Greenup township
- County:
- Cumberland County
- County Seat:
- No
- Area (mi²):
- 47.445
- State:
- Illinois
Greenup township is located in Cumberland County, Illinois. Greenup township has a 2026 population of 2,234. Greenup township is currently growing at a rate of 0.27% annually but its population has decreased by -1.28% since the most recent census, which recorded a population of 2,263 in 2020.
The median household income in Greenup township is $57,713 with a poverty rate of 8.27%. The median age in Greenup township is 39.7 years: 39.7 years for males, and 40 years for females. For every 100 females there are 74.4 males.