| Official Name: | Creek Township |
| Settlement Type: | Township |
| Unit Pref: | imperial |
| Image Map1: | Map of Illinois highlighting DeWitt County.svg |
| Mapsize1: | 150px |
| Map Caption1: | DeWitt County's location in Illinois |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | DeWitt |
| Established Title: | Established |
| Established Date: | November 2, 1858 |
| Area Total Sq Mi: | 36.82 |
| Area Land Sq Mi: | 35.41 |
| Area Water Sq Mi: | 1.42 |
| Area Water Percent: | 3.85 |
| Population As Of: | 2020 |
| Population Total: | 479 |
| Population Density Sq Mi: | auto |
| Elevation M: | 217 |
| Elevation Ft: | 712 |
| Coordinates: | 40.0908°N -88.8556°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 61727, 61735, 61750, 61882 |
| Blank Name Sec1: | FIPS code |
| Blank Info Sec1: | 17-039-17302 |
| Blank1 Name Sec1: | GNIS feature ID |
| Blank1 Info Sec1: | 428853 |
Creek Township is one of thirteen townships in DeWitt County, Illinois, USA. As of the 2020 census, its population was 479 and it contained 203 housing units.[1] The township contains the east half of Weldon Springs State Park.
According to the 2021 census gazetteer files, Creek Township has a total area of 36.82sqmi, of which 35.41sqmi (or 96.15%) is land and 1.42sqmi (or 3.85%) is water.[2]
The township contains these two cemeteries: Lisenby and Rose.
As of the 2020 census there were 479 people, 168 households, and 145 families residing in the township. The population density was 13.01PD/sqmi. There were 203 housing units at an average density of 5.51/sqmi. The racial makeup of the township was 97.91% White, 0.21% African American, 0.00% Native American, 0.21% Asian, 0.21% Pacific Islander, 0.42% from other races, and 1.04% from two or more races. Hispanic or Latino of any race were 1.04% of the population.
There were 168 households, out of which 31.50% had children under the age of 18 living with them, 69.05% were married couples living together, 7.14% had a female householder with no spouse present, and 13.69% were non-families. 13.70% of all households were made up of individuals, and 0.00% had someone living alone who was 65 years of age or older. The average household size was 3.09 and the average family size was 3.42.
The township's age distribution consisted of 32.9% under the age of 18, 10.0% from 18 to 24, 22.5% from 25 to 44, 24.2% from 45 to 64, and 10.4% who were 65 years of age or older. The median age was 30.8 years. For every 100 females, there were 139.2 males. For every 100 females age 18 and over, there were 148.6 males.
The median income for a household in the township was $59,821, and the median income for a family was $86,979. Males had a median income of $51,016 versus $36,979 for females. The per capita income for the township was $31,324. About 4.1% of families and 7.3% of the population were below the poverty line, including 15.8% of those under age 18 and none of those age 65 or over.