Graham County is a county located in the U.S. state of Kansas. As of the 2010 census, the county population was 2,597. Its county seat and most populous city is Hill City.
Hill City is a city in and the county seat of Graham County, Kansas, United States. As of the census of 2010, there were 1,474 people, 669 households, and 404 families residing in the city. The population density was 1,474.0 inhabitants per square mile (569.1/km2). There were 783 housing units at an average density of 783.0 per square mile (302.3/km2). The racial makeup of the city was 91.2% White, 4.5% African American, 0.8% Native American, 0.3% Asian, 0.3% from other races, and 2.8% from two or more races. Hispanic or Latino of any race were 2.5% of the population.
There were 669 households of which 24.2% had children under the age of 18 living with them, 49.8% were married couples living together, 6.9% had a female householder with no husband present, 3.7% had a male householder with no wife present, and 39.6% were non-families. 35.4% of all households were made up of individuals and 19.6% had someone living alone who was 65 years of age or older. The average household size was 2.14 and the average family size was 2.76.
The median age in the city was 48 years. 20.8% of residents were under the age of 18; 6.2% were between the ages of 18 and 24; 19% were from 25 to 44; 29.9% were from 45 to 64; and 23.9% were 65 years of age or older. The gender makeup of the city was 46.9% male and 53.1% female.