
Bath township
- County:
- Mason County
- County Seat:
- No
- Area (mi²):
- 66.783
- State:
- Illinois
Bath township is located in Mason County, Illinois. Bath township has a 2025 population of 690. Bath township is currently declining at a rate of -1.43% annually and its population has decreased by -6.5% since the most recent census, which recorded a population of 738 in 2020.
The average household income in Bath township is $70,873 with a poverty rate of 11.13%. The median age in Bath township is 55.9 years: 50.5 years for males, and 56.7 years for females.