Omega township
- County:
- Marion County
- County Seat:
- No
- Area (mi²):
- 35.422
- State:
- Illinois
Omega township is located in Marion County, Illinois. Omega township has a 2026 population of 430. Omega township is currently declining at a rate of -0.92% annually and its population has decreased by -3.8% since the most recent census, which recorded a population of 447 in 2020.
The median household income in Omega township is $59,583 with a poverty rate of 36.87%. The median age in Omega township is 44.2 years: 44.3 years for males, and 44 years for females. For every 100 females there are 110.9 males.