| Official Name: | Raritan Township |
| Settlement Type: | Township |
| Image Map1: | Map of Illinois highlighting Henderson County.svg |
| Mapsize1: | 150px |
| Map Caption1: | Henderson County's location in Illinois |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Henderson |
| Established Title: | Established |
| Established Date: | November 6, 1906 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 34.01 |
| Area Land Sq Mi: | 34.01 |
| Area Water Sq Mi: | 0 |
| Area Water Percent: | 0 |
| Population As Of: | 2020 |
| Population Total: | 242 |
| Population Density Sq Mi: | auto |
| Elevation M: | 226 |
| Elevation Ft: | 741 |
| Coordinates: | 40.6792°N -90.8478°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 61420, 61460, 61471, 61480 |
| Blank Name: | FIPS code |
| Blank Info: | 17-071-62861 |
Raritan Township is one of eleven townships in Henderson County, Illinois, USA. As of the 2020 census, its population was 242 and it contained 120 housing units.[1]
According to the 2021 census gazetteer files, Raritan Township has a total area of 34.01sqmi, all land.[2]
The township contains two cemeteries: Raritan and Saint Patrick's.
As of the 2020 census there were 242 people, 58 households, and 48 families residing in the township. The population density was 7.12PD/sqmi. There were 120 housing units at an average density of 3.53/sqmi. The racial makeup of the township was 99.17% White, 0.00% African American, 0.00% Native American, 0.00% Asian, 0.00% Pacific Islander, 0.00% from other races, and 0.83% from two or more races. Hispanic or Latino of any race were 0.00% of the population.
There were 58 households, out of which 25.90% had children under the age of 18 living with them, 70.69% were married couples living together, 12.07% had a female householder with no spouse present, and 17.24% were non-families. 15.50% of all households were made up of individuals, and 13.80% 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 2.71.
The township's age distribution consisted of 28.3% under the age of 18, 0.7% from 18 to 24, 18.7% from 25 to 44, 22.8% from 45 to 64, and 29.7% who were 65 years of age or older. The median age was 46.6 years. For every 100 females, there were 66.7 males. For every 100 females age 18 and over, there were 76.3 males.
The median income for a household in the township was $58,750, and the median income for a family was $46,500. Males had a median income of $70,179 versus $23,889 for females. The per capita income for the township was $28,274. None of the population was below the poverty line.