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 residing 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. The average household size was 2.45 and the average family size was 2.84.

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