Elm Grove is a census-designated place (CDP) in Adair County, Oklahoma, United States.

[4] Elm Grove is located along Oklahoma State Highway 100.

It is 4 miles (6 km) east of Stilwell, the county seat, and 3 miles (5 km) west of the Arkansas border.

According to the United States Census Bureau, the CDP has a total area of 1.7 square miles (4.3 km2), of which 0.0039 square miles (0.01 km2), or 0.25%, is water.

This Oklahoma state location article is a stub.