† Citizen voting-age population estimated for prior cycles; 2004 predates the ACS and is extrapolated. Source: ACS 5-year, table B05003.
——
D+60R+60
2 counties by 2024 margin · County returns · 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
GroupQuincy, IL-MOUnited States
German31.6%12.5%
English10.3%9.5%
Irish10.0%9.4%
American6.6%5.3%
Italian1.8%4.8%
Scottish1.7%1.3%
French1.5%1.6%
Swedish1.0%—
African American†2.4%9.9%
African0.4%0.5%
Mexican1.5%11.3%
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
Quincy, IL-MO
United States
Median age
40.9
39.1
Age 18–24
9.0%
9.2%
Age 65 and older
20.4%
17.2%
Household economy
Measure
Quincy, IL-MO
United States
Median household income
$65,385
$84,427
Poverty rate
12.8%
12.5%
Bachelor's degree or higher (25+)
26.1%
35.6%
Languages at home
Measure
Quincy, IL-MO
United States
Speaks a non-English language at home
2.4%
22.3%
Spanish
1.0%
13.6%
Religious landscape
Measure
Quincy, IL-MO
United States
Catholic
20.2%
18.6%
Evangelical Protestant
38.6%
16.5%
Unclaimed / not counted
29.0%
51.5%
Mainline Protestant
8.8%
5.2%
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.
Quincy, IL-MO
presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
1892
+14.1%
1896
+3.0%
1900
+9.1%
1904
−2.1%
1908
+10.0%
1912
+30.8%
1916
+10.9%
1920
−16.9%
1924
−1.0%
1928
−6.4%
1932
+36.3%
1936
+19.3%
1940
−0.1%
1944
−2.7%
1948
+6.5%
1952
−15.3%
1956
−21.5%
1960
−9.5%
1964
+17.3%
1968
−16.0%
1972
−37.1%
1976
−16.5%
1980
−25.3%
1984
−29.5%
1988
−4.1%
1992
−2.9%
1996
−5.8%
2000
−15.9%
2004
−31.6%
2008
−21.7%
2012
−34.1%
2016
−47.6%
2020
−47.6%
2024
−48.9%
DemocraticRepublican
34 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.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
R
24.8%Harris8,983
73.7%Trump26,726
1.5%
R+48.9
R+1.3
R+47.5
36,252
R
25.2%Biden9,617
72.8%Trump27,773
2.0%
R+47.6
±0.0
R+52.0
38,146
R
23.4%Clinton8,610
71.0%Trump26,134
5.6%
R+47.6
R+13.5
R+49.7
36,790
R
31.9%Obama11,156
66.0%Romney23,093
2.1%
R+34.1
R+12.4
R+38.0
34,976
R
38.6%Obama13,631
60.3%McCain21,305
1.1%
R+21.7
D+9.9
R+29.0
35,325
R
34.0%Kerry12,265
65.6%Bush23,696
0.4%
R+31.6
R+15.8
R+29.2
36,121
R
41.1%Gore14,220
57.0%Bush19,719
1.9%
R+15.9
R+10.1
R+16.4
34,593
R
41.1%Clinton13,386
46.9%Dole15,289
12.0%
R+5.8
R+2.9
R+14.4
32,587
R
38.6%Clinton13,944
41.5%Bush14,990
19.9%
R+2.9
D+1.2
R+8.5
36,141
R
47.8%Dukakis16,228
51.9%Bush17,634
0.4%
R+4.1
D+25.4
D+3.6
33,983
R
35.1%Mondale12,313
64.6%Reagan22,663
0.3%
R+29.5
R+4.3
R+11.3
35,064
R
35.2%Carter12,920
60.5%Reagan22,192
4.3%
R+25.3
R+8.8
R+15.5
36,706
R
41.2%Carter14,412
57.7%Ford20,172
1.1%
R+16.5
D+20.6
R+18.5
34,982
R
31.4%McGovern10,750
68.5%Nixon23,469
0.2%
R+37.1
R+21.1
R+14.0
34,279
R
37.0%Humphrey13,588
53.0%Nixon19,482
10.0%
R+16.0
R+33.3
R+15.3
36,750
D
58.6%Johnson21,602
41.4%Goldwater15,232
0.0%
D+17.3
D+26.8
R+5.3
36,834
R
45.2%Kennedy17,553
54.7%Nixon21,234
0.1%
R+9.5
D+12.0
R+9.6
38,815
R
39.2%Stevenson14,130
60.7%Eisenhower21,870
0.1%
R+21.5
R+6.1
R+6.1
36,032
R
42.3%Stevenson16,197
57.6%Eisenhower22,068
0.1%
R+15.3
R+21.8
R+4.6
38,294
D
53.0%Truman18,115
46.5%Dewey15,893
0.5%
D+6.5
D+9.2
D+2.0
34,172
R
48.4%Roosevelt16,616
51.1%Dewey17,552
0.4%
R+2.7
R+2.6
R+10.2
34,321
R
49.3%Roosevelt20,845
49.5%Willkie20,908
1.2%
R+0.1
R+19.5
R+10.1
42,275
D
57.7%Roosevelt22,716
38.4%Landon15,108
3.9%
D+19.3
R+17.0
R+4.9
39,376
D
67.5%Roosevelt24,844
31.2%Hoover11,475
1.3%
D+36.3
D+42.7
D+18.5
36,812
R
46.3%Smith16,097
52.8%Hoover18,331
0.9%
R+6.4
R+5.5
D+11.0
34,739
R
39.7%Davis12,109
40.6%Coolidge12,401
19.7%
R+1.0
D+16.0
D+24.2
30,524
R
37.2%Cox10,764
54.1%Harding15,662
8.6%
R+16.9
R+27.8
D+9.3
28,926
D
54.3%Wilson16,625
43.4%Hughes13,287
2.3%
D+10.9
R+19.9
D+7.8
30,611
D
51.6%Wilson9,292
20.7%Taft3,737
27.7%
D+30.8
D+20.8
D+11.3
18,021
D
52.9%Bryan10,733
42.9%Taft8,706
4.3%
D+10.0
D+12.1
D+19.5
20,307
R
44.9%Parker8,351
47.0%Roosevelt8,744
8.0%
R+2.1
R+11.2
D+17.6
18,588
D
53.6%Bryan11,427
44.5%McKinley9,489
1.8%
D+9.1
D+6.1
D+16.6
21,304
D
50.6%Bryan10,649
47.6%McKinley10,028
1.8%
D+3.0
R+11.1
D+9.0
21,049
D
54.7%Cleveland9,966
40.7%Harrison7,403
4.6%
D+14.1
—
D+12.4
18,209
voter registration
Registered voters
Total registered voters, over time
Registered voters
Voter registration in Quincy, IL-MO
Year
Total registered
2016
58,975
2018
54,161
2020
55,436
2022
48,856
2024
55,757
domestic migration
Who moves in and out
Net domestic migration over time
+133 net domestic migration · 2025
20112025
Net −3,316 over 2011–2025 · gain loss
Domestic migration in Quincy, IL-MO in Quincy, IL-MO: net domestic migration by year
Year
Net domestic migration
2011
−4
2012
−185
2013
−205
2014
−198
2015
−85
2016
−483
2017
−612
2018
−504
2019
−212
2021
−350
2022
−367
2023
0
2024
−244
2025
+133
Straddling the Mississippi, the Quincy metro pairs a mid-sized Illinois city with rural Missouri counties, producing a reliably conservative regional tilt that has widened in presidential cycles over the past decade.
Across the recorded series it reached a Democratic high of 36.3 points in 1932 and a Republican high of 48.9 points in 2024. Between 2020 and 2024 the metro moved 1.3 points toward the Republican candidate; the 2024 margin was 48.9 points.
A population of 74,678, a 90% non-Hispanic-white share, and a median household income of $65,385 describe the metro. The metro's voting pattern over the last decade is most similar to that of Sidney, OH and Decatur, IN.
Akashic
Political twins — metros
The metros 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.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
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Quincy, IL-MO, Illinois. Akashic. https://akashic.app/cbsa/39500/. Accessed May 20, 2026. License: CC BY 4.0.
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In 2024, Quincy, IL-MO, Illinois voted Republican by 48.9 points (R+48.9), carried by the Republican candidate. Out of 36,252 votes cast, 8,983 went Democratic and 26,726 went Republican.
When did Quincy, IL-MO, Illinois last vote Democratic?
The most recent presidential election in which Quincy, IL-MO, Illinois voted Democratic was 1964.
How many people live in Quincy, IL-MO, Illinois?
Quincy, IL-MO, Illinois has a population of 74,678 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Quincy, IL-MO, Illinois?
Median household income in Quincy, IL-MO, Illinois is $65,385 — below the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Quincy, IL-MO, Illinois?
Akashic tracks 34 presidential elections in Quincy, IL-MO, Illinois from 1892 to 2024. Of those, 10 went Democratic and 24 went Republican.
