New Hampton, Missouri  New Hampton is a city in Harrison County, Missouri, United States. The population was 291 at the 2010 census. New Hampton was originally called Hamptonville, and under the latter name was platted in 1869 by Hampton Cox, and named for him. A post office called New Hampton has been in operation since 1881. New Hampton is located at (40.263730, -94.194621). According to the United States Census Bureau, the city has a total area of , all land. At the 2010 census there were 291 people in 123 households, including 80 families, in the city. The population density was . There were 153 housing units at an average density of . The racial makeup of the city was 95.5% White, 1.7% Native American, and 2.7% from two or more races. Hispanic or Latino of any race were 0.3%. Of the 123 households 28.5% had children under the age of 18 living with them, 43.9% were married couples living together, 11.4% had a female householder with no husband present, 9.8% had a male householder with no wife present, and 35.0% were non-families. 30.9% of households were one person and 20.3% were one person aged 65 or older. The average household size was 2.37 and the average family size was 2.90. The median age was 38.1 years. 24.4% of residents were under the age of 18; 11.2% were between the ages of 18 and 24; 20.6% were from 25 to 44; 25.8% were from 45 to 64; and 17.9% were 65 or older. The gender makeup of the city was 49.1% male and 50.9% female. At the 2000 census there were 349 people in 142 households, including 92 families, in the city. The population density was 501.3 people per square mile (192.5/km²). There were 170 housing units at an average density of 244.2 per square mile (93.8/km²). The racial makeup of the city was 100.00% White. Hispanic or Latino of any race were 1.72%. Of the 142 households 26.1% had children under the age of 18 living with them, 54.9% were married couples living together, 6.3% had a female householder with no husband present, and 35.2% were non-families. 31.0% of households were one person and 16.9% were one person aged 65 or older.