Elk Prairie township
- County:
- Jefferson County
- County Seat:
- No
- Area (mi²):
- 27.456
- State:
- Illinois
Elk Prairie township is located in Jefferson County, Illinois. Elk Prairie township has a 2026 population of 671. Elk Prairie township is currently declining at a rate of -0.59% annually and its population has decreased by -2.47% since the most recent census, which recorded a population of 688 in 2020.
The median household income in Elk Prairie township is $51,914 with a poverty rate of 15.85%. The median age in Elk Prairie township is 49.9 years: 50.1 years for males, and 49.6 years for females. For every 100 females there are 104.7 males.