Lake Hamilton is a census-designated place (CDP) in Garland County, Arkansas, United States.

The community is bordered to the north, across the lake, by the city of Hot Springs.

[3] Arkansas State Highway 7 passes through the community, bridging the lake via the two islands.

As of the 2020 United States census, there were 2,084 people, 962 households, and 704 families residing in the CDP.

There were 1,181 housing units at an average density of 597.5 per square mile (230.7/km2).

28.3% of all households were made up of individuals, and 9.3% had someone living alone who was 65 years of age or older.