| Official Name: | Knights Prairie Township |
| Settlement Type: | Township |
| Unit Pref: | Imperial |
| Image Map1: | Map of Illinois highlighting Hamilton County.svg |
| Mapsize1: | 150px |
| Map Caption1: | Hamilton County's location in Illinois |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Hamilton |
| Established Title: | Established |
| Established Date: | November 3, 1885 |
| Area Total Sq Mi: | 36.39 |
| Area Land Sq Mi: | 36.30 |
| Area Water Sq Mi: | 0.09 |
| Area Water Percent: | 0.25 |
| Population As Of: | 2020 |
| Population Total: | 545 |
| Population Density Sq Mi: | auto |
| Elevation M: | 154 |
| Elevation Ft: | 505 |
| Coordinates: | 38.0772°N -88.6583°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 62828, 62835, 62859, 62887 |
| Blank Name: | FIPS code |
| Blank Info: | 17-065-40299 |
Knights Prairie Township is one of twelve townships in Hamilton County, Illinois, USA. As of the 2020 census, its population was 545 and it contained 250 housing units.[1]
According to the 2021 census gazetteer files, Knight Prairie Township has a total area of 36.39sqmi, of which 36.3sqmi (or 99.75%) is land and 0.09sqmi (or 0.25%) is water.[2]
As of the 2020 census there were 545 people, 181 households, and 115 families residing in the township. The population density was 14.98PD/sqmi. There were 250 housing units at an average density of 6.87/sqmi. The racial makeup of the township was 93.03% White, 0.55% African American, 0.18% Native American, 0.00% Asian, 0.00% Pacific Islander, 0.73% from other races, and 5.50% from two or more races. Hispanic or Latino of any race were 1.83% of the population.
There were 181 households, out of which 2.80% had children under the age of 18 living with them, 53.04% were married couples living together, 10.50% had a female householder with no spouse present, and 36.46% were non-families. 29.80% of all households were made up of individuals, and 13.30% had someone living alone who was 65 years of age or older. The average household size was 1.83 and the average family size was 2.19.
The township's age distribution consisted of 3.9% under the age of 18, 3.9% from 18 to 24, 15.1% from 25 to 44, 21.1% from 45 to 64, and 55.9% who were 65 years of age or older. The median age was 68.0 years. For every 100 females, there were 106.9 males. For every 100 females age 18 and over, there were 105.2 males.
The median income for a household in the township was $54,659, and the median income for a family was $85,750. Males had a median income of $17,222 versus $19,565 for females. The per capita income for the township was $43,057. None of the population was below the poverty line.