Winnebago County, IL
IL · Presidential Elections 1892–2024
Winnebago County, IL (Illinois) voted D+0.6 for Kamala Harris (Democrat) in the 2024 presidential election, with Harris receiving 59,942 votes (49.4%) to 59,257 (48.83%) for Trump.
This represents a R+1.9% swing toward Republicans compared to 2020. Winnebago County is classified as a competitive Democratic county. Winnebago County has voted Democratic in every presidential election since 2008. The county has a population of approximately 283,292.
Quick Stats
Demographics
Community Profile
Religious Composition
Source: Religion Census 2020Ancestry Groups
Source: Census ACSTop reported ancestry groups (compared to national average).
Age Distribution
Employment by Industry
Census ACSPresidential Elections
Presidential Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2024 | 49.4%(59,942) | 48.8%(59,257) | D+0.6 | R+1.9 |
| 2020 | 50.0%(64,056) | 47.5%(60,861) | D+2.5 | D+2.4 |
| 2016 | 46.4%(55,713) | 46.3%(55,624) | D+0.1 | R+5.4 |
| 2012 | 51.7%(61,732) | 46.2%(55,138) | D+5.5 | R+7.3 |
| 2008 | 55.6%(70,034) | 42.8%(53,886) | D+12.8 | D+13.7 |
| 2004 | 49.2%(59,740) | 50.1%(60,782) | R+0.9 | D+0.8 |
| 2000 | 47.6%(51,981) | 49.2%(53,816) | R+1.7 | R+3.5 |
| 1996 | 46.3%(46,264) | 44.5%(44,479) | D+1.8 | R+3.6 |
| 1992 | 43.0%(48,298) | 37.6%(42,221) | D+5.4 | D+15.7 |
| 1988 | 44.6%(45,280) | 54.9%(55,699) | R+10.3 | D+7.6 |
Source: Official state election returns via MIT Election Data + Science Lab
Presidential Margin Trend
Winnebago County, IL • 1892–2024
Senate Elections
Senate Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2022 | 50.4%(43,740) | 49.6%(42,972) | D+0.9 | D+0.3 |
| 2020 | 48.4%(61,182) | 47.8%(60,473) | D+0.6 | D+4.7 |
| 2016 | 44.6%(52,730) | 48.8%(57,643) | R+4.2 | D+1.9 |
| 2014 | 44.9%(35,436) | 51.0%(40,239) | R+6.1 | D+13.2 |
| 2010 | 36.3%(29,144) | 55.5%(44,622) | R+19.3 | R+44.0 |
| 2008 | 59.8%(73,518) | 35.0%(43,066) | D+24.8 | R+4.1 |
| 2004 | 62.9%(74,911) | 34.0%(40,470) | D+28.9 | D+16.0 |
| 2002 | 55.4%(42,442) | 42.4%(32,520) | D+12.9 | D+42.4 |
| 1998 | 33.7%(23,795) | 63.2%(44,538) | R+29.4 | R+22.3 |
| 1996 | 44.6%(43,987) | 51.7%(50,985) | R+7.1 | R+8.5 |
Source: Official state election returns via MIT Election Data + Science Lab
Governor Elections
Governor Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2022 | 47.5%(41,987) | 49.2%(43,492) | R+1.7 | R+4.1 |
| 2018 | 45.7%(43,440) | 43.3%(41,156) | D+2.4 | D+20.3 |
| 2014 | 38.9%(30,691) | 56.8%(44,785) | R+17.9 | D+4.2 |
| 2010 | 34.7%(28,398) | 56.8%(46,492) | R+22.1 | R+30.1 |
| 2006 | 41.5%(32,383) | 33.5%(26,147) | D+8.0 | D+7.6 |
| 2002 | 48.0%(37,060) | 47.6%(36,798) | D+0.3 | D+26.6 |
| 1998 | 36.0%(25,340) | 62.3%(43,805) | R+26.2 | D+20.3 |
| 1994 | 24.9%(17,087) | 71.4%(49,053) | R+46.5 | R+31.3 |
| 1990 | 41.9%(29,990) | 57.1%(40,910) | R+15.3 | D+38.5 |
| 1986 | 5.8%(3,669) | 59.5%(37,805) | R+53.8 | R+52.2 |
Source: Official state election returns via MIT Election Data + Science Lab