Vista Grove is an unincorporated residential community in central DeKalb County, Georgia, United States, located north and northeast of the Atlanta suburb of Decatur. It is also referred to as Oak Grove, although Oak Grove more properly refers to the central neighborhood rather than the greater community. North Briarcliff, which primarily falls north of Briarcliff Rd. and south of Interstate 85, is on the northern edge of this community.
Vista Grove includes several distinct subdivisions, and is centered on the intersection of LaVista Rd. and Oak Grove Rd. Vista Grove is south of Interstate 85; east of Clairmont Rd.; west of the Northlake retail district; and north of both the CSX railroad tracks and North Decatur Rd. Vista Grove technically overlaps the North Decatur census-designated place. Leafmore Creek-Park Hills and Winston Place, both south of LaVista Rd. and west of Pangborn Rd., are the two primary neighborhoods that fall within the overlap area. Portions of zip code 30345 and 30033 fall within LaVista Grove. The Interstate 85 south access road is not considered part of Vista Grove.