Finlayson’s post office opened in 1887, and 26% of its homes were built before 1940
Its Register listings are the John A. Oldenburg House and the Northern Pacific Depot. Its Register listings are the John A. Oldenburg House and the Northern Pacific Depot.
How Finlayson began
When was Finlayson founded?
The Finlayson post office opened in 1887, the earliest record of the town by name.
2 historic places in Finlayson
The country’s official list of buildings and places worth saving.
National Park Service, National Register of Historic Places. Photos from Wikimedia Commons, credited on each place’s page.
Places now gone and burying grounds
Finlayson’s post office has been open since 1887.
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
History across the town line
Each neighbor’s History grade, on the same three inputs.
Questions about Finlayson’s history
What year was Finlayson founded?
The Finlayson post office opened in 1887, the earliest record of the town by name (U.S. post office records).
What is on the National Register in Finlayson?
Two places: the John A. Oldenburg House (listed 1978) and the Northern Pacific Depot (1980).
Memory lane
What the archives can’t tell you, neighbors can.
Where this page comes from
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 National Register of Historic Places (2), 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.