located at (40.737991, -85.172223). According to the 2010 census, Bluffton has a total area of , of which (or 98.46%) is land and (or 1.54%) is water. Demographics 2010 census As of the 2010 census, there were 9,897 people, 4,112 households, and 2,585 families living in the city. The population density was . There were 4,532 housing units at an average density of . The racial makeup of the city was 96.0% White, 0.7% African American, 0.4% Native American, 0.5% Asian, 1.3% from other races, and 1.1% from two or more races. Hispanic or Latino of any race were 3.3% of the population. There were 4,112 households, of which 31.3% had children under the age of 18 living with them, 46.9% were married couples living together, 11.3% had a female householder with no husband present, 4.7% had a male householder with no wife present, and 37.1% were non-families. 32.4% of all households were made up of individuals, and 13.4% had someone living alone who was 65 years of age or older. The average household size was 2.34 and the average family size was 2.93. The median age in the city was 38.3 years. 24.6% of residents were under the age of 18; 8.8% were between the ages of 18 and 24; 24.3% were from 25 to 44; 25.3% were from 45 to 64; and 16.9% were 65 years of age or older. The gender makeup of the city was 48.0% male and 52.0% female. 2000 census As of the 2000 census, there were 9,536 people, 3,922 households, and 2,517 families living in the city. The population density was . There were 4,197 housing units at an average density of . The racial makeup of the city was 97.65% White, 0.34% African American, 0.22% Native American, 0.24% Asian, 0.07% Pacific Islander, 0.79% from other races, and 0.69% from two or more races. Hispanic or Latino of any race were 2.35% of the population. There were 3,922 households, out of which 30.4% had children under the age of 18 living with them, 50.2% were married couples living together, 10.7% had a female householder with no husband present, and 35.8% were non-families. 31.4% of all households were made up of individuals, and 13.4% had someone living alone who was 65 years of age or older. The average household size was 2.35 and the average family size was 2.96. In the city, the population