Trego’s post office opened in 1911, and 2 of its places are on the National Register
Most of Trego was built recently: 6% of its homes predate 1940 and the median home dates from 1993. Its Register listings are the Ant Flat Ranger Station and the Fortin Ranch House. Below: maps from 1963 on.
The Fortin's are the most notable family in Trego's history, being the first homesteaders to the region. In 1894, Octave Fortin and his family settled on 160 acres of meadowland just east of where "Trego" would eventually stand. This homestead would eventually become to be known as the OF Ranch (what today is known as Blarney Ranch). Octave's brother, Phillip Fortin, also homesteaded in the region, about four miles north of Octave's claim (what today is known as the Dunlap Hay Ranch).
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), Wikipedia, U.S. Geological Survey historical maps, 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.
