Sangamon County, Illinois: Democratic loyalist county. In 2024, voted R+5%. Republican peak: R+32 in 1972.
Key facts
- 2024 presidential margin
- R+5MIT Election Lab
- Political archetype
- Democratic loyalistAkashic typology
- Population
- 194,9472024 5-year
- Median household income
- $75,3572024 5-year
- White (non-Hispanic)
- 78.1%2024 5-year
- Black
- 12.7%2024 5-year
- Hispanic / Latino
- 2.9%2024 5-year
- Peak Democratic margin
- D+22 in 1912MIT Election Lab
- Peak Republican margin
- R+32 in 1972MIT Election Lab
- Most similar
- Yamhill County, OR · similarity 0.95
2024 results by precinct
2024 precinct map of Sangamon CountyPrecinct-level 2024 presidential results for Sangamon County, with each precinct boundary colored by Democratic-vs-Republican margin.
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Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 46,074 | 50,979 | 99,171 | ||
| R | 48,917 | 53,485 | 105,142 | ||
| R | 40,907 | 49,944 | 98,373 | ||
| R | 42,107 | 50,225 | 94,297 | ||
| D | 51,300 | 46,945 | 99,828 | ||
| R | 38,630 | 55,904 | 95,375 | ||
| R | 38,414 | 50,374 | 91,485 | ||
| R | 38,902 | 42,174 | 88,105 | ||
| D | 40,052 | 39,641 | 96,860 | ||
| R | 37,729 | 50,175 | 88,403 | ||
| R | 34,059 | 54,086 | 88,523 | ||
| R | 29,354 | 49,372 | 85,200 | ||
| R | 38,017 | 43,309 | 82,910 | ||
| R | 25,720 | 50,458 | 77,075 | ||
| R | 29,542 | 36,510 | 72,996 | ||
| D | 43,073 | 33,077 | 76,166 | ||
| R | 35,793 | 41,483 | 77,335 | ||
| R | 28,949 | 42,951 | 71,935 | ||
| R | 33,526 | 39,392 | 72,968 | ||
| R | 29,196 | 33,714 | 63,273 | ||
| R | 28,713 | 32,871 | 61,745 | ||
| R | 31,943 | 35,464 | 67,628 | ||
| D | 32,281 | 29,562 | 63,670 | ||
| D | 32,745 | 26,856 | 60,643 | ||
| R | 21,026 | 31,957 | 53,271 | ||
| R | 12,640 | 23,443 | 45,446 | ||
| R | 11,000 | 21,820 | 36,723 | ||
| R | 17,958 | 20,900 | 40,435 | ||
| D | 8,406 | 3,994 | 19,897 | ||
| R | 9,351 | 10,422 | 20,934 | ||
| R | 7,571 | 10,638 | 19,906 | ||
| R | 9,499 | 9,769 | 19,690 | ||
| R | 8,582 | 8,998 | 17,934 | ||
| D | 7,665 | 6,009 | 14,634 | ||
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Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
20.7%
English
12.5%
Irish
12.4%
American
5.0%
Italian
4.5%
Polish
2.0%
Scottish
1.9%
African American
10.2%
Multiple ancestry combinations reported; no single grouping above 1%.
American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
Age distribution by sex
Median age: 41.0 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$75,357
Sangamon County ranks in the top 25% of US counties.
Sangamon County$75,357
Illinois$83,390
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
13.1%
Children face moderate poverty.
Children under 1817.8%
Working age (18–64)12.3%
Seniors (65+)7.5%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
95.2%
speak English only
Spanish1.7%
Other Indo-European1.3%
Asian & Pacific Islander1.3%
Other languages0.5%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 52.8% of residents not counted as adherents by any reporting body.
Sangamon County seats Illinois state government in Springfield, yet its presidential margins have drifted steadily rightward over the past decade, flipping from a Democratic lean to a 5-point Republican advantage by 2024.
The Democratic margin in Sangamon County reached its widest at twenty-two points in 1912. The margin in 2024 was five points — a notable narrowing.
Its loyalty is rooted in its place. Median household income of $75,357, a 78% non-Hispanic-white share, and a population of 194,947 together describe a community whose political habits are deeply settled. The county's voting pattern over the last decade is most similar to that of Yamhill County and Polk County.
Most similar counties
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Sangamon County, Illinois — The Long Memory. Akashic Intelligence — The Long Memory. https://akashic.app/county/17167/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Frequently asked questions
How did Sangamon County, Illinois vote in 2024?
In 2024, Sangamon County, Illinois voted Republican by 4.9 points (R+5), carried by the Republican candidate. Out of 99,171 votes cast, 46,074 went Democratic and 50,979 went Republican.
What is Sangamon County, Illinois's political archetype?
Akashic classifies Sangamon County, Illinois as a "Democratic loyalist" county based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the county has voted Democratic 7 times, Republican 27 times, and other 0 times.
When did Sangamon County, Illinois last vote Democratic?
The most recent presidential election in which Sangamon County, Illinois voted Democratic was 2008.
How many people live in Sangamon County, Illinois?
Sangamon County, Illinois has a population of 194,947 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Sangamon County, Illinois?
Median household income in Sangamon County, Illinois is $75,357 — below the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Sangamon County, Illinois?
Akashic tracks 38 presidential elections in Sangamon County, Illinois from 1876 to 2024. Of those, 7 went Democratic and 27 went Republican. The county's archetype — "Democratic loyalist" — captures the overall trajectory of that voting record.