Waltham township
- County:
- Mower County
- County Seat:
- No
- Area (mi²):
- 35.914
- State:
- Minnesota
Waltham township is located in Mower County, Minnesota. Waltham township has a 2026 population of 363. Waltham township is currently growing at a rate of 1.97% annually and its population has increased by 1.97% since the most recent census, which recorded a population of 356 in 2020.
The median household income in Waltham township is $95,000 with a poverty rate of 4.56%. The median age in Waltham township is 41.9 years: 46 years for males, and 36.3 years for females. For every 100 females there are 94.7 males.