| Official Name: | Sumpter Township |
| Settlement Type: | Township |
| Image Map1: | Map of Illinois highlighting Cumberland County.svg |
| Mapsize1: | 150px |
| Map Caption1: | Cumberland County's location in Illinois |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Cumberland |
| Established Title: | Established |
| Established Date: | November 6, 1860 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 45.69 |
| Area Land Sq Mi: | 45.69 |
| Area Water Sq Mi: | 0 |
| Area Water Percent: | 0 |
| Population As Of: | 2020 |
| Population Total: | 2051 |
| Population Density Sq Mi: | auto |
| Elevation M: | 181 |
| Elevation Ft: | 594 |
| Coordinates: | 39.2667°N -103°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 62428, 62436, 62445, 62468, 62469 |
| Blank Name: | FIPS code |
| Blank Info: | 17-035-73729 |
Sumpter Township is one of eight townships in Cumberland County, Illinois, USA. As of the 2020 census, its population was 2,051 and it contained 880 housing units.[1]
According to the 2010 census, the township has a total area of, all land.[2]
The township contains these seven cemeteries: Bear Creek, Berry, Farmer, Friends Grove, Salem, Toledo and Upper Berry.
As of the 2020 census there were 2,051 people, 840 households, and 584 families residing in the township. The population density was 44.89PD/sqmi. There were 880 housing units at an average density of 19.26/sqmi. The racial makeup of the township was 96.10% White, 0.15% African American, 0.15% Native American, 0.34% Asian, 0.00% Pacific Islander, 0.24% from other races, and 3.02% from two or more races. Hispanic or Latino of any race were 0.78% of the population.
There were 840 households, out of which 28.50% had children under the age of 18 living with them, 60.95% were married couples living together, 5.48% had a female householder with no spouse present, and 30.48% were non-families. 24.40% of all households were made up of individuals, and 19.50% had someone living alone who was 65 years of age or older. The average household size was 2.49 and the average family size was 2.96.
The township's age distribution consisted of 24.7% under the age of 18, 8.2% from 18 to 24, 23.2% from 25 to 44, 27.4% from 45 to 64, and 16.5% who were 65 years of age or older. The median age was 37.8 years. For every 100 females, there were 105.9 males. For every 100 females age 18 and over, there were 104.0 males.
The median income for a household in the township was $67,500, and the median income for a family was $80,357. Males had a median income of $41,105 versus $29,926 for females. The per capita income for the township was $27,878. About 8.4% of families and 10.2% of the population were below the poverty line, including 13.0% of those under age 18 and 12.4% of those age 65 or over.