Huntsville is a village in Logan County, Ohio, United States. The population was 431 at the 2010 census.
Huntsville was platted in 1846, and named after Aaron L. Hunt, a government surveyor. The village was incorporated in December 1865.
Huntsville is located at 40°26′29″N 83°48′17″W (40.441284, -83.804725).
According to the United States Census Bureau, the village has a total area of 0.30 square miles (0.78 km2), all of it land.
As of the census of 2010, there were 431 people, 159 households, and 123 families living in the village. The population density was 1,436.7 inhabitants per square mile (554.7/km2). There were 189 housing units at an average density of 630.0 per square mile (243.2/km2). The racial makeup of the village was 98.4% White, 0.5% African American, 0.5% from other races, and 0.7% from two or more races. Hispanic or Latino of any race were 0.9% of the population.
There were 159 households, of which 42.1% had children under the age of 18 living with them, 60.4% were married couples living together, 11.3% had a female householder with no husband present, 5.7% had a male householder with no wife present, and 22.6% were non-families. 20.8% of all households were made up of individuals, and 7.6% had someone living alone who was 65 years of age or older.