Circle’s post office opened in 1896
Most of Circle was built recently: 0.0% of its homes predate 1940 and the median home dates from 1996.
How Circle began, and where its name came from
When was Circle founded?
The Circle post office opened in 1896, the earliest record of the town by name.
How did Circle get its name?
Circle was named by miners in the late 19th century who believed that the town was on the Arctic Circle, but the Arctic Circle is about 50 mi (80 km) north of Circle.
Questions about Circle’s history
What year was Circle founded?
The Circle post office opened in 1896, the earliest record of the town by name (U.S. post office records).
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 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.