Union County, Illinois
Precinct data
Results by precinct
40 precincts · 8,333 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -COBDEN 2COBDEN 2 | 242 | 438 | 24 | 704 | 34.4% | 62.2% | R+27.8 |
|---|---|---|---|---|---|---|---|
| Precinct -LICK CREEKLICK CREEK | 133 | 466 | 16 | 615 | 21.6% | 75.8% | R+54.1 |
| Precinct -JONESBORO 2JONESBORO 2 | 150 | 447 | 10 | 607 | 24.7% | 73.6% | R+48.9 |
| Precinct -COBDEN 1COBDEN 1 | 233 | 352 | 17 | 602 | 38.7% | 58.5% | R+19.8 |
| Precinct -ANNA 3ANNA 3 | 157 | 357 | 15 | 529 | 29.7% | 67.5% | R+37.8 |
| Precinct -JONESBORO 1JONESBORO 1 | 116 | 371 | 5 | 492 | 23.6% | 75.4% | R+51.8 |
| Precinct -ANNA 7ANNA 7 | 116 | 336 | 11 | 463 | 25.1% | 72.6% | R+47.5 |
| Precinct -DONGOLA 1DONGOLA 1 | 93 | 348 | 6 | 447 | 20.8% | 77.9% | R+57.0 |
| Precinct -ANNA 1ANNA 1 | 145 | 279 | 13 | 437 | 33.2% | 63.8% | R+30.7 |
| Precinct -ANNA 4ANNA 4 | 112 | 244 | 9 | 365 | 30.7% | 66.8% | R+36.2 |
| Precinct -STOKESSTOKES | 73 | 288 | 2 | 363 | 20.1% | 79.3% | R+59.2 |
| Precinct -ANNA 5ANNA 5 | 108 | 240 | 14 | 362 | 29.8% | 66.3% | R+36.5 |
| Precinct -ANNA 6ANNA 6 | 114 | 237 | 11 | 362 | 31.5% | 65.5% | R+34.0 |
| Precinct -JONESBORO 3JONESBORO 3 | 92 | 257 | 10 | 359 | 25.6% | 71.6% | R+46.0 |
| Precinct -UNIONUNION | 50 | 291 | 12 | 353 | 14.2% | 82.4% | R+68.3 |
| Precinct -ALTO PASSALTO PASS | 128 | 212 | 12 | 352 | 36.4% | 60.2% | R+23.9 |
| Precinct -ANNA 2ANNA 2 | 94 | 235 | 12 | 341 | 27.6% | 68.9% | R+41.3 |
| Precinct -BALCOMBALCOM | 51 | 173 | 5 | 229 | 22.3% | 75.5% | R+53.3 |
| Precinct -DONGOLA 2DONGOLA 2 | 40 | 177 | 5 | 222 | 18.0% | 79.7% | R+61.7 |
| Precinct -MILL CREEKMILL CREEK | 38 | 89 | 2 | 129 | 29.5% | 69.0% | R+39.5 |
| ALTO PASS Voting District17_1718100115 | 0 | 0 | 0 | 0 | — | — | Even |
| ANNA 1 Voting District17_1718100101 | 0 | 0 | 0 | 0 | — | — | Even |
| ANNA 2 Voting District17_1718100102 | 0 | 0 | 0 | 0 | — | — | Even |
| ANNA 3 Voting District17_1718100103 | 0 | 0 | 0 | 0 | — | — | Even |
| ANNA 4 Voting District17_1718100104 | 0 | 0 | 0 | 0 | — | — | Even |
| ANNA 5 Voting District17_1718100105 | 0 | 0 | 0 | 0 | — | — | Even |
| ANNA 6 Voting District17_1718100106 | 0 | 0 | 0 | 0 | — | — | Even |
| ANNA 7 Voting District17_1718100121 | 0 | 0 | 0 | 0 | — | — | Even |
| BALCOM Voting District17_1718100117 | 0 | 0 | 0 | 0 | — | — | Even |
| COBDEN 1 Voting District17_1718100109 | 0 | 0 | 0 | 0 | — | — | Even |
| COBDEN 2 Voting District17_1718100110 | 0 | 0 | 0 | 0 | — | — | Even |
| DONGOLA 1 Voting District17_1718100111 | 0 | 0 | 0 | 0 | — | — | Even |
| DONGOLA 2 Voting District17_1718100112 | 0 | 0 | 0 | 0 | — | — | Even |
| JONESBORO 1 Voting District17_1718100107 | 0 | 0 | 0 | 0 | — | — | Even |
| JONESBORO 2 Voting District17_1718100108 | 0 | 0 | 0 | 0 | — | — | Even |
| JONESBORO 3 Voting District17_1718100122 | 0 | 0 | 0 | 0 | — | — | Even |
| LICK CREEK Voting District17_1718100119 | 0 | 0 | 0 | 0 | — | — | Even |
| MILL CREEK Voting District17_1718100116 | 0 | 0 | 0 | 0 | — | — | Even |
| STOKES Voting District17_1718100120 | 0 | 0 | 0 | 0 | — | — | Even |
| UNION 1 Voting District17_1718100113 | 0 | 0 | 0 | 0 | — | — | Even |
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | +29.4% |
| 1896 | +23.6% |
| 1900 | +25.9% |
| 1904 | +11.1% |
| 1908 | +22.0% |
| 1912 | +33.1% |
| 1916 | +24.1% |
| 1920 | +7.9% |
| 1924 | +18.3% |
| 1928 | +10.6% |
| 1932 | +36.3% |
| 1936 | +20.0% |
| 1940 | +8.2% |
| 1944 | +3.0% |
| 1948 | +7.3% |
| 1952 | −4.0% |
| 1956 | +1.8% |
| 1960 | −1.3% |
| 1964 | +24.7% |
| 1968 | −3.4% |
| 1972 | −18.9% |
| 1976 | +17.2% |
| 1980 | −6.0% |
| 1984 | −10.6% |
| 1988 | −0.6% |
| 1992 | +18.5% |
| 1996 | +13.3% |
| 2000 | −4.8% |
| 2004 | −17.5% |
| 2008 | −11.9% |
| 2012 | −21.9% |
| 2016 | −39.3% |
| 2020 | −40.2% |
| 2024 | −43.2% |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2022 | R | 33.3%2,319 | 64.8%4,514 | 6,965 |
| 2020 | R | 35.3%3,102 | 62.1%5,465 | 8,797 |
Registered voters
Total registered voters, over time
| Year | Total registered |
|---|---|
| 2016 | 14,982 |
| 2018 | 13,191 |
| 2020 | 12,907 |
| 2022 | 11,889 |
| 2024 | 13,563 |
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
−83 net domestic migration · 2025
Net −968 over 2011–2025 · gain loss
Arrivals reported $49,360 in average income, against $64,612 for residents who stayed — 24% lower. (IRS SOI, 2022–23)
The places arrivals came from lean R+26.3 on average — 17 points more Democratic-leaning than Union County, IL itself (R+43.2).
Where arrivals came from lean of each source
- Jackson County, IL43D+3.5
- Williamson County, IL29R+38.7
- Pulaski County, IL24R+34.2
- Johnson County, IL23R+58.3
Where departures went households, 2022–23
- Jackson County, IL44
- Williamson County, IL40
- Cape Girardeau County, MO22
- Johnson County, IL21
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 | −34 |
| 2012 | −32 |
| 2013 | −23 |
| 2014 | −94 |
| 2015 | −80 |
| 2016 | −172 |
| 2017 | −82 |
| 2018 | −92 |
| 2019 | −129 |
| 2021 | −138 |
| 2022 | −42 |
| 2023 | −16 |
| 2024 | +49 |
| 2025 | −83 |
Union County sits in Illinois's rugged southern tip, where the Shawnee National Forest dominates the landscape and a dwindling rural population has shifted presidential margins decisively rightward over the past two decades, reaching R+43.2 in 2024.
Across the recorded series it reached a Democratic high of 36.3 points in 1932 and a Republican high of 43.2 points in 2024. Between 2020 and 2024 the county moved 3.0 points toward the Republican candidate; the 2024 margin was 43.2 points.
A population of 16,997, a 90% non-Hispanic-white share, and a median household income of $55,728 describe the county. The county's voting pattern over the last decade is most similar to that of Franklin County and Henry 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 →
Union County, Illinois. Akashic. https://akashic.app/county/17181/. Accessed May 20, 2026. License: CC BY 4.0.