Ustick township
- County:
- Whiteside County
- County Seat:
- No
- Area (mi²):
- 35.437
- State:
- Illinois
Ustick township is located in Whiteside County, Illinois. Ustick township has a 2026 population of 534. Ustick township is currently growing at a rate of 0.19% annually but its population has decreased by -1.48% since the most recent census, which recorded a population of 542 in 2020.
The median household income in Ustick township is $101,083 with a poverty rate of 0%. The median age in Ustick township is 60.4 years: 59.7 years for males, and 64.2 years for females. For every 100 females there are 148.5 males.