Other pages about the topic: Forecasting & Research
Source: U.S. Census Bureau, Census 2000 Summary File 1 and 2010 Census Advance Group Quarters Summary File Data.
Important: If you are conducting a census at this time, please contact OFM at firstname.lastname@example.org or 360-902-0599 for special COVID-19 census guidance.
Per RCW 35.13.260 and RCW 35A.14.700, jurisdictions must send annexation paperwork to the Office of Financial Management within 30 days of the annexation effective date. OFM approval is necessary for a city to qualify for revenues related to population.
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.
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.
RCW 43.62.030 states that the Office of Financial Management 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.
The American Community Survey (ACS) is an ongoing survey of the nation's population that provides detailed demographic, housing, social, and economic data—data that used to be collected via the decennial census long form.
Click on a tab below to access various 2010 Census data products.