The summer range of the Swamp Sparrow includes the eastern half of the Northern United States south to Missouri, Ohio, and Maryland, and a large portion of Canada from Newfoundland west to the Rockies.

The winter populations concentrate in the eastern United States from Texas, the Gulf Coast, and Florida north to Iowa, the southern Great Lakes, and Massachusetts.(McPeek 1994)

Biogeographic Regions: nearctic (Native )