Jefferson County, Wisconsin
Precinct data
Results by precinct
34 precincts · 50,146 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -CITY OF FORT ATKINSON WARDS 1-13CITY OF FORT ATKINSON WARDS 1-13 | 3,530 | 3,138 | 95 | 6,763 | 52.2% | 46.4% | D+5.8 |
|---|---|---|---|---|---|---|---|
| Precinct -CITY OF JEFFERSON WARDS 1-10CITY OF JEFFERSON WARDS 1-10 | 1,937 | 2,172 | 84 | 4,193 | 46.2% | 51.8% | R+5.6 |
| Precinct -CITY OF LAKE MILLS WARDS 1-8CITY OF LAKE MILLS WARDS 1-8 | 2,173 | 1,855 | 66 | 4,094 | 53.1% | 45.3% | D+7.8 |
| Precinct -TOWN OF IXONIA WARDS 1-6TOWN OF IXONIA WARDS 1-6 | 887 | 2,289 | 52 | 3,228 | 27.5% | 70.9% | R+43.4 |
| Precinct -TOWN OF KOSHKONONG WARDS 1-6TOWN OF KOSHKONONG WARDS 1-6 | 889 | 1,466 | 51 | 2,406 | 36.9% | 60.9% | R+24.0 |
| Precinct -TOWN OF OAKLAND WARDS 1-4TOWN OF OAKLAND WARDS 1-4 | 1,178 | 1,031 | 28 | 2,237 | 52.7% | 46.1% | D+6.6 |
| Precinct -CITY OF WATERLOO WARDS 1-5CITY OF WATERLOO WARDS 1-5 | 947 | 993 | 17 | 1,957 | 48.4% | 50.7% | R+2.4 |
| Precinct -VILLAGE OF JOHNSON CREEK WARDS 1-4VILLAGE OF JOHNSON CREEK WARDS 1-4 | 755 | 1,133 | 38 | 1,926 | 39.2% | 58.8% | R+19.6 |
| Precinct -CITY OF WATERTOWN WARDS 20-22CITY OF WATERTOWN WARDS 20-22 | 527 | 1,093 | 22 | 1,642 | 32.1% | 66.6% | R+34.5 |
| Precinct -TOWN OF LAKE MILLS WARDS 1-3TOWN OF LAKE MILLS WARDS 1-3 | 804 | 748 | 26 | 1,578 | 51.0% | 47.4% | D+3.5 |
| Precinct -TOWN OF SULLIVAN WARDS 1-4TOWN OF SULLIVAN WARDS 1-4 | 425 | 1,130 | 16 | 1,571 | 27.1% | 71.9% | R+44.9 |
| Precinct -CITY OF WATERTOWN WARDS 16-17CITY OF WATERTOWN WARDS 16-17 | 573 | 807 | 38 | 1,418 | 40.4% | 56.9% | R+16.5 |
| Precinct -TOWN OF CONCORD WARDS 1-2TOWN OF CONCORD WARDS 1-2 | 403 | 960 | 18 | 1,381 | 29.2% | 69.5% | R+40.3 |
| Precinct -TOWN OF WATERTOWN WARDS 1-2TOWN OF WATERTOWN WARDS 1-2 | 363 | 978 | 12 | 1,353 | 26.8% | 72.3% | R+45.5 |
| Precinct -CITY OF WATERTOWN WARDS 18-19CITY OF WATERTOWN WARDS 18-19 | 511 | 801 | 24 | 1,336 | 38.2% | 60.0% | R+21.7 |
| Precinct -CITY OF WATERTOWN WARDS 11-13CITY OF WATERTOWN WARDS 11-13 | 393 | 806 | 22 | 1,221 | 32.2% | 66.0% | R+33.8 |
| Precinct -CITY OF WATERTOWN WARDS 9-10CITY OF WATERTOWN WARDS 9-10 | 399 | 627 | 23 | 1,049 | 38.0% | 59.8% | R+21.7 |
| Precinct -VILLAGE OF PALMYRA WARDS 1-2VILLAGE OF PALMYRA WARDS 1-2 | 304 | 698 | 20 | 1,022 | 29.7% | 68.3% | R+38.6 |
| Precinct -TOWN OF FARMINGTON WARDS 1-3TOWN OF FARMINGTON WARDS 1-3 | 287 | 694 | 10 | 991 | 29.0% | 70.0% | R+41.1 |
| Precinct -TOWN OF JEFFERSON WARDS 1-2TOWN OF JEFFERSON WARDS 1-2 | 287 | 606 | 12 | 905 | 31.7% | 67.0% | R+35.2 |
| Precinct -CITY OF WATERTOWN WARDS 14-15CITY OF WATERTOWN WARDS 14-15 | 327 | 543 | 29 | 899 | 36.4% | 60.4% | R+24.0 |
| Precinct -TOWN OF PALMYRA WARDS 1-2TOWN OF PALMYRA WARDS 1-2 | 260 | 587 | 11 | 858 | 30.3% | 68.4% | R+38.1 |
| Precinct -TOWN OF MILFORD WARDS 1-2TOWN OF MILFORD WARDS 1-2 | 285 | 457 | 9 | 751 | 37.9% | 60.9% | R+22.9 |
| Precinct -TOWN OF HEBRON WARDS 1-2TOWN OF HEBRON WARDS 1-2 | 229 | 493 | 12 | 734 | 31.2% | 67.2% | R+36.0 |
| Precinct -TOWN OF WATERLOO WARD 1TOWN OF WATERLOO WARD 1 | 248 | 374 | 8 | 630 | 39.4% | 59.4% | R+20.0 |
| Precinct -CITY OF WHITEWATER WARDS 11-12CITY OF WHITEWATER WARDS 11-12 | 326 | 276 | 7 | 609 | 53.5% | 45.3% | D+8.2 |
| Precinct -TOWN OF SUMNER WARD 1TOWN OF SUMNER WARD 1 | 219 | 359 | 12 | 590 | 37.1% | 60.8% | R+23.7 |
| Precinct -TOWN OF AZTALAN WARDS 1,3TOWN OF AZTALAN WARDS 1,3 | 226 | 326 | 6 | 558 | 40.5% | 58.4% | R+17.9 |
| Precinct -TOWN OF COLD SPRING WARD 1TOWN OF COLD SPRING WARD 1 | 178 | 314 | 8 | 500 | 35.6% | 62.8% | R+27.2 |
| Precinct -CITY OF WHITEWATER WARD 13CITY OF WHITEWATER WARD 13 | 259 | 212 | 8 | 479 | 54.1% | 44.3% | D+9.8 |
| Precinct -TOWN OF JEFFERSON WARDS 3-4TOWN OF JEFFERSON WARDS 3-4 | 167 | 308 | 3 | 478 | 34.9% | 64.4% | R+29.5 |
| Precinct -VILLAGE OF SULLIVAN WARDS 1-2VILLAGE OF SULLIVAN WARDS 1-2 | 116 | 271 | 3 | 390 | 29.7% | 69.5% | R+39.7 |
| Precinct -TOWN OF AZTALAN WARDS 2,4TOWN OF AZTALAN WARDS 2,4 | 131 | 197 | 11 | 339 | 38.6% | 58.1% | R+19.5 |
| Precinct -VILLAGE OF CAMBRIDGE WARD 1VILLAGE OF CAMBRIDGE WARD 1 | 31 | 29 | 0 | 60 | 51.7% | 48.3% | D+3.3 |
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | +26.2% |
| 1896 | −10.2% |
| 1900 | +4.9% |
| 1904 | +1.4% |
| 1908 | +16.2% |
| 1912 | +35.0% |
| 1916 | −1.8% |
| 1920 | −63.7% |
| 1924 | −21.1% |
| 1928 | −15.3% |
| 1932 | +37.5% |
| 1936 | +32.0% |
| 1940 | −12.9% |
| 1944 | −18.8% |
| 1948 | −6.3% |
| 1952 | −34.0% |
| 1956 | −34.6% |
| 1960 | −23.4% |
| 1964 | +20.6% |
| 1968 | −16.6% |
| 1972 | −21.6% |
| 1976 | −10.2% |
| 1980 | −16.1% |
| 1984 | −24.3% |
| 1988 | −9.5% |
| 1992 | −4.5% |
| 1996 | +1.7% |
| 2000 | −11.1% |
| 2004 | −13.9% |
| 2008 | +0.8% |
| 2012 | −7.6% |
| 2016 | −15.9% |
| 2020 | −15.2% |
| 2024 | −16.3% |
U.S. Senate
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
−145 net domestic migration · 2025
Net −1,213 over 2011–2025 · gain loss
Arrivals reported $59,425 in average income, against $83,876 for residents who stayed — 29% lower. (IRS SOI, 2022–23)
The places arrivals came from lean D+4.7 on average — 21 points more Democratic-leaning than Jefferson County, WI itself (R+16.3).
Where arrivals came from lean of each source
- Dane County, WI431D+51.5
- Waukesha County, WI355R+19.7
- Dodge County, WI268R+32.9
- Walworth County, WI178R+22.2
- Rock County, WI133D+7.3
- Milwaukee County, WI128D+38.4
Where departures went households, 2022–23
- Dane County, WI388
- Waukesha County, WI332
- Dodge County, WI268
- Rock County, WI194
- Walworth County, WI141
- Milwaukee County, WI114
Migration is one input to a place’s political change, not its cause — a shift can also come from residents changing their minds, generational turnover, or turnout. These figures describe the places people moved between; they do not measure how any mover voted.
| Year | Net domestic migration |
|---|---|
| 2011 | −203 |
| 2012 | +185 |
| 2013 | −32 |
| 2014 | −542 |
| 2015 | −101 |
| 2016 | −201 |
| 2017 | +87 |
| 2018 | +188 |
| 2019 | −450 |
| 2021 | −346 |
| 2022 | +72 |
| 2023 | +87 |
| 2024 | +188 |
| 2025 | −145 |
Jefferson County sits in the Glacial Drumlin region southwest of Milwaukee, where a manufacturing and agricultural economy anchors a largely white, working-class electorate. Its 2024 margin of R+16.4 reflects a long drift from the competitive swings it recorded in the early 2000s.
Across the recorded series it reached a Democratic high of 37.5 points in 1932 and a Republican high of 63.7 points in 1920. Between 2020 and 2024 the county moved 1.1 points toward the Republican candidate; the 2024 margin was 16.3 points.
A population of 86,003, a 87% non-Hispanic-white share, and a median household income of $83,750 describe the county. The county's voting pattern over the last decade is most similar to that of Calumet County and Winnebago County.
The counties whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Browse places by community — income, education, race & ethnicity, language — all community cuts →
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Jefferson County, Wisconsin. Akashic. https://akashic.app/county/55055/. Accessed May 20, 2026. License: CC BY 4.0.