| Official Name: | Carlyle Township |
| Settlement Type: | Township |
| Image Map1: | Map of Illinois highlighting Clinton County.svg |
| Mapsize1: | 150px |
| Map Caption1: | Clinton County's location in Illinois |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Clinton |
| Established Title: | Established |
| Established Date: | November 4, 1873 |
| Area Total Sq Mi: | 20.67 |
| Area Land Sq Mi: | 17.83 |
| Area Water Sq Mi: | 2.84 |
| Area Water Percent: | 13.74 |
| Population As Of: | 2020 |
| Population Total: | 3842 |
| Population Density Sq Mi: | auto |
| Elevation M: | 137 |
| Elevation Ft: | 449 |
| Coordinates: | 38.6097°N -89.3589°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 62231 |
| Blank Name: | FIPS code |
| Blank Info: | 17-027-11241 |
| Unit Pref: | Imperial |
Carlyle Township is one of fifteen townships in Clinton County, Illinois, United States. As of the 2020 census, its population was 3,842 and it contained 1,764 housing units.[1]
According to the 2010 census, the township has a total area of, of which (or 86.26%) is land and (or 13.74%) is water.[2]
The township contains these cemeteries: Carlyle City Cemetery, Club Lake Grave Yard, Golder Grave Yard, Luebbers Grave Yard (now flooded), McAllister Grave Yard, Poor Farm Cemetery and St. Mary's Catholic Cemetery.[3]
As of the 2020 census there were 3,842 people, 1,577 households, and 1,123 families residing in the township. The population density was 186.03PD/sqmi. There were 1,764 housing units at an average density of 85.41/sqmi. The racial makeup of the township was 89.12% White, 3.80% African American, 0.39% Native American, 0.86% Asian, 0.00% Pacific Islander, 0.68% from other races, and 5.15% from two or more races. Hispanic or Latino of any race were 1.98% of the population.
There were 1,577 households, out of which 31.30% had children under the age of 18 living with them, 48.64% were married couples living together, 18.20% had a female householder with no spouse present, and 28.79% were non-families. 25.70% of all households were made up of individuals, and 10.50% had someone living alone who was 65 years of age or older. The average household size was 2.30 and the average family size was 2.68.
The township's age distribution consisted of 16.6% under the age of 18, 17.2% from 18 to 24, 23.1% from 25 to 44, 25.6% from 45 to 64, and 17.6% who were 65 years of age or older. The median age was 36.7 years. For every 100 females, there were 93.8 males. For every 100 females age 18 and over, there were 86.9 males.
The median income for a household in the township was $54,521, and the median income for a family was $70,650. Males had a median income of $28,563 versus $28,468 for females. The per capita income for the township was $28,066. About 10.1% of families and 10.7% of the population were below the poverty line, including 10.1% of those under age 18 and 25.6% of those age 65 or over.