McGuffey is a village in Hardin County, Ohio, United States.

[4] John McGuffey had donated land for a railroad depot in exchange for the naming rights.

[4] According to the United States Census Bureau, the village has a total area of 0.36 square miles (0.93 km2), all land.

There were 229 housing units at an average density of 636.1 per square mile (245.6/km2).

28.1% of all households were made up of individuals, and 16.1% had someone living alone who was 65 years of age or older.

27.5% of all households were made up of individuals, and 13.0% had someone living alone who was 65 years of age or older.