for ‘special areas’ required by statue.  Special areas include highway urban areas, public transportation benefit areas, and the thermal electric generating facility area.  The special area estimates are based on data produced by the Small Area Estimate Program using GIS-based spatial interpolation procedures.

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.