Oak Harbor’s post office opened in 1861, and 1 of its places is on the National Register
More historic than 27% of U.S. towns · #146 of 285 in Washington. What drives it
Its Register listing is the Benjamin Loers House. Most of Oak Harbor was built recently: 1% of its homes predate 1940 and the median home dates from 1990. Below: 12 old photos and papers, maps from 1943 on, and the census since 1920.
Founding year: the first Oak Harbor post office (Blevins & Helbock, CC0). Wikidata: 1915.The full story ↓
History grade
What drives Oak Harbor’s History grade
On its age, its old homes and the National Register, Oak Harbor is more historic than 27% of U.S. towns, #146 of 285 in Washington. Its National Register listings hold the grade up; its share of homes from before 1940 pulls it down.
C
HistoryA character grade: shown, never part of Oak Harbor’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 Oak Harbor’s 0.4 sits near the middle of its state (57% of Washington towns have fewer) while its 1 listings outnumber those of 51% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from C− to C+. The pre-1940 share (±0.9 points) is firm at this size. The founding year is the first post office, not a stated founding date; Wikidata gives 1915.
Founding year: the first post office (other dates in Quick answers). 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 Harbor’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Nothing in the archives for these yearsWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
The Lower Skagit people have inhabited Oak Harbor (Lushootseed: təqucid) and the nearby Crescent Harbor (Lushootseed: č̓itusəb) since time immemorial. There were several villages in the vicinity, and the modern settlement of Oak Harbor was built over one such village.
The Oak Harbor post office opened in 1861, the earliest record of the town by name (U.S. post office records). Wikidata gives 1915.
How does Oak Harbor rank for history?
Oak Harbor is more historic than 27% of U.S. towns, #146 of 285 in Washington. 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 Harbor?
One place: the Benjamin Loers House (listed 1977).
How old are the homes in Oak Harbor?
1% of Oak Harbor’s homes were built before 1940 (Census estimate), 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 Wikimedia Commons (17), Wikidata (1), the National Register of Historic Places (1), Wikipedia, Wikidata and Wikipedia for famous people, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), 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.