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.