Rubicon township
- County:
- Greene County
- County Seat:
- No
- Area (mi²):
- 35.67
- State:
- Illinois
Rubicon township is located in Greene County, Illinois. Rubicon township has a 2026 population of 284. Rubicon township is currently declining at a rate of -1.05% annually and its population has decreased by -4.05% since the most recent census, which recorded a population of 296 in 2020.
The median household income in Rubicon township is $67,679 with a poverty rate of 24.89%. The median age in Rubicon township is 38.2 years: 41.6 years for males, and 29.7 years for females. For every 100 females there are 61.2 males.