Greenhills is a village in Hamilton County, Ohio, United States.

A planned community, it was established by the United States government during the Great Depression.

Most of the village is a National Historic Landmark for its history as a planned modernist community.

[13] The community's James Whallon House, which serves as the village hall is also listed in the National Register of Historic Places.

[16] According to the United States Census Bureau, the village has a total area of 1.25 square miles (3.24 km2), all land.

33.2% of all households were made up of individuals, and 10.8% were someone living alone who was 65 years of age or older.

Greenhills is served by the Winton Woods City School District and a branch of the Public Library of Cincinnati and Hamilton County.