Lewis township
- County:
- Brown County
- County Seat:
- No
- Area (mi²):
- 42.539
- State:
- Ohio
Lewis township is located in Brown County, Ohio. Lewis township has a 2026 population of 2,452. Lewis township is currently growing at a rate of 1.16% annually and its population has increased by 2.12% since the most recent census, which recorded a population of 2,401 in 2020.
The median household income in Lewis township is $70,000 with a poverty rate of 26.57%. The median age in Lewis township is 40.9 years: 35.2 years for males, and 47.9 years for females. For every 100 females there are 123.9 males.