Other pages about the topic: Population

Population changes

State economic, demographic, and social trends are related to one another and, in turn, affect government policies on spending and taxation. A strong economy, for example, attracts more people to the state, which in turn boosts state tax collections. At the same time, however, increases in population also put additional pressure on such areas of state responsibility as public schools, prisons, and social services. Social developments, such as crime rates and the incidence of teenage pregnancies, also contribute to demands on public resources.

Growth Management Act county projections

Population change

In accordance with RCW 43.62.035, the Office of Financial Management (OFM) shall determine the percentage increase in population for each county over the preceding ten-year period, as of April 1.

Contacts for population & demographics

Office of Financial Management
Forecasting and Research Division
P.O. Box 43124
Olympia, WA 98504-3124
360-902-0599 -- Main Reception
360-586-1988 -- Fax

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.

Small area estimates program

Small Area Estimates Program (SAEP) estimates are meant to provide a consistent set of small area population and housing data for statewide applications. SAEP estimates are generated for census areas and other areas of statewide significance.