Most of Arapaho was built recently: 5% of its homes predate 1940 and the median home dates from 1973. Below: maps from 1904 on and the census since 1900.
Lost half of its people between 1910 and 1950, then more than doubled.
13 censuses, 1900–2020.
U.S. Census Bureau decennial counts, from the census table on Arapaho’s Wikipedia page.
Every building
Arapaho, building by building, 1904–1916
Fire insurance maps drew every building, what it was made of and what it was used for, so insurers could price the risk of fire. Pick a year, then a sheet.
The area containing present Arapaho was surveyed by federally-contracted surveyors in 1891, prior to the Cheyenne-Arapaho land opening on April 19, 1892. A US post office was set up for the proposed community on March 23, 1892.
On April 19, 1892, the expected inrush of settlers did materialize; by sundown some 400 claims had been posted. The first town newspaper was issued 10 days later, titled The Arapahoe Arrow (by the end of the year its name had changed to The Arapahoe Bee).
Several Protestant church groups had been organized during the first few years. By 1894 the county courthouse and a school had been built. A lending library was in operation by May 1904.
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 Wikimedia Commons (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), the USGS Geographic Names Information System and Sanborn fire insurance maps (Library of Congress). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.