The first plat for the town of Parker was filed January 6, 1909. It was originally settled by William Parker in 1864, and was named for him by the Northern Pacific Railway in 1890.
Parker does not have any form of city government. Police service is delivered by the Yakima County Sheriffs department, and a local volunteer fire station is present. The U.S. Postal Service provides post office box delivery on weekdays and Saturday. The ZIP code for Parker, Washington is 98939. Currently, children attend Wapato public schools in the Wapato School District approximately four miles southeast of town.
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021). How TownRatings grades history →
From Wikipedia, U.S. Geological Survey historical maps, the US Post Offices dataset (Blevins & Helbock) and the USGS Geographic Names Information System. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.