On its age, its old homes and the National Register, West Slope is more historic than 15% of U.S. towns, #108 of 142 in Oregon. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
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HistoryA character grade: shown, never part of West Slope’s overall grade.
Oregon towns list more on the Register than most of the country (a typical Oregon town has 2.9 per 10,000 residents, the U.S. 2.4), so West Slope’s 0.0 sits below most of its state (18% of Oregon 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 (±3.0 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 Slope’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Wikipedia doesn’t have a history of West Slope yet. The photos, dates and memories neighbors add here are how it gets written.
West Slope is an unincorporated suburb, neighborhood of Beaverton, Oregon, United States and a census-designated place. It is in Washington County, to the east of Cedar Hills, to the northwest of Raleigh Hills and south of U.S. Route 26. Fire protection and EMS services are provided through Tualatin Valley Fire and Rescue. As of the 2020 census, West Slope had a population of 7,223. In a plan agreed to by the county and Beaverton, West Slope was scheduled for annexation to Beaverton by 2010.
Between the 2010 and 2020 censuses its population grew from 6,554 to 7,223 (+10%).
Intro from Wikipedia. Population: U.S. Census Bureau.
West Slope is more historic than 15% of U.S. towns, #108 of 142 in Oregon. 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 Slope?
5% of West Slope’s homes were built before 1940 (Census estimate, ±3.0 points), against a typical 5.3% for an Oregon town; the median home was built in 1962.
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 Wikimedia Commons (1) and U.S. Geological Survey historical maps. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.
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