St. Martin
- County:
- Brown County
- County Seat:
- No
- Area (mi²):
- 1.937
- State:
- Ohio
St. Martin is a CDP located in Brown County, Ohio Ohio. Unfortunately, the data for this location is currently limited or unavailable.
The median household income in St. Martin is $55,962 with a poverty rate of 18.29%. The median age in St. Martin is 56.9 years: 64.2 years for males, and 54.9 years for females. For every 100 females there are 76.3 males.