
Heidelberg
- County:
- Le Sueur County
- County Seat:
- No
- Area (mi²):
- 0.524
- State:
- Minnesota
Heidelberg is a city located in Le Sueur County, Minnesota. Heidelberg has a 2025 population of 133. Heidelberg is currently declining at a rate of 0% annually and its population has decreased by -1.48% since the most recent census, which recorded a population of 135 in 2020.
The average household income in Heidelberg is $118,152 with a poverty rate of 0.45%. The median age in Heidelberg is 39.4 years: 26.7 years for males, and 39.5 years for females.