Belgrade is a town in Kennebec County, Maine, United States. Its population was 3,250 at the 2020 census. However, its population approximately doubles during the summer months as part-year residents return to seasonal camps on the shores of Great Pond, Long Pond and Messalonskee Lake. Belgrade includes the villages of North Belgrade, Belgrade Depot and Belgrade Lakes. It is included in the Augusta, Maine micropolitan New England City and Town Area.