Johnson County, Illinois
Precinct data
Results by precinct
33 precincts · 6,136 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -GOREVILLE 1-1GOREVILLE 1-1 | 176 | 720 | 17 | 913 | 19.3% | 78.9% | R+59.6 |
|---|---|---|---|---|---|---|---|
| Precinct -VIENNA 2-1VIENNA 2-1 | 118 | 408 | 9 | 535 | 22.1% | 76.3% | R+54.2 |
| Precinct -BLOOMFIELD-1BLOOMFIELD-1 | 80 | 415 | 6 | 501 | 16.0% | 82.8% | R+66.9 |
| Precinct -TUNNEL HILL-1TUNNEL HILL-1 | 130 | 362 | 7 | 499 | 26.1% | 72.5% | R+46.5 |
| Precinct -LAKE 1-1LAKE 1-1 | 137 | 333 | 6 | 476 | 28.8% | 70.0% | R+41.2 |
| Precinct -ELVIRA-1ELVIRA-1 | 68 | 319 | 1 | 388 | 17.5% | 82.2% | R+64.7 |
| Precinct -SIMPSON-1SIMPSON-1 | 62 | 309 | 12 | 383 | 16.2% | 80.7% | R+64.5 |
| Precinct -GRANTSBURG-1GRANTSBURG-1 | 51 | 304 | 6 | 361 | 14.1% | 84.2% | R+70.1 |
| Precinct -OZARK-1OZARK-1 | 38 | 291 | 6 | 335 | 11.3% | 86.9% | R+75.5 |
| Precinct -VIENNA 1-1VIENNA 1-1 | 81 | 232 | 6 | 319 | 25.4% | 72.7% | R+47.3 |
| Precinct -GOREVILLE 2-1GOREVILLE 2-1 | 52 | 234 | 5 | 291 | 17.9% | 80.4% | R+62.5 |
| Precinct -CACHE-1CACHE-1 | 46 | 238 | 3 | 287 | 16.0% | 82.9% | R+66.9 |
| Precinct -VIENNA 3-1VIENNA 3-1 | 45 | 200 | 7 | 252 | 17.9% | 79.4% | R+61.5 |
| Precinct -BURNSIDE-1BURNSIDE-1 | 47 | 195 | 1 | 243 | 19.3% | 80.2% | R+60.9 |
| Precinct -LAKE 2-1LAKE 2-1 | 87 | 137 | 5 | 229 | 38.0% | 59.8% | R+21.8 |
| Precinct -BELKNAP-1BELKNAP-1 | 22 | 101 | 1 | 124 | 17.7% | 81.5% | R+63.7 |
| BELKNAP Voting District17_17087BE01 | 0 | 0 | 0 | 0 | — | — | Even |
| BLOOMFIELD Voting District17_17087BL01 | 0 | 0 | 0 | 0 | — | — | Even |
| BURNSIDE Voting District17_17087BU01 | 0 | 0 | 0 | 0 | — | — | Even |
| CACHE Voting District17_17087CA01 | 0 | 0 | 0 | 0 | — | — | Even |
| ELVIRA Voting District17_17087EL01 | 0 | 0 | 0 | 0 | — | — | Even |
| GOREVILLE 1 Voting District17_17087GO01 | 0 | 0 | 0 | 0 | — | — | Even |
| GOREVILLE 2 Voting District17_17087GO02 | 0 | 0 | 0 | 0 | — | — | Even |
| GRANTSBURG 1 Voting District17_17087GR01 | 0 | 0 | 0 | 0 | — | — | Even |
| GRANTSBURG 2 Voting District17_17087GR02 | 0 | 0 | 0 | 0 | — | — | Even |
| LAKE 1 Voting District17_17087LA01 | 0 | 0 | 0 | 0 | — | — | Even |
| LAKE 2 Voting District17_17087LA02 | 0 | 0 | 0 | 0 | — | — | Even |
| OZARK Voting District17_17087OZ01 | 0 | 0 | 0 | 0 | — | — | Even |
| SIMPSON Voting District17_17087SI01 | 0 | 0 | 0 | 0 | — | — | Even |
| TUNNEL HILL Voting District17_17087TH01 | 0 | 0 | 0 | 0 | — | — | Even |
| VIENNA 1 Voting District17_17087VI01 | 0 | 0 | 0 | 0 | — | — | Even |
| VIENNA 2 Voting District17_17087VI02 | 0 | 0 | 0 | 0 | — | — | Even |
| VIENNA 3 Voting District17_17087VI03 | 0 | 0 | 0 | 0 | — | — | Even |
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | −27.8% |
| 1896 | −17.2% |
| 1900 | −20.4% |
| 1904 | −35.7% |
| 1908 | −27.9% |
| 1912 | −2.5% |
| 1916 | −27.8% |
| 1920 | −43.8% |
| 1924 | −26.0% |
| 1928 | −42.3% |
| 1932 | −0.8% |
| 1936 | −17.2% |
| 1940 | −25.8% |
| 1944 | −36.7% |
| 1948 | −29.4% |
| 1952 | −34.6% |
| 1956 | −31.5% |
| 1960 | −32.5% |
| 1964 | −11.2% |
| 1968 | −31.8% |
| 1972 | −37.2% |
| 1976 | −5.1% |
| 1980 | −33.0% |
| 1984 | −35.0% |
| 1988 | −19.7% |
| 1992 | +3.2% |
| 1996 | −4.7% |
| 2000 | −25.3% |
| 2004 | −37.2% |
| 2008 | −34.6% |
| 2012 | −42.0% |
| 2016 | −57.6% |
| 2020 | −58.6% |
| 2024 | −58.3% |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2022 | R | 21.9%1,052 | 76.7%3,690 | 4,813 |
| 2020 | R | 24.6%1,559 | 73.0%4,626 | 6,333 |
Registered voters
Total registered voters, over time
| Year | Total registered |
|---|---|
| 2016 | 8,825 |
| 2018 | 9,129 |
| 2020 | 9,029 |
| 2022 | 8,118 |
| 2024 | 8,218 |
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
+53 net domestic migration · 2025
Net +248 over 2011–2025 · gain loss
Arrivals reported $57,253 in average income, against $69,533 for residents who stayed — 18% lower. (IRS SOI, 2022–23)
The places arrivals came from lean R+39.8 on average — 19 points more Democratic-leaning than Johnson County, IL itself (R+58.3).
Where arrivals came from lean of each source
- Williamson County, IL67R+38.7
- Union County, IL21R+43.2
Where departures went households, 2022–23
- Williamson County, IL72
- Union County, IL23
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 | +244 |
| 2012 | +11 |
| 2013 | +23 |
| 2014 | +21 |
| 2015 | −85 |
| 2016 | −317 |
| 2017 | −27 |
| 2018 | +62 |
| 2019 | +38 |
| 2021 | +226 |
| 2022 | −14 |
| 2023 | +6 |
| 2024 | +7 |
| 2025 | +53 |
Tucked into the Shawnee Hills at Illinois's southern tip, Johnson County delivered a 58-point Republican presidential margin in 2024, reflecting the deep rural conservatism that defines the state's southernmost counties.
Across the recorded series it reached a Democratic high of 3.2 points in 1992 and a Republican high of 58.6 points in 2020. The 2024 margin was 58.3 points.
A population of 13,376, a 80% non-Hispanic-white share, and a median household income of $62,528 describe the county. The county's voting pattern over the last decade is most similar to that of DeKalb County and Doddridge 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 →
Johnson County, Illinois. Akashic. https://akashic.app/county/17087/. Accessed May 20, 2026. License: CC BY 4.0.