Nachusa township
- County:
- Lee County
- County Seat:
- No
- Area (mi²):
- 28.911
- State:
- Illinois
Nachusa township is located in Lee County, Illinois. Nachusa township has a 2026 population of 441. Nachusa township is currently declining at a rate of -0.23% annually and its population has decreased by -1.78% since the most recent census, which recorded a population of 449 in 2020.
The median household income in Nachusa township is $111,250 with a poverty rate of 0%. The median age in Nachusa township is 50.6 years: 49 years for males, and 52.3 years for females. For every 100 females there are 132.9 males.