More historic than 60% of U.S. towns · #36 of 142 in Oregon. What drives it
Its Register listings are the John F. and John H. Broetje House, the Marshall Dana House and the Lawrence D. Bailey House. Its Register listings are the John F. and John H. Broetje House, the Marshall Dana House and the Lawrence D. Bailey House. Below: maps from 1914 on.
On its age, its old homes and the National Register, Oak Grove is more historic than 60% of U.S. towns, #36 of 142 in Oregon. All 2 inputs are above most U.S. towns; its National Register listings ranks highest and its share of homes from before 1940 lowest.
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HistoryA character grade: shown, never part of Oak Grove’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 Oak Grove’s 3.0 sits near the middle of its state (49% of Oregon towns have fewer) while its 5 historic buildings outnumber those of 70% 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 Oak Grove’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Oak Grove was named at the suggestion of Edward W. Cornell, a member of the surveying party that platted the townsite in the 1890s. The company that was developing the property had not been able to come up with a good name for the place, and Cornell suggested "Oak Grove" after a crew ate lunch in a stand of oak trees in the northwestern part of the tract.
Oak Grove is more historic than 60% of U.S. towns, #36 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.
What is on the National Register in Oak Grove?
Three places: the John F. and John H. Broetje House (listed 1987), the Marshall Dana House (1992) and the Lawrence D. Bailey House (1990).
How old are the homes in Oak Grove?
12% of Oak Grove’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 1969.
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 (2), the National Register of Historic Places (3), Wikipedia, U.S. Geological Survey historical maps 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.