Knox, Indiana

Knox is a city in Center Township, Starke County, in the U.S. state of Indiana. The population was 3,662 at the 2020 census. The city is the county seat of Starke County.

Knox was founded in 1851, and is named for American Revolutionary War General Henry Knox. The Knox post office has been in operation since 1820.

Knox is located along the Yellow River.

According to the 2010 United States census, Knox has a total area of 3.92 square miles (10.15 km²), all land.

From 2014 until 2024, Knox was the geographic center of the Big Ten Conference, according to a 2018 article in fivethirtyeight.com that referred to locations of various NCAA Men's Basketball Conference championships.

As of the 2010 census, there were 3,704 people, 1,457 households, and 975 families in the city. The population density was 944.9 inhabitants per square mile (364.8/km²). There were 1,633 housing units at an average density of 416.6 per square mile (160.9/km²). The racial makeup of the city was 95.3% White, 0.3% African American, 0.2% Native American, 0.3% Asian, 0.4% from other races, and 1% from two or more races. Hispanic or Latino of any race were 2.9% of the population.

There were 1,457 households, of which 34.8% had children under the age of 18 living with them, 41% were married couples living together, 14% had a female householder with no husband present, 6.9% had a male householder with no wife present, and 33.1% were non-families. 27.9% of all households were made up of individuals, and 13.6% had someone living alone who was 65 years of age or older. The average household size was 2.53 and the average family size was 3.03.

The median age in the city was 36.2 years. 26% of residents were under the age of 18; 10.1% were between the ages of 18 and 24; 24.5% were from 25 to 44; 25.8% were from 45 to 64; and 13.5% were 65 years of age or older. The gender makeup of the city was 46.3% male and 53.7% female.