Piatt County, Illinois: Republican loyalist county. In 2024, voted R+31%. Republican peak: R+40 in 1928.
Key facts
- 2024 presidential margin
- R+31MIT Election Lab
- Political archetype
- Republican loyalistAkashic typology
- Population
- 16,6952024 5-year
- Median household income
- $94,8112024 5-year
- White (non-Hispanic)
- 95.0%2024 5-year
- Black
- 1.4%2024 5-year
- Hispanic / Latino
- 1.6%2024 5-year
- Peak Democratic margin
- D+14 in 1932MIT Election Lab
- Peak Republican margin
- R+40 in 1928MIT Election Lab
- Most similar
- Warrick County, IN · similarity 0.99
2024 results by precinct
2024 precinct map of Piatt CountyPrecinct-level 2024 presidential results for Piatt 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 | 3,204 | 6,104 | 9,508 | ||
| R | 3,329 | 6,248 | 9,851 | ||
| R | 2,645 | 5,634 | 9,060 | ||
| R | 3,090 | 5,413 | 8,742 | ||
| R | 3,859 | 4,991 | 8,999 | ||
| R | 3,124 | 5,392 | 8,586 | ||
| R | 3,488 | 4,619 | 8,385 | ||
| D | 3,274 | 3,265 | 7,412 | ||
| D | 3,520 | 3,076 | 8,447 | ||
| R | 3,099 | 4,137 | 7,277 | ||
| R | 2,840 | 5,000 | 7,879 | ||
| R | 2,421 | 4,867 | 7,818 | ||
| R | 3,509 | 4,442 | 8,020 | ||
| R | 2,394 | 5,057 | 7,468 | ||
| R | 2,447 | 3,973 | 7,059 | ||
| D | 3,897 | 3,141 | 7,038 | ||
| R | 2,889 | 4,506 | 7,399 | ||
| R | 2,356 | 4,622 | 6,979 | ||
| R | 2,220 | 4,701 | 6,932 | ||
| R | 2,361 | 3,646 | 6,064 | ||
| R | 2,641 | 3,912 | 6,588 | ||
| R | 3,564 | 4,564 | 8,159 | ||
| D | 4,084 | 3,931 | 8,061 | ||
| D | 4,200 | 3,179 | 7,443 | ||
| R | 1,959 | 4,565 | 6,557 | ||
| R | 1,733 | 3,799 | 5,907 | ||
| R | 1,903 | 4,283 | 6,284 | ||
| R | 3,028 | 4,012 | 7,226 | ||
| D | 1,417 | 1,064 | 3,745 | ||
| R | 1,530 | 2,349 | 4,053 | ||
| R | 1,334 | 2,515 | 3,977 | ||
| R | 1,905 | 2,648 | 4,620 | ||
| R | 1,958 | 2,579 | 4,600 | ||
| R | 1,896 | 2,138 | 4,186 | ||
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Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
23.5%
English
17.3%
Irish
13.8%
American
5.9%
Scottish
2.3%
Italian
1.6%
Polish
1.5%
African American
1.1%
Multiple ancestry combinations reported; no single grouping above 1%.
Sample size too small to break out by ancestry reliably.
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: 42.8 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
$94,811
Piatt County ranks in the top 5% of US counties.
Piatt County$94,811
Illinois$83,390
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
6.1%
Child poverty is below the national average.
Children under 186.7%
Working age (18–64)6.0%
Seniors (65+)6.3%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
97.6%
speak English only
Spanish1.2%
Other Indo-European0.6%
Asian & Pacific Islander0.6%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 63.4% of residents not counted as adherents by any reporting body.
Piatt County's 16,000 residents are concentrated in agriculture and small manufacturing, a demographic profile that has tracked closely with the statewide rural realignment — its 2024 presidential margin of R+30.5 reflects a roughly 15-point shift rightward over the past decade.
The Republican margin in Piatt County reached its widest at forty points in 1928. The margin in 2024 was thirty-one points, in line with the county's deep historical pattern.
Its loyalty is rooted in its place. Median household income of $94,811, a 95% non-Hispanic-white share, and a population of 16,695 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 Warrick County and Douglas County.
Most similar counties
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Piatt County, Illinois — The Long Memory. Akashic Intelligence — The Long Memory. https://akashic.app/county/17147/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More republican loyalist counties
Frequently asked questions
How did Piatt County, Illinois vote in 2024?
In 2024, Piatt County, Illinois voted Republican by 30.5 points (R+31), carried by the Republican candidate. Out of 9,508 votes cast, 3,204 went Democratic and 6,104 went Republican.
What is Piatt County, Illinois's political archetype?
Akashic classifies Piatt County, Illinois as a "Republican loyalist" county based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the county has voted Democratic 6 times, Republican 28 times, and other 0 times.
When did Piatt County, Illinois last vote Democratic?
The most recent presidential election in which Piatt County, Illinois voted Democratic was 1996.
How many people live in Piatt County, Illinois?
Piatt County, Illinois has a population of 16,695 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Piatt County, Illinois?
Median household income in Piatt County, Illinois is $94,811 — above the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Piatt County, Illinois?
Akashic tracks 38 presidential elections in Piatt County, Illinois from 1876 to 2024. Of those, 6 went Democratic and 28 went Republican. The county's archetype — "Republican loyalist" — captures the overall trajectory of that voting record.