About This Place
Waldo is a village in Marion County, Ohio, United States. The population was 332 at the 2000 census.
Waldo is located at 40°27′31″N 83°4′41″W / 40.45861°N 83.07806°W / 40.45861; -83.07806 (40.458481, -83.078054).
According to the United States Census Bureau, the village has a total area of 0.6 square miles (1.7 km²), all of it land.