USA Votes Data Lab Newsroom

County twins · 77.7% profile similarity

Jefferson County, COvs.Waukesha County, WI

Waukesha County reports the higher turnout: 90.3% versus 76.5% in Jefferson County.

Population579,377411,762
Median household income$110,656$106,076
Bachelor's degree or higher52.0%48.9%
Poverty6.7%5.2%
Foreign-born6.3%5.5%
No vehicle4.0%3.5%

Administrative contrast

Where the election systems separate

Registered-voter turnout76.5%90.3%
Mail-ballot rejection rate0.82%0.55%
Polling places per 10,000 voters0.9%3.2%
Provisional-ballot acceptance rate30.3%18.2%

Measures come from reporting 2024 EAVS jurisdictions. Missing fields remain missing. A difference describes administration and coverage; it does not establish cause or wrongdoing.

Mail-ballot path

Jefferson County

Transmitted
438,562
Returned
341,717
Rejected
2,814

Mail-ballot path

Waukesha County

Transmitted
54,253
Returned
50,941
Rejected
280