USA Votes Data Lab Newsroom

County twins · 80.6% profile similarity

Pima County, AZvs.Jefferson County, KY

Jefferson County reports the higher polling-place density: 6.3% versus 2.4% in Pima County.

Population1,060,490783,022
Median household income$70,315$69,866
Bachelor's degree or higher36.8%37.0%
Poverty14.3%14.3%
Foreign-born11.8%10.0%
No vehicle7.1%8.8%

Administrative contrast

Where the election systems separate

Registered-voter turnout76.7%55.5%
Mail-ballot rejection rate2.07%2.78%
Polling places per 10,000 voters2.4%6.3%
Provisional-ballot acceptance rate51.9%54.0%

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

Pima County

Transmitted
542,653
Returned
451,741
Rejected
9,332

Mail-ballot path

Jefferson County

Transmitted
22,782
Returned
20,165
Rejected
561