Jefferson County, Wisconsin Cities (2024)

Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)

City
Rank
2024 Pop.
2020 Pop.
Change
Density (/mi²)
Area (mi²)
Type
Fort Atkinson112,27312,581-0.62%2,0995.8City
Jefferson27,5937,805-0.69%1,3025.8City
Lake Mills36,7256,2311.86%1,6104.2City
Waterloo43,6503,4921.08%9623.8City
Johnson Creek53,4773,3311.05%1,1483.0Village
Ixonia62,1371,8561.71%5873.6CDP
Palmyra71,6811,729-0.71%7342.3Village
Sullivan8639651-0.47%5641.1Village
Rome9564647-1.57%1523.7CDP
Hebron103573172.59%1452.5CDP
Helenville11165245-3.51%2980.6CDP

Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.

What is the largest city in Jefferson County, Wisconsin?

Fort Atkinson is the largest city in Jefferson County.

What is the smallest city in Jefferson County, Wisconsin?

Helenville is the smallest city in Jefferson County.

How many cities are in Jefferson County?

There are 11 cities in Jefferson County, Wisconsin.

Frequently Asked Questions