Dillon is a city in and the county seat of Beaverhead County, Montana, United States. The population was 4,134 at the 2010 census. The city was named for Union Pacific Railroad President Sidney Dillon.
Dillon is located at 45°12′57″N 112°38′3″W / 45.21583°N 112.63417°W / 45.21583; -112.63417 (45.215735, -112.634055), approximately 40 miles (64 km) east of the Continental Divide. It lies at an elevation of 5,102 feet (1,555 m).
According to the United States Census Bureau, the city has a total area of 1.76 square miles (4.56 km), all of it land. Dillon is situated on the Beaverhead River, a “blue ribbon” fly fishing river.
In April 2010, Dillon was listed as one of “America’s Prettiest Towns” by Forbes magazine.
As of the 2010 census, there were 4,134 people, 1,774 households, and 897 families residing in the city. The population density was 2,348.9 inhabitants per square mile (906.9/km). There were 1,930 housing units at an average density of 1,096.6 per square mile (423.4/km). The racial makeup of the city was 94.7% White, 0.3% African American, 1.4% Native American, 0.5% Asian, 0.6% Pacific Islander, 0.6% from other races, and 1.9% from two or more races. Hispanic or Latino of any race were 3.5% of the population.
There were 1,774 households of which 23.0% had children under the age of 18 living with them, 38.2% were married couples living together, 9.1% had a female householder with no husband present, 3.3% had a male householder with no wife present, and 49.4% were non-families. 40.1% of all households were made up of individuals and 15.9% had someone living alone who was 65 years of age or older. The average household size was 2.08 and the average family size was 2.82.
The median age in the city was 33.9 years. 20% of residents were under the age of 18; 19.4% were between the ages of 18 and 24; 20.3% were from 25 to 44; 23.7% were from 45 to 64; and 16.7% were 65 years of age or older. The gender makeup of the city was 49.4% male and 50.6% female.
As of the 2000 census, there were 3,752 people, 1,669 households, and 934 families residing in the city. The population density was 2,300.7 people per square mile (888.7/km²). There were 1,831 housing units at an average density of 1,122.7 per square mile (433.7/km²). The racial makeup of the city was 96.43% White, 0.35% African American, 1.31% Native American, 0.13% Asian, 0.61% from other races, and 1.17% from two or more races. Hispanic or Latino of any race were 1.95% of the population.
There were 1,669 households out of which 27.6% had children under the age of 18 living with them, 44.3% were married couples living together, 8.3% had a female householder with no husband present, and 44.0% were non-families. 36.2% of all households were made up of individuals and 14.9% had someone living alone who was 65 years of age or older. The average household size was 2.19 and the average family size was 2.88.
In the city, the population was spread out with 22.7% under the age of 18, 11.1% from 18 to 24, 25.5% from 25 to 44, 22.4% from 45 to 64, and 18.3% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 97.5 males. For every 100 females age 18 and over, there were 94.6 males.
The median income for a household in the city was $26,389, and the median income for a family was $39,643. Males had a median income of $25,625 versus $18,906 for females. The per capita income for the city was $16,432. About 13.8% of families and 18.2% of the population were below the poverty line, including 15.9% of those under age 18 and 15.9% of those age 65 or over.