Locust Grove is an unincorporated community in Adams County, Ohio, United States.

Locust Grove is located at the junction of Ohio State Route 41 and Ohio State Route 73 3.1 miles (5.0 km) north-northeast of Peebles.

[2] The community was named for a grove of locust trees near the original town site.

[2] A post office was established at Locust Grove in 1833, and remained in operation until 1920.

This Adams County, Ohio state location article is a stub.