The community is in western Kosciusko County, surrounding the natural water body of Hoffman Lake. It is bordered to the south by
U.S. Route 30, which leads east to
Warsaw, the
county seat, and northwest to
Plymouth. Hoffman Lake is bordered to the southeast, across US 30, by the unincorporated community of
Atwood. According to the
U.S. Census Bureau, the Hoffman Lake CDP has a total area of , of which are land and , or 30.72%, are water. The lake drains at its south end into Robinson Ditch, which flows southwest to the
Tippecanoe River, part of the
Wabash River watershed. ==Demographics==