Mason County, Illinois
Precinct data
Results by precinct
43 precincts · 6,445 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -MANITO 1MANITO 1 | 162 | 373 | 25 | 560 | 28.9% | 66.6% | R+37.7 |
|---|---|---|---|---|---|---|---|
| Precinct -MANITO 2MANITO 2 | 132 | 357 | 15 | 504 | 26.2% | 70.8% | R+44.6 |
| Precinct -HAVANA 6HAVANA 6 | 111 | 340 | 15 | 466 | 23.8% | 73.0% | R+49.1 |
| Precinct -MASON CITY 3MASON CITY 3 | 128 | 291 | 10 | 429 | 29.8% | 67.8% | R+38.0 |
| Precinct -HAVANA 4HAVANA 4 | 141 | 266 | 16 | 423 | 33.3% | 62.9% | R+29.6 |
| Precinct -BATHBATH | 96 | 290 | 12 | 398 | 24.1% | 72.9% | R+48.7 |
| Precinct -MASON CITY 1MASON CITY 1 | 113 | 274 | 11 | 398 | 28.4% | 68.8% | R+40.5 |
| Precinct -HAVANA 1HAVANA 1 | 123 | 232 | 15 | 370 | 33.2% | 62.7% | R+29.5 |
| Precinct -MASON CITY 2MASON CITY 2 | 112 | 218 | 11 | 341 | 32.8% | 63.9% | R+31.1 |
| Precinct -HAVANA 5HAVANA 5 | 99 | 230 | 9 | 338 | 29.3% | 68.0% | R+38.8 |
| Precinct -QUIVERQUIVER | 107 | 209 | 8 | 324 | 33.0% | 64.5% | R+31.5 |
| Precinct -HAVANA 2HAVANA 2 | 74 | 179 | 13 | 266 | 27.8% | 67.3% | R+39.5 |
| Precinct -HAVANA 3HAVANA 3 | 66 | 189 | 10 | 265 | 24.9% | 71.3% | R+46.4 |
| Precinct -SHERMANSHERMAN | 55 | 181 | 6 | 242 | 22.7% | 74.8% | R+52.1 |
| Precinct -KILBOURNEKILBOURNE | 43 | 186 | 5 | 234 | 18.4% | 79.5% | R+61.1 |
| Precinct -ALLENS GROVEALLENS GROVE | 61 | 164 | 8 | 233 | 26.2% | 70.4% | R+44.2 |
| Precinct -FOREST CITYFOREST CITY | 51 | 157 | 6 | 214 | 23.8% | 73.4% | R+49.5 |
| Precinct -SALT CREEKSALT CREEK | 38 | 93 | 6 | 137 | 27.7% | 67.9% | R+40.1 |
| Precinct -LYNCHBURGLYNCHBURG | 30 | 92 | 4 | 126 | 23.8% | 73.0% | R+49.2 |
| Precinct -CRANE CREEKCRANE CREEK | 13 | 74 | 2 | 89 | 14.6% | 83.1% | R+68.5 |
| Precinct -PENNSYLVANIAPENNSYLVANIA | 18 | 69 | 1 | 88 | 20.5% | 78.4% | R+58.0 |
| ALLENS GROVE 1 Voting District17_17125AG01 | 0 | 0 | 0 | 0 | — | — | Even |
| BATH 1 Voting District17_17125BT01 | 0 | 0 | 0 | 0 | — | — | Even |
| BATH 2 Voting District17_17125BT02 | 0 | 0 | 0 | 0 | — | — | Even |
| CRANE CREEK Voting District17_17125CC01 | 0 | 0 | 0 | 0 | — | — | Even |
| FOREST CITY Voting District17_17125FC01 | 0 | 0 | 0 | 0 | — | — | Even |
| HAVANA 1 Voting District17_17125HV01 | 0 | 0 | 0 | 0 | — | — | Even |
| HAVANA 2 Voting District17_17125HV02 | 0 | 0 | 0 | 0 | — | — | Even |
| HAVANA 3 Voting District17_17125HV03 | 0 | 0 | 0 | 0 | — | — | Even |
| HAVANA 4 Voting District17_17125HV04 | 0 | 0 | 0 | 0 | — | — | Even |
| HAVANA 5 Voting District17_17125HV05 | 0 | 0 | 0 | 0 | — | — | Even |
| HAVANA 6 Voting District17_17125HV06 | 0 | 0 | 0 | 0 | — | — | Even |
| KILBOURNE 1 Voting District17_17125KB01 | 0 | 0 | 0 | 0 | — | — | Even |
| LYNCHBURG Voting District17_17125LB01 | 0 | 0 | 0 | 0 | — | — | Even |
| MANITO 1 Voting District17_17125MA01 | 0 | 0 | 0 | 0 | — | — | Even |
| MANITO 2 Voting District17_17125MA02 | 0 | 0 | 0 | 0 | — | — | Even |
| MASON CITY 1 Voting District17_17125MC01 | 0 | 0 | 0 | 0 | — | — | Even |
| MASON CITY 2 Voting District17_17125MC02 | 0 | 0 | 0 | 0 | — | — | Even |
| MASON CITY 3 Voting District17_17125MC03 | 0 | 0 | 0 | 0 | — | — | Even |
| PENNSYLVANIA Voting District17_17125PN01 | 0 | 0 | 0 | 0 | — | — | Even |
| QUIVER Voting District17_17125QU01 | 0 | 0 | 0 | 0 | — | — | Even |
| SALT CREEK Voting District17_17125SC01 | 0 | 0 | 0 | 0 | — | — | Even |
| SHERMAN Voting District17_17125SH01 | 0 | 0 | 0 | 0 | — | — | Even |
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | +14.8% |
| 1896 | +6.7% |
| 1900 | +10.4% |
| 1904 | +0.2% |
| 1908 | +7.7% |
| 1912 | +29.7% |
| 1916 | +12.0% |
| 1920 | −19.0% |
| 1924 | −14.8% |
| 1928 | −9.8% |
| 1932 | +37.7% |
| 1936 | +21.6% |
| 1940 | −1.4% |
| 1944 | −9.3% |
| 1948 | −0.3% |
| 1952 | −23.9% |
| 1956 | −18.7% |
| 1960 | −6.3% |
| 1964 | +26.3% |
| 1968 | −6.8% |
| 1972 | −25.6% |
| 1976 | +1.3% |
| 1980 | −25.5% |
| 1984 | −10.1% |
| 1988 | −0.3% |
| 1992 | +19.4% |
| 1996 | +14.8% |
| 2000 | −3.2% |
| 2004 | −9.6% |
| 2008 | +5.9% |
| 2012 | −6.3% |
| 2016 | −31.5% |
| 2020 | −39.3% |
| 2024 | −42.2% |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2022 | R | 35.0%1,739 | 63.1%3,135 | 4,967 |
| 2020 | R | 35.8%2,387 | 61.1%4,075 | 6,665 |
Registered voters
Total registered voters, over time
| Year | Total registered |
|---|---|
| 2016 | 10,127 |
| 2018 | 9,901 |
| 2020 | 9,445 |
| 2022 | 9,824 |
| 2024 | 9,535 |
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
+27 net domestic migration · 2025
Net −919 over 2011–2025 · gain loss
Arrivals reported $51,675 in average income, against $68,733 for residents who stayed — 25% lower. (IRS SOI, 2022–23)
The places arrivals came from lean R+24.8 on average — 17 points more Democratic-leaning than Mason County, IL itself (R+42.2).
Where arrivals came from lean of each source
- Tazewell County, IL85R+26.6
- Logan County, IL26R+41.5
- Peoria County, IL20D+4.6
Where departures went households, 2022–23
- Tazewell County, IL83
- Fulton County, IL30
- Logan County, IL30
- Sangamon County, IL23
- Peoria 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 | −130 |
| 2012 | −97 |
| 2013 | −103 |
| 2014 | −8 |
| 2015 | −183 |
| 2016 | −123 |
| 2017 | +38 |
| 2018 | −77 |
| 2019 | −128 |
| 2021 | −86 |
| 2022 | −1 |
| 2023 | −57 |
| 2024 | +9 |
| 2025 | +27 |
Mason County's population of roughly 16,000 sits along the Illinois River bottomlands, and its electorate has shifted decisively rightward over successive presidential cycles, posting a 42-point Republican margin in 2024.
Across the recorded series it reached a Democratic high of 37.7 points in 1932 and a Republican high of 42.2 points in 2024. Between 2020 and 2024 the county moved 2.9 points toward the Republican candidate; the 2024 margin was 42.2 points.
A population of 12,745, a 94% non-Hispanic-white share, and a median household income of $62,845 describe the county. The county's voting pattern over the last decade is most similar to that of Vermillion County and Starke 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 →
Mason County, Illinois. Akashic. https://akashic.app/county/17125/. Accessed May 20, 2026. License: CC BY 4.0.