Other pages about the topic: City data
Per RCW 35.13.260 and RCW 35A.14.700, jurisdictions must send annexation paperwork to the Office of Financial Management (OFM) within 30 days of the annexation effective date. OFM approval is necessary for a city to qualify for revenues related to population.
This annexation tracking site provides 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.