Other pages about the topic: Forecasting & Research

Central Annexation Tracking System - 2023

The purpose of this site is to provide a convenient location where federal and state agencies, local governments, organizations, and members of the public can obtain information about annexations. State agencies that use this site include WSDOT Geographic Services, DOR Tax Payer Account Administration, and DOR Property Tax Division.

Posting on this website does not replace reporting to DOR by counties and cities. RCW requirements are still in effect.

Growth Management Act population projections for counties: 2020 to 2050

2022 projections

State population steadily increases, tops 7.7 million residents in 2021

Washington’s population growth steadily increased by 61,600 people in 2021, launching the state into one of the most unique population estimate years because of delayed census data and COVID-19 impacts. As of April 1, 2021, Washington now tops 7,766,925 residents, with most of the growth concentrated in larger cities across the state.

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