More historic than 5% of U.S. towns · #26 of 28 in Wyoming. What drives it
Most of Bar Nunn was built recently: 0.8% of its homes predate 1940 and the median home dates from 2004. Below: maps from 1951 on and the census since 1990.
On its age, its old homes and the National Register, Bar Nunn is more historic than 5% of U.S. towns, #26 of 28 in Wyoming. Its National Register listings hold the grade up; its share of homes from before 1940 pulls it down.
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HistoryA character grade: shown, never part of Bar Nunn’s overall grade.
Wyoming towns list more on the Register than most of the country (a typical Wyoming town has 25.1 per 10,000 residents, the U.S. 2.4), so Bar Nunn’s 0.0 sits below most of its state (16% of Wyoming towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
NoteThe founding year comes from Wikipedia alone; no second source gives 1903.
How sure. Graded on two of the three inputs, so a change in either one moves the letter more than it would with three. The pre-1940 share (±1.5 points) is firm at this size.
Founding year: Wikipedia (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 →
What stands out about Bar Nunn’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Bar Nunn was founded in the 1970s by Romie Nunn (1903–1988), and named for him.
The town of Bar Nunn was originally the site of Wardwell Field, which served as Natrona County's regional airport until 1952. That year, the newly formed United States Air Force abandoned the Casper Army Airfield located a few miles to the west. Local government assumed control of that airport and relocated regional aircraft operations creating the Casper-Natrona County International Airport.
In 1903, according to Wikipedia’s history of the town. the census of 1990 counted 835 people here.
How does Bar Nunn rank for history?
Bar Nunn is more historic than 5% of U.S. towns, #26 of 28 in Wyoming. 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.
How old are the homes in Bar Nunn?
0.8% of Bar Nunn’s homes were built before 1940 (Census estimate, ±1.5 points), against a typical 12% for a Wyoming town; the median home was built in 2004.
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 Wikipedia, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia) 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.
