† Citizen voting-age population estimated for prior cycles; 2004 predates the ACS and is extrapolated. Source: ACS 5-year, table B05003.
——
D+60R+60
20042024
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupBelvidereIllinoisUnited States
German21.7%16.1%12.5%
Irish11.5%10.6%9.4%
Italian8.0%5.4%4.8%
English7.6%6.9%9.5%
Polish5.9%6.0%2.2%
Swedish4.8%1.5%—
Norwegian2.9%——
American2.6%3.3%5.3%
Mexican31.4%14.4%11.3%
Puerto Rican2.2%1.7%1.8%
Peruvian0.4%——
Spaniard0.4%——
Spanish0.3%——
African American†3.3%12.1%9.9%
Filipino0.4%1.0%0.9%
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
Belvidere
Illinois
United States
Median age
38.7
39.1
39.1
Age 18–24
10.1%
9.1%
9.2%
Age 65 and older
16.3%
16.9%
17.2%
Household economy
Measure
Belvidere
Illinois
United States
Median household income
$64,528
$83,390
$84,427
Poverty rate
14.6%
11.8%
12.5%
Bachelor's degree or higher (25+)
12.8%
37.9%
35.6%
Languages at home
Measure
Belvidere
Illinois
United States
Speaks a non-English language at home
27.5%
24.1%
22.3%
Spanish
25.2%
14.0%
13.6%
Religious landscape
Measure
Belvidere
Illinois
United States
Catholic
—
24.2%
18.6%
Evangelical Protestant
—
11.7%
16.5%
Unclaimed / not counted
—
49.2%
51.5%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
Belvidere, Illinois
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
−0.5%
2008
+18.0%
2012
+11.6%
2016
−1.1%
2020
−1.2%
2024
−5.4%
DemocraticRepublican
6 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year. Third-party votes in 2012 are allocated from certified county totals by this place's share of each county's two-party vote — that cycle's precinct source records two-party splits. † 2004 sub-county results are estimated: the source's block-level detail for this cycle was unreliable — either county/municipality-level consolidated reporting (COVID-era) or a precinct-to-block allocation that misplaced votes — so the figures are allocated from the constituent county totals in proportion to the place and scaled to certified totals.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
R
46.1%Harris4,277
51.6%Trump4,781
2.3%
R+5.4
R+4.2
R+4.0
9,270
R
48.2%Biden4,768
49.4%Trump4,891
2.4%
R+1.2
R+0.1
R+5.7
9,894
R
45.6%Clinton4,253
46.7%Trump4,359
7.7%
R+1.1
R+12.8
R+3.2
9,331
D
54.7%Obama4,601
43.1%Romney3,624
2.2%
D+11.6
R+6.4
D+7.8
8,406
D
57.8%Obama5,160
39.8%McCain3,555
2.4%
D+18.0
D+18.4
D+10.7
8,929
R
49.2%Kerry3,784
49.6%Bush3,819
1.2%
R+0.5
—
D+2.0
7,698
Belvidere's political lean has tracked closely with the fortunes of its Stellantis assembly plant — one of the larger single employers in exurban northern Illinois — making economic news a reliable leading indicator here.
Across the recorded series it reached a Democratic high of 18.0 points in 2008 and a Republican high of 5.4 points in 2024. Between 2020 and 2024 the city moved 4.2 points toward the Republican candidate; the 2024 margin was 5.4 points.
A population of 24,752, a 57% non-Hispanic-white share, and a median household income of $64,528 describe the city. The city's voting pattern over the last decade is most similar to that of Lake Station and Marshalltown.
Akashic
Political twins — cities
The cities whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
In 2024, Belvidere, Illinois voted Republican by 5.4 points (R+5.4), carried by the Republican candidate. Out of 9,270 votes cast, 4,277 went Democratic and 4,781 went Republican.
When did Belvidere, Illinois last vote Democratic?
The most recent presidential election in which Belvidere, Illinois voted Democratic was 2012.
How many people live in Belvidere, Illinois?
Belvidere, Illinois has a population of 24,752 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Belvidere, Illinois?
Median household income in Belvidere, Illinois is $64,528 — below the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Belvidere, Illinois?
Akashic tracks 6 presidential elections in Belvidere, Illinois from 2004 to 2024. Of those, 2 went Democratic and 4 went Republican.
