Mills is a town in Natrona County, Wyoming, United States. It is part of the Casper, Wyoming Metropolitan Statistical Area. The population was 3,461 at the 2010 census.
Mills is located at 42°50′49″N 106°22′43″W (42.846815, -106.378658).
According to the United States Census Bureau, the town has a total area of 2.18 square miles (5.65 km2), of which 2.15 square miles (5.57 km2) is land and 0.03 square miles (0.08 km2) is water.
As of the census of 2010, there were 3,461 people, 1,513 households, and 894 families residing in the town. The population density was 1,609.8 inhabitants per square mile (621.5/km2). There were 1,654 housing units at an average density of 769.3 per square mile (297.0/km2). The racial makeup of the town was 94.0% White, 0.4% African American, 1.5% Native American, 0.2% Asian, 1.9% from other races, and 2.1% from two or more races. Hispanic or Latino of any race were 6.5% of the population.
There were 1,513 households, of which 30.1% had children under the age of 18 living with them, 35.2% were married couples living together, 15.5% had a female householder with no husband present, 8.4% had a male householder with no wife present, and 40.9% were non-families. 31.7% of all households were made up of individuals, and 9.8% had someone living alone who was 65 years of age or older.