Growth Management Act county projections
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.
- Growth Management Act Population Change Excel
Development of population projections for the Growth Management Act (GMA) is a shared responsibility. As directed by state statute, OFM prepares a reasonable range of possible population growth for Washington counties participating in GMA. County officials, also by law, are responsible for selecting a 20-year GMA planning target from within the range of high and low prepared by OFM. County officials select the county planning target; then within each county, population planning targets for cities, towns, and unincorporated areas are developed among all affected local jurisdictions as part of the city and county planning process.
OFM's role is limited to providing the range of projected county populations noted above. OFM does not maintain record of the specific planning targets chosen by each county nor does OFM develop sub-county population projects used by local jurisdictions for GMA planning. If you are interested in these data you can contact individual county planning agencies or the Local Government Division of the Department of Commerce at 360-725-3000.
For questions regarding OFM's 2017 GMA population projections, please contact Mike Mohrman at 360-902-0602.
Washington State Growth Management Act population projections for counties (five year update cycle):