Grundy County, Illinois
Latest: 2024
Safe Republican — shifted 3.8pp toward Republicans in 2024 — 40 presidential elections on record
Race & ancestry
| Group | % |
|---|---|
▶White (Non-Hispanic)(13) | 82.4% |
▶Hispanic / Latino(9) | 12.0% |
▶Black / African American(8) | 2.3% |
▶Asian(5) | 0.6% |
▶Middle Eastern / North African(3) | 0.2% |
▶Native American / Alaska Native(2) | 0.1% |
Multiracial / Other | 2.7% |
Religious adherence
| Tradition | % Pop | % Adherents |
|---|---|---|
| Catholic | 18.9% | 52.3% |
| Evangelical Protestant | 8.6% | 23.7% |
| Mainline Protestant | 7.0% | 19.5% |
| Other | 1.7% | 4.6% |
| LDS (Mormon) | 1.0% | 2.6% |
| Non-religious | 63.9% | — |
Presidential results
| Year | Result |
|---|---|
| 2024 | Trump+29.5 |
| 2020 | Trump+25.8 |
| 2016 | Trump+23.2 |
| 2012 | Romney+8.9 |
| 2008 | Obama+1.7 |
| 2004 | Bush+13.8 |
| 2000 | Bush+7.2 |
| 1996 | Clinton+3.9 |
| 1992 | Bush+1.4 |
Grundy, Illinois is a county that has a population of 53,219. In the 2024 presidential election, it voted Republican with a margin of R+29.5. Akashic Edge tracks 40 presidential elections here, dating back to 1868.
| Year | Dem % | Rep % | Margin | Swing |
|---|---|---|---|---|
| 2024 | 34.4% | 63.9% | R+29.5 | R+3.8 |
| 2020 | 36.0% | 61.8% | R+25.8 | R+2.6 |
| 2016 | 34.7% | 57.9% | R+23.2 | R+14.3 |
| 2012 | 44.3% | 53.2% | R+8.9 | R+10.6 |
| 2008 | 49.8% | 48.1% | D+1.7 | D+15.5 |
| 2004 | 42.7% | 56.5% | R+13.8 | R+6.5 |
| 2000 | 45.6% | 52.8% | R+7.2 | R+11.2 |
| 1996 | 45.4% | 41.5% | D+3.9 | D+5.3 |
| 1992 | 37.6% | 39.0% | R+1.4 | D+21.0 |
| 1988 | 38.5% | 60.9% | R+22.4 | D+12.0 |
| 1984 | 32.6% | 67.0% | R+34.4 | R+0.8 |
| 1980 | 30.1% | 63.6% | R+33.5 | R+18.0 |
| 1976 | 41.9% | 57.4% | R+15.5 | D+26.1 |
| 1972 | 29.0% | 70.7% | R+41.7 | R+12.8 |
| 1968 | 30.7% | 59.5% | R+28.8 | R+26.3 |
| 1964 | 48.7% | 51.3% | R+2.6 | D+21.2 |
| 1960 | 38.1% | 61.9% | R+23.8 | D+25.2 |
| 1956 | 25.5% | 74.5% | R+49.0 | R+8.6 |
| 1952 | 29.8% | 70.1% | R+40.4 | R+11.1 |
| 1948 | 35.2% | 64.4% | R+29.2 | — |
What defines Grundy?
Grundy has been trending Republican — 21pp redder over the last 4 presidential cycles.
County in State Context
Current Illinois Polling
Contextual statewide polling for Illinois. County pages stay rooted in county returns, but live statewide polling helps frame the current cycle.
2026 Illinois Senate Democratic Primary
Raja Krishnamoorthi leads at 32.1%
7 pollsMedium
Field Preview
Ask the Historian
Explore this county's political evolution with the Historian
Key Insights
High-confidence patterns distilled from this geography's election history.
- Latest election (2024) was a Republican landslide with a 29.5% margin
- The 2008 election was decided by just 1.7 points — razor-thin
- Won by both parties in recent history — Democrats most recently in 2008, Republicans in 2024
Located In
Grundy sits inside these higher-level geographies.