Columbia City is a city in Columbia Township, Whitley County, in the U.S. state of Indiana. The population was 9,892 (2020 Census), growing by 13% since the 2010 Census. The city is the county seat of Whitley County. History The Whitley County Courthouse was designed (1888–1891) by Brentwood S. Tolan, of Fort Wayne, Indiana. The building was added to the National Register of Historic Places in 1979. The Thomas R. Marshall House was added to the register in 1983 and the Columbia City Historic District was added in 1987. Geography Columbia City is located at (41.158569, -85.487784). According to the 2010 census, Columbia City has a total area of , of which (or 99.63%) is land and (or 0.37%) is water. Demographics 2010 census As of the census of 2010, there were 8,750 people, 3,658 households, and 2,235 families residing in the city. The population density was . There were 3,944 housing units at an average density of . The racial makeup of the city was 96.7% White, 0.5% African American, 0.3% Native American, 0.5% Asian, 0.6% from other races, and 1.4% from two or more races. Hispanic or Latino of any race were 2.2% of the population. There were 3,658 households, of which 30.9% had children under the age of 18 living with them, 42.4% were married couples living together, 13.9% had a female householder with no husband present, 4.8% had a male householder with no wife present, and 38.9% were non-families. 33.5% of all households were made up of individuals, and 14.2% had someone living alone who was 65 years of age or older. The average household size was 2.32 and the average family size was 2.93. The median age in the city was 36.1 years. 24.9% of residents were under the age of 18; 9.1% were between the ages of 18 and 24; 26.7% were from 25 to 44; 23.9% were from 45 to 64; and 15.3% were 65 years of age or older. The gender makeup of the city was 47.6% male and 52.4% female. 2000 census As of the census of 2000, there were 7,077 people, 3,018 households, and 1,874 residing in the city. The population density was . There were 3,191 housing units at an average density of . The racial makeup of the city was 98.11% White, 0.32% African American, 0.44% Native American, 0.08% Asian, 0.03% Pacific Islander, 0.34% from other races, and