climate in this area is characterized by hot, humid summers and generally cool to cold winters. According to the Köppen Climate Classification system, Martinsville has a humid subtropical climate, abbreviated "Cfa" on climate maps. Transportation Highways (along SR 37) designated September 18, 2018 Rail Indiana Southern Railroad Demographics 2010 census As of the census of 2010, there were 11,828 people, 7,910 households, and 6,990 families living in the city. The population density was . There were 5,973 housing units at an average density of . The racial makeup of the city was 97.5% White, 0.2% African American, 0.3% Native American, 0.4% Asian, 0.1% Pacific Islander, 0.5% from other races, and 1.0% from two or more races. Hispanic or Latino people of any race were 1.3% of the population. There were 7,610 households, of which 33.6% had children under the age of 18 living with them, 44.0% were married couples living together, 14.3% had a female householder with no husband present, 6.5% had a male householder with no wife present, and 35.1% were non-families. 29.5% of all households were made up of individuals, and 12.9% had someone living alone who was 65 years of age or older. The average household size was 2.47 and the average family size was 3.03. The median age in the city was 36.6 years. 25% of residents were under the age of 18; 10.2% were between the ages of 18 and 24; 25.8% were from 25 to 44; 24.4% were from 45 to 64; and 14.5% were 65 years of age or older. The gender makeup of the city was 48.6% male and 51.4% female. 2000 census As of the census of 2000, there were 11,698 people, 7,921 households, and 6,086 families living in the city. The population density was . There were 5,880 housing units at an average density of . The racial makeup of the city was 98.62% White, 0.01% African American, 0.27% Native American, 0.18% Asian, 0.04% Pacific Islander, 0.25% from other races, and 0.56% from two or more races. Hispanic or Latino people of any race were 1.00% of the population. There were 7,921 households, out of which 40.0% had children under the age of 18 living with them, 50.8% were married couples living together, 11.5% had a female householder with no husband present, and 33.2% were non-families. 28.8% of all households were made up of individuals, and 12.7% had someone living