| Official Name: | Crook Township |
| Settlement Type: | Township |
| 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 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 35.83 |
| Area Land Sq Mi: | 35.62 |
| Area Water Sq Mi: | 0.20 |
| Area Water Percent: | 0.57 |
| Population As Of: | 2020 |
| Population Total: | 293 |
| Population Density Sq Mi: | auto |
| Elevation M: | 143 |
| Elevation Ft: | 469 |
| Coordinates: | 38.0786°N -88.4331°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 62835, 62859 |
| Blank Name: | FIPS code |
| Blank Info: | 17-065-17627 |
Crook Township is one of twelve townships in Hamilton County, Illinois, USA. As of the 2020 census, its population was 293 and it contained 146 housing units.[1]
According to the 2021 census gazetteer files, Crook Township has a total area of 35.83sqmi, of which 35.62sqmi (or 99.43%) is land and 0.2sqmi (or 0.57%) is water.[2]
(This list is based on USGS data and may include former settlements.)
(These towns are listed as "historical" by the USGS.)
The township contains these seven cemeteries: Arterberry, Hopkins, Munsell, New Hope, Old Brush Harbor, Prince and Webb.
As of the 2020 census there were 293 people, 117 households, and 39 families residing in the township. The population density was 8.18PD/sqmi. There were 146 housing units at an average density of 4.08/sqmi. The racial makeup of the township was 97.27% White, 0.00% African American, 0.34% Native American, 0.00% Asian, 0.00% Pacific Islander, 0.00% from other races, and 2.39% from two or more races. Hispanic or Latino of any race were 0.34% of the population.
There were 117 households, out of which 31.60% had children under the age of 18 living with them, 33.33% were married couples living together, 0.00% had a female householder with no spouse present, and 66.67% were non-families. 42.70% of all households were made up of individuals, and 42.70% had someone living alone who was 65 years of age or older. The average household size was 1.97 and the average family size was 3.00.
The township's age distribution consisted of 11.7% under the age of 18, 10.8% from 18 to 24, 19.5% from 25 to 44, 16.5% from 45 to 64, and 41.6% who were 65 years of age or older. The median age was 54.6 years. For every 100 females, there were 106.3 males. For every 100 females age 18 and over, there were 82.1 males.
The per capita income for the township was $47,222. No families and 6.4% of the population were below the poverty line, including none of those under age 18 and none of those age 65 or over.