Bar Nunn is a town in Natrona County, Wyoming, United States. It is a part of the Casper, Wyoming Metropolitan Statistical Area. The population was 2,213 at the 2010 census. It was incorporated in 1980.
The town was constructed around the runways of Wardwell Airport, Casper's original airport, which was later replaced by Casper–Natrona County International Airport.
Bar Nunn was founded in the 1970s by Romie Nunn, and named for him.
Bar Nunn is located at 42°54′48″N 106°20′49″W (42.913444, -106.347054).
According to the United States Census Bureau, the town has a total area of 2.10 square miles (5.44 km2), all of it land.
At the 2010 census there were 2,213 people, 748 households, and 605 families in the town. The population density was 1,053.8 inhabitants per square mile (406.9/km2). There were 761 housing units at an average density of 362.4 per square mile (139.9/km2). The racial makup of the town was 93.4% White, 0.8% African American, 0.8% Native American, 0.1% Asian, 2.6% from other races, and 2.3% from two or more races. Hispanic or Latino of any race were 7.2%.
Of the 748 households 49.1% had children under the age of 18 living with them, 65.1% were married couples living together, 9.0% had a female householder with no husband present, 6.8% had a male householder with no wife present, and 19.1% were non-families.