N/A of the households in Jefferson County, IA reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
Jefferson County, IA borders Davis County, IA, Henry County, IA, Keokuk County, IA, Van Buren County, IA, Wapello County, IA, and Washington County, IA.