As of the census of 2010, there were 422 people, 192 households, and 117 families residing in the city. The population density was. There were 209 housing units at an average density of. The racial makeup of the city was 96.4% White, 0.2% African American, 0.2% Native American, 0.2% Asian, 1.4% from other races, and 1.4% from two or more races. Hispanic or Latino of any race were 1.4% of the population. There were 192 households of which 23.4% had children under the age of 18 living with them, 47.9% were married couplesliving together, 8.3% had a female householder with no husband present, 4.7% had a male householder with no wife present, and 39.1% were non-families. 34.9% of all households were made up of individuals and 15.6% had someone living alone who was 65 years of age or older. The average household size was 2.20 and the average family size was 2.81. The median age in the city was 45.4 years. 17.3% of residents were under the age of 18; 8.9% were between the ages of 18 and 24; 22.9% were from 25 to 44; 30.1% were from 45 to 64; and 20.6% were 65 years of age or older. The gender makeup of the city was 50.2% male and 49.8% female.
2000 census
As of the census of 2000, there were 488 people, 198 households, and 134 families residing in the city. The population density was 496.4 people per square mile. There were 207 housing units at an average density of 210.6 per square mile. The racial makeup of the city was 98.77% White, 0.61% from other races, and 0.61% from two or more races. Hispanic or Latino of any race were 1.02% of the population. There were 198 households out of which 30.8% had children under the age of 18 living with them, 58.6% were married couples living together, 6.6% had a female householder with no husband present, and 32.3% were non-families. 26.8% of all households were made up of individuals and 17.2% had someone living alone who was 65 years of age or older. The average household size was 2.46 and the average family size was 3.00. 24.8% were under the age of 18, 5.5% from 18 to 24, 29.5% from 25 to 44, 19.3% from 45 to 64, and 20.9% were 65 years of age or older. The median age was 41 years. For every 100 females, there were 102.5 males. For every 100 females age 18 and over, there were 98.4 males. The median income for a household in the city was $39,500, and the median income for a family was $41,667. Males had a median income of $29,107 versus $22,656 for females. The per capita income for the city was $18,592. About 5.1% of families and 6.1% of the population were below the poverty line, including 5.0% of those under age 18 and 8.3% of those age 65 or over.
Arts and culture
Stanhope is known locally for its annual Watermelon Day celebration. Starting in 1958, the event is sponsored by the localLions Club organization. The celebration includes a parade, slow pitch softball tournament, games and free watermelon.
