Most of Cowiche was built recently: 0.0% of its homes predate 1940 and the median home dates from 1968. Below: 1 old photo or paper and maps from 1899 on.
The first inhabitants of the area were the Tkai'waichash-hlama, a band or tribe of Native American people who lived along Cowiche Creek. The area was settled in the late nineteenth century by farmers who relied upon crops that did not require irrigation, such as wheat, barley, rye, and grazing cattle. Homesteading in Cowiche was difficult since fields had to be cleared of volcanic rock before they could be tilled and there was little rainfall in summer. In 1906, construction began on the Tieton Irrigation Project, a division of the broader Yakima Project. Irrigation water became available in 1907, and shortly thereafter, orchards began to replace wheatfields.
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 the Library of Congress (1), 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.
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