Crook township
- County:
- Hamilton County
- County Seat:
- No
- Area (mi²):
- 35.623
- State:
- Illinois
Crook township is located in Hamilton County, Illinois. Crook township has a 2026 population of 284. Crook township is currently declining at a rate of -0.7% annually and its population has decreased by -1.39% since the most recent census, which recorded a population of 288 in 2020.
The median household income in Crook township is $81,938 with a poverty rate of 0%. The median age in Crook township is 40.9 years: 37 years for males, and 56.2 years for females. For every 100 females there are 73.8 males.