Peoria County, Illinois

2024 results by precinct

116 precincts · 79,138 votes cast

Harris · D+5

Harris +50

Trump +50

Real precinct boundaries. Hover for vote totals.

38 presidential elections

Year	Won	Margin	Democratic	Republican	Total
2024	D	+4.6%	40,564	36,896	79,138
2020	D	+6.3%	43,578	38,252	83,973
2016	D	+3.1%	38,060	35,633	79,102
2012	D	+4.4%	40,209	36,774	78,411
2008	D	+13.9%	45,906	34,579	81,704
2004	D	+0.1%	41,121	41,051	82,771
2000	D	+2.9%	38,604	36,398	76,812
1996	D	+8.6%	37,383	30,990	74,102
1992	D	+9.1%	38,099	30,718	81,328
1988	R	−3.2%	35,253	37,605	73,230
1984	R	−10.6%	36,830	45,607	82,899
1980	R	−23.4%	28,276	47,815	83,510
1976	R	−14.5%	34,606	46,526	82,123
1972	R	−29.6%	27,264	50,324	78,032
1968	R	−8.2%	30,937	37,021	74,105
1964	D	+17.4%	47,360	33,327	80,687
1960	R	−7.6%	39,061	45,529	84,676
1956	R	−25.6%	30,145	50,888	81,141
1952	R	−18.3%	33,955	49,245	83,339
1948	R	−6.0%	31,026	35,018	66,352
1944	R	−2.0%	32,837	34,171	67,251
1940	D	+9.2%	42,009	34,911	77,221
1936	D	+30.2%	48,063	25,425	74,865
1932	D	+19.5%	37,605	25,166	63,716
1928	R	−14.3%	23,150	31,024	54,913
1924	R	−43.8%	6,343	25,243	43,112
1920	R	−40.6%	9,453	24,541	37,182
1916	D	+0.3%	18,718	18,615	38,395
1912	D	+26.2%	8,364	2,594	22,020
1908	R	−9.4%	8,898	10,828	20,635
1904	R	−32.2%	5,697	11,868	19,135
1900	R	−6.1%	9,433	10,700	20,647
1896	R	−7.1%	9,068	10,486	19,898
1892	D	+4.9%	8,053	7,266	15,924
1888	—	No data	—	—	—
1884	—	No data	—	—	—
1880	—	No data	—	—	—
1876	—	No data	—	—	—

Demographics

Race, ethnicity, and ancestry

Click any group to see the ancestries typically reported within it.

American

100.0%

Polish

1.5%

English

0.7%

African American

13.8%

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. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.

Age distribution by sex

Median age: 38.1 in this county, 39.1 nationally

Male

Age

Female

0.8%

85+

1.4%

2.4%

75–84

3.1%

4.9%

65–74

5.7%

55–64

6.1%

5.6%

45–54

5.9%

6.3%

35–44

6.3%

6.5%

25–34

6.7%

4.3%

18–24

4.5%

9.0%

5–17

8.5%

3.3%

3.2%

Source · American Community Survey 5-year estimates, 2024 release.

Median household income

2024 inflation-adjusted dollars

$65,108

Peoria County ranks near the middle of US counties.

Peoria County$65,108

Illinois$83,390

United States$80,734

Source · American Community Survey 5-year estimates, 2024 release.

Poverty rate

All persons below federal poverty line

15.7%

Children face moderate poverty.

Children under 1818.0%

Working age (18–64)100.0%

Seniors (65+)18.0%

Source · American Community Survey 5-year estimates, 2024 release.

Language at home

Population aged 5 and older

0.0%

speak English only

Source · ACS 5-year estimates, 2024.

Religious adherents

Adherents per capita by tradition

Catholic & Orthodox

13.2%

Other Christian

9.5%

Mainline Protestant

6.8%

Baptist

4.5%

Non-Christian

3.7%

Methodist

3.0%

Pentecostal & Holiness

2.5%

Source · 2020 US Religion Census. Remaining 56.8% of residents not counted as adherents by any reporting body.

Anchored by the city of Peoria, this county along the Illinois River has shifted noticeably from its earlier competitive standing, with the 2024 presidential margin landing at D+4.6 in a metro long watched as a national bellwether.

The county's recent history is a story of close margins. The Democratic margin reached thirty points in 1936; the Republican margin reached forty-four points in 1924. Most other elections have been decided by single-digit points.

Peoria County's demographics — a population of 179,645, a 67% non-Hispanic-white share, a median household income of $65,108 — situate the county close to national averages on several dimensions. The county's voting pattern over the last decade is most similar to that of Sandoval County and St. Joseph County.

Most similar counties

Peoria County delivered a near-tie in 2024.