Gates Mills is a village in Cuyahoga County, Ohio, United States. The population was 2,270 at the 2010 census. Gates Mills is a suburb of Cleveland and was originally part of Mayfield Township.
The village was named for Halsey Gates, the proprietor of a local mill.
According to the United States Census Bureau, the village has a total area of 9.10 square miles (23.57 km2), of which 8.97 square miles (23.23 km2) is land and 0.13 square miles (0.34 km2) is water.
As of the census of 2010, there were 2,270 people, 919 households, and 698 families living in the village. The population density was 253.1 inhabitants per square mile (97.7/km2). There were 992 housing units at an average density of 110.6 per square mile (42.7/km2). The racial makeup of the village was 93.0% White, 1.3% African American, 0.1% Native American, 4.0% Asian, 0.4% from other races, and 1.2% from two or more races. Hispanic or Latino of any race were 1.9% of the population.
There were 919 households, of which 23.3% had children under the age of 18 living with them, 68.8% were married couples living together, 4.7% had a female householder with no husband present, 2.5% had a male householder with no wife present, and 24.0% were non-families. 21.7% of all households were made up of individuals, and 10.2% had someone living alone who was 65 years of age or older.