On its age, its old homes and the National Register, West Pasco is more historic than 33% of U.S. towns. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
C
HistoryA character grade: shown, never part of West Pasco’s overall grade.
Few Washington towns list much on the Register (a typical Washington town has 0.1 per 10,000 residents, the U.S. 2.4), so West Pasco’s 0.0 sits below most of its state (27% of Washington towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
How sure. Graded on two of the three inputs, so a change in either one moves the letter more than it would with three. The pre-1940 share is a Census survey estimate (±18.1 points).
Founding year: our sources. Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →
What stands out about West Pasco’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
The area now known as West Pasco was originally inhabited by Native American tribes, including the Yakama, Walla Walla, and Umatilla peoples. These tribes relied on the Columbia River for fishing, trade, and transportation, developing complex societies with cultural and traditions centered around the river. European exploration in the region began in the early 19th century, with the Lewis and Clark Expedition passing through in 1805. This marked the beginning of increased interaction between Native American tribes and European settlers. By the mid-19th century, the establishment of Fort Walla Walla and subsequent agricultural development led to more permanent settlements in the area.
West Pasco is more historic than 33% of U.S. towns. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.
How old are the homes in West Pasco?
12% of West Pasco’s homes were built before 1940 (Census estimate, ±18.1 points), against a typical 4.3% for a Washington town; the median home was built in 1990.
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).
From Wikipedia, U.S. Geological Survey historical maps and U.S. Census counts (via Wikipedia). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.
