Eldorado township
- County:
- Saline County
- County Seat:
- No
- Area (mi²):
- 36.467
- State:
- Illinois
Eldorado township is located in Saline County, Illinois. Eldorado township has a 2026 population of 133. Eldorado township is currently declining at a rate of -1.48% annually and its population has decreased by -1.48% since the most recent census, which recorded a population of 135 in 2020.
The median household income in Eldorado township is $93,333 with a poverty rate of 10.94%. The median age in Eldorado township is 61.6 years: 30.7 years for males, and 61.8 years for females. For every 100 females there are 106.5 males.