WAOFM - April 1 - Population by State, County and City, 1990 to Present

Intercensal and postcensal population estimates for the state, counties and cities, 1990 to present.

Data and Resources

Additional Info

Field Value
Source https://data.wa.gov/resource/2hia-rqet
Author Erica Gardner
Last Updated July 22, 2025, 20:21 (UTC)
Created July 22, 2025, 20:21 (UTC)
1. Intercensal estimates are considered more accurate than postcensal estimates because they are bracketed on both sides by decennial or state-certified special census counts.
2. The intercensal estimates were developed using the housing unit method.
3. This table contains multiple geographies. Use the Sequence variable to return the table to its original order (sort ascending). Use the Filter variable to filter the data by geography.
4. By using these data the user agrees that the Washington State Office of Financial Management shall not be liable for any activity involving these data with regard to lost profits or savings or any other consequential damages; or the fitness for use of the data for a particular purpose; or the installation of the data, its use, or the results obtained.
5. The 2021 estimates in this table were revised November 30, 2021 after the 2020 Census P.L. 94-171 became available. These 2021 estimates supersede the estimates OFM released on June 30, 2021.
Category demographics
Period of Time 1990 to Present
Posting Frequency Annually
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harvest_source_title washington-state