Belle Prairie City is an incorporated town in Hamilton County, Illinois, United States. The population was 49 at the 2020 census. It is part of the Mount Vernon Micropolitan Statistical Area. Geography Belle Prairie City is located in northern Hamilton County at (38.219686, -88.555383). It is southeast of the city of Mount Vernon and south of Interstate 64 via Exit 100. It is north of McLeansboro, the Hamilton County seat. According to the 2010 census, Belle Prairie City has a total area of , all land. Demographics As of the census of 2000, there were 60 people, 24 households, and 19 families residing in the town. The population density was . There were 26 housing units at an average density of . The racial makeup of the town was 100.00% White. There were 24 households, out of which 41.7% had children under the age of 18 living with them, 66.7% were married couples living together, 4.2% had a female householder with no husband present, and 20.8% were non-families. 20.8% of all households were made up of individuals, and 16.7% had someone living alone who was 65 years of age or older. The average household size was 2.50 and the average family size was 2.89. In the town, the population was spread out, with 25.0% under the age of 18, 6.7% from 18 to 24, 25.0% from 25 to 44, 28.3% from 45 to 64, and 15.0% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 106.9 males. For every 100 females age 18 and over, there were 114.3 males. The median income for a household in the town was $37,031, and the median income for a family was $37,344. Males had a median income of $35,000 versus $22,083 for females. The per capita income for the town was $19,528. None of the population and none of the families were below the poverty line. References External links Hamilton County Historical Society 1869 establishments in Illinois Mount Vernon, Illinois micropolitan area Populated places established in 1869 Towns in Hamilton County, Illinois Towns in Illinois