v t e Municipalities and communities of Jefferson County, Wisconsin, United States
County seat: Jefferson
Cities	Fort Atkinson Jefferson Lake Mills Waterloo Watertown‡ Whitewater‡
Villages	Cambridge‡ Johnson Creek Lac La Belle‡ Palmyra Sullivan
Towns	Aztalan Cold Spring Concord Farmington Hebron Ixonia Jefferson Koshkonong Lake Mills Milford Oakland Palmyra Sullivan Sumner Waterloo Watertown
CDPs	Hebron Helenville Ixonia Lake Koshkonong Lake Ripley Rome
Unincorporated communities	Aztalan Blackhawk Island Breezy Knoll Busseyville Carcajou Cold Spring Concord Ebenezer Farmington Glenn Oaks Beach Grellton Heath Mills Hoopers Mill Hubbleton Koshkonong‡ Koshkonong Manor Koshkonong Mounds Kroghville Lake Lac La Belle London‡ Milford North Shore Oak Hill Oakland Pipersville Portland‡ Slabtown Sylvan Mounds Vinnie Ha Ha
Footnotes	‡This populated place also has portions in an adjacent county or counties
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