Caledonia is a village in Marion County, Ohio, United States.

[6] According to the United States Census Bureau, the village has a total area of 0.23 square miles (0.60 km2), all land.

[7] Caledonia is located along the Whetstone River in the Sandusky Plains: a historically important tended prairie region, & one of only a handful of post-glaciation prairie regions in Ohio.

As of the census of 2020, there were 560 people, 246 housing units, 230 households, and 154 families living in the village.

As of the census[9] of 2010, there were 577 people, 232 households, and 174 families living in the village.

21.1% of all households were made up of individuals, and 10.3% had someone living alone who was 65 years of age or older.

As of the census[4] of 2000, there were 578 people, 230 households, and 169 families living in the village.

The racial makeup of the village was 99.31% White, 0.35% African American, and 0.35% from two or more races.

23.9% of all households were made up of individuals, and 12.2% had someone living alone who was 65 years of age or older.

This branch closed in the middle of the COVID-19 pandemic, & does not have plans to reopen.