Each edition grades its towns against each other only.
More historic than 14% of U.S. towns. What drives it
Most of Carlsborg was built recently: 7% of its homes predate 1940 and the median home dates from 1991.
The Carlsborg post office opened in 1917, the earliest record of the town by name.
More historic than 14% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Carlsborg is more historic than 14% of U.S. towns. Its share of homes from before 1940 holds the grade up; its age pulls it down.
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 Carlsborg’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.
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 →
Read from the archive, the National Register and the record. The page puts what stands out first.
The first neighbors to add old photos shape how Carlsborg’s history is told.
From Wikipedia’s history of Carlsborg.
Carlsborg was founded in 1915 by C.J. Erickson, and named after his hometown in Sweden. Its sawmill discontinued operations in 1968.
Text from Wikipedia, licensed CC BY-SA 4.0.
Nobody well known was born in Carlsborg itself, so here are the best known from just nearby.
Carlsborg’s post office has been open since 1917.
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
The Carlsborg post office opened in 1917, the earliest record of the town by name (U.S. post office records).
Carlsborg is more historic than 14% 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.
7% of Carlsborg’s homes were built before 1940 (Census estimate, ±8.1 points), against a typical 4.3% for a Washington town; the median home was built in 1991.
What the archives can’t tell you, neighbors can.
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), 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.
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