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Jefferson County, IL


Micropolitan Statistical Area: Mount Vernon, IL
Designated Market Area: Paducah-Cape Girardeau-Harrisburg, KY-MO-IL-TN
American Communities Project County Type (2023): Working Class Country

Places in Jefferson County, IL     [Sort places by name]

 

Tracts in Jefferson County, IL

   



Click here to view demographic data for Jefferson County, IL

2024 population: 36,107   ( 1,006 from 2020)
Land area: 571.2 square miles
Population density: 63.2 persons per square mile

2024 Census data
White:30,731 85.11% 3.7%
Black:2,9208.09% 1.7%
Indian:1060.29% 10.4%
Asian:4121.14% 7.8%
2+ races:8582.38% 15.9%
Hispanic:1,0802.99% 15.5%
Total non-White:5,37614.89% 3.6%

2020-2024 ComponentsNumberRate
Births:1,683 11.3
Deaths:2,21314.9
Net Migration: -561-3.8
Net Immigration: 770.5
Change in White population:-1,192 -3.2
Change in Non-White pop.:186 0.5



Historical Presidential Election Results for Jefferson County, IL

Recent Trends
VotesΔ MarginSwing %
2024 vs. 2020 R -287 R +81 R + 2.3%
D -368
2024 vs. 2016 R +494 R +679 R + 3.3%
D -185
2020 vs. 2016 R +781 R +598 R + 1.0%
D +183
2024 vs. 2012 R +2,378 R +4,227 R + 25.0%
D -1,849
2016 vs. 2008 R +2,393 R +5,430 R + 34.1%
D -3,037
How to interpret this table


Click on the Year to view county-level data for that election.

YearTurnout WinnerRunner-Up OtherTotal Votes Diff
(St) 		Diff
(US) 		PSV
2024 59% Donald Trump (R) 12,189 73.0% Kamala Harris (D) 4,240 25.4% 275 [+] 1.6% 16,704 30 23 0.30%
2020 60% Donald Trump* (R) 12,476 71.6% Joe Biden (D) 4,608 26.4% 352 [+] 2.0% 17,436 31 25 0.29%
2016 58% Donald Trump (R) 11,695 68.8% Hillary Clinton (D) 4,425 26.0% 879 [+] 5.2% 16,999 30 23 0.30%
2012 54% Mitt Romney (R) 9,811 60.1% Barack Obama* (D) 6,089 37.3% 420 [+] 2.6% 16,320 19 13 0.31%
2008 57% John McCain (R) 9,302 54.0% Barack Obama (D) 7,462 43.3% 457 [+] 2.7% 17,221 17 8 0.31%
2004 56% George W. Bush* (R) 10,160 59.9% John Kerry (D) 6,713 39.6% 75 [+] 0.4% 16,948 15 9 0.32%
2000 51% George W. Bush (R) 8,362 54.4% Albert Gore, Jr. (D) 6,685 43.5% 313 [+] 2.0% 15,360 12 7 0.32%
1996 52% Bill Clinton* (D) 7,263 48.5% Robert Dole (R) 5,937 39.6% 1,781 [+] 11.9% 14,981 3 -1 0.35%
1992 63% Bill Clinton (D) 8,665 49.2% George Bush* (R) 5,497 31.2% 3,435 [+] 19.5% 17,597 -3 -6 0.35%
1988 57% Michael Dukakis (D) 7,729 50.1% George Bush (R) 7,624 49.4% 73 [+] 0.5% 15,426 -1 -4 0.34%
1984 63% Ronald Reagan* (R) 9,642 57.1% Walter Mondale (D) 7,200 42.6% 43 0.3% 16,885 1 -2 0.35%
1980 62% Ronald Reagan (R) 8,972 54.9% Jimmy Carter* (D) 6,761 41.4% 607 [+] 3.7% 16,340 5 4 0.34%
1976 70% Jimmy Carter (D) 8,989 54.4% Gerald Ford* (R) 7,422 44.9% 109 [+] 0.7% 16,520 -5 -3 0.35%
1972 72% Richard Nixon* (R) 9,448 59.4% George McGovern (D) 6,396 40.2% 61 [+] 0.4% 15,905 0 -1 0.34%
1968 78% Richard Nixon (R) 7,367 47.6% Hubert Humphrey (D) 6,476 41.9% 1,624 [+] 10.5% 15,467 1 4 0.33%
1964 80% Lyndon Johnson* (D) 9,653 60.7% Barry Goldwater (R) 6,248 39.3% 0 0.0% 15,901 -1 1 0.34%
1960 87% Richard Nixon (R) 9,841 55.8% John Kennedy (D) 7,784 44.2% 0 0.0% 17,625 6 6 0.37%
1956 77% Dwight Eisenhower* (R) 9,637 54.4% Adlai Stevenson (D) 8,090 45.6% 0 0.0% 17,727 -5 -3 0.40%
1952 77% Dwight Eisenhower (R) 9,841 53.0% Adlai Stevenson (D) 8,698 46.9% 19 0.1% 18,558 -2 -2 0.41%
1948 67% Harry Truman* (D) 8,928 54.7% Thomas Dewey (R) 7,393 45.3% 0 0.0% 16,321 -4 0 0.41%
1944 69% Franklin Roosevelt* (D) 8,496 51.3% Thomas Dewey (R) 7,916 47.8% 139 0.8% 16,551 0 2 0.41%
1940 84% Franklin Roosevelt* (D) 10,887 55.2% Wendell Willkie (R) 8,692 44.1% 136 0.7% 19,715 -4 -1 0.47%
1936 84% Franklin Roosevelt* (D) 10,240 58.0% Alf Landon (R) 7,290 41.3% 138 [+] 0.8% 17,668 2 5 0.45%
1932 74% Franklin Roosevelt (D) 9,495 63.3% Herbert Hoover* (R) 5,333 35.5% 177 [+] 1.2% 15,005 -7 -4 0.44%
1928 71% Herbert Hoover (R) 7,326 55.1% Al Smith (D) 5,905 44.4% 70 [+] 0.5% 13,301 -2 -3 0.43%
1924 67% John Davis (D) 6,258 51.6% Calvin Coolidge (R) 5,406 44.6% 466 [+] 3.8% 12,130 -14 -9 0.49%
1920 61% Warren Harding (R) 5,711 53.6% James Cox (D) 4,772 44.8% 177 [+] 1.7% 10,660 -14 -7 0.51%
1916 75% Woodrow Wilson* (D) 6,685 51.4% Charles Evans Hughes (R) 6,028 46.4% 292 [+] 2.2% 13,005 -6 0 0.59%
1912 38% Woodrow Wilson (D) 3,237 48.9% William Taft* (R) 1,834 27.7% 1,543 [+] 23.3% 6,614 6 5 0.58%
1908 41% William J. Bryan (D) 3,377 49.8% William Taft (R) 3,210 47.3% 200 [+] 2.9% 6,787 -7 -4 0.59%
1904 37% Theodore Roosevelt (R) 3,063 51.3% Alton Parker (D) 2,462 41.3% 442 [+] 7.4% 5,967 -7 -5 0.55%
1900 40% William J. Bryan (D) 3,332 52.5% William McKinley* (R) 2,805 44.2% 206 [+] 3.2% 6,343 -9 -7 0.56%
* incumbent         PSV: percent of state vote

Historical Statewide Election Results for Jefferson County, IL

Click on the Year to view county-level data for that election.

YearTypeTurnout WinnerRunner-Up OtherTotal VotesDiff PSV
2022 S3 47% Kathy Salvi (R) 9,163 69.9% Tammy Duckworth* (D) 3,731 28.4% 222 [+] 1.7% 13,116 28 0.32%
2022 G 47% Darren Bailey (R) 10,096 76.4% J.B. Pritzker* (D) 2,821 21.4% 295 [+] 2.2% 13,212 34 0.32%
2020 S2 59% Mark Curran (R) 11,399 67.1% Richard Durbin* (D) 5,099 30.0% 485 [+] 2.9% 16,983 28 0.28%
2018 G 47% Bruce Rauner* (R) 7,848 56.9% J.B. Pritzker (D) 4,408 32.0% 1,531 [+] 11.1% 13,787 18 0.30%
2016 S3 56% Mark Kirk* (R) 8,790 53.0% Tammy Duckworth (D) 6,903 41.6% 893 [+] 5.4% 16,586 13 0.30%
2014 S2 42% Jim Oberweis (R) 6,738 54.7% Richard Durbin* (D) 5,018 40.7% 565 [+] 4.6% 12,321 12 0.34%
2014 G 42% Bruce Rauner (R) 8,281 67.0% Pat Quinn* (D) 3,310 26.8% 775 [+] 6.3% 12,366 17 0.34%
2010 S3 40% Mark Kirk (R) 7,580 62.1% Alexi Giannoulias (D) 3,799 31.1% 827 [+] 6.8% 12,206 14 0.33%
2010 G 41% Bill Brady (R) 7,500 60.5% Pat Quinn* (D) 4,030 32.5% 876 [+] 7.1% 12,406 15 0.33%
2008 S2 53% Richard Durbin* (D) 9,475 58.7% Steve Sauerberg (R) 5,717 35.4% 954 [+] 5.9% 16,146 7 0.30%
2006 G 41% Rod Blagojevich* (D) 5,781 46.6% Judy Baar Topinka (R) 5,279 42.5% 1,358 [+] 10.9% 12,418 3 0.36%
2004 S3 54% Barack Obama (D) 9,111 55.8% Alan Keyes (R) 6,778 41.5% 443 [+] 2.7% 16,332 14 0.32%
2002 S2 42% Richard Durbin* (D) 7,416 57.8% Jim Durkin (R) 5,227 40.7% 188 [+] 1.5% 12,831 3 0.37%
2002 G 43% Rod Blagojevich (D) 6,435 49.5% Jim Ryan (R) 6,289 48.4% 268 [+] 2.1% 12,992 3 0.37%
1998 S3 41% Peter Fitzgerald (R) 7,210 59.6% Carol Moseley-Braun* (D) 4,629 38.3% 252 [+] 2.1% 12,091 9 0.36%
1998 G 42% Glenn Poshard (D) 8,531 69.0% George Ryan (R) 3,751 30.4% 75 [+] 0.6% 12,357 -21 0.37%
1996 S2 51% Richard Durbin (D) 7,976 54.0% Al Salvi (R) 6,339 42.9% 451 [+] 3.1% 14,766 2 0.35%
1994 G 40% Jim Edgar* (R) 7,840 68.4% Dawn Clark Netsch (D) 3,414 29.8% 212 [+] 1.8% 11,466 5 0.37%
1992 S3 61% Carol Moseley-Braun (D) 8,435 49.7% Richard Williamson (R) 7,783 45.9% 746 [+] 4.4% 16,964 3 0.34%
1990 S2 45% Paul Simon* (D) 8,549 69.5% Lynn Martin (R) 3,743 30.5% 0 0.0% 12,292 -4 0.38%
1990 G 46% Neil Hartigan (D) 7,370 59.6% Jim Edgar (R) 4,925 39.8% 73 [+] 0.6% 12,368 -11 0.38%
1986 S3 42% Alan Dixon* (D) 7,536 67.3% Judy Koehler (R) 3,579 31.9% 89 [+] 0.8% 11,204 -2 0.36%
1986 G 42% James Thompson* (R) 5,846 51.5% Adlai Stevenson III (Illinois Solidarity) 4,664 41.1% 840 [+] 7.4% 11,350 -1 0.36%
1984 S2 63% Paul Simon (D) 9,135 54.2% Charles Percy* (R) 7,610 45.2% 103 [+] 0.6% 16,848 -3 0.35%
1982 G 46% Adlai Stevenson III (D) 6,155 50.7% James Thompson* (R) 5,897 48.6% 78 [+] 0.6% 12,130 -1 0.33%
1980 S3 60% Alan Dixon (D) 8,305 52.4% David O'Neal (R) 7,420 46.8% 125 [+] 0.8% 15,850 4 0.35%
1978 S2 42% Alex Seith (D) 5,104 50.4% Charles Percy* (R) 4,808 47.5% 214 [+] 2.1% 10,126 -6 0.32%
1978 G 42% James Thompson* (R) 5,800 56.9% Michael Bakalis (D) 4,346 42.6% 45 [+] 0.4% 10,191 -2 0.32%
1976 G 69% James Thompson (R) 10,252 62.9% Michael Howlitt (D) 6,019 36.9% 23 [+] 0.1% 16,294 -2 0.35%
1974 S3 50% Adlai Stevenson III* (D) 6,738 59.7% George Burditt (R) 4,539 40.2% 15 [+] 0.1% 11,292 3 0.39%
1972 S2 70% Charles Percy* (R) 8,779 57.0% Roman Pucinski (D) 6,573 42.7% 41 [+] 0.3% 15,393 -5 0.33%
1972 G 73% Daniel Walker (D) 9,388 58.7% Richard Ogilvie* (R) 6,586 41.2% 28 [+] 0.2% 16,002 -8 0.34%
1970 S3 65% Adlai Stevenson III (D) 6,628 51.5% Ralph Smith* (R) 6,223 48.3% 22 [+] 0.2% 12,873 6 0.36%
1968 S3 75% Everett Dirksen* (R) 8,279 56.0% William Clark (D) 6,480 43.9% 15 [+] 0.1% 14,774 3 0.33%
1968 G 76% Richard Ogilvie (R) 7,870 52.2% Samuel Shapiro* (D) 7,204 47.8% 12 [+] 0.1% 15,086 1 0.33%
1966 S2 68% Charles Percy (R) 7,205 53.2% Paul Douglas* (D) 6,347 46.8% 0 0.0% 13,552 -2 0.35%
1964 G 79% Otto Kerner* (D) 8,448 53.3% Charles Percy (R) 7,391 46.7% 0 0.0% 15,839 -1 0.34%
1962 S3 74% Sidney Yates (D) 7,589 51.3% Everett Dirksen* (R) 7,211 48.7% 0 0.0% 14,800 -4 0.40%
1960 S2 85% Paul Douglas* (D) 9,183 53.3% Samuel Witwer (R) 8,047 46.7% 0 0.0% 17,230 2 0.37%
1960 G 87% William Stratton* (R) 9,248 52.7% Otto Kerner (D) 8,286 47.3% 0 0.0% 17,534 8 0.38%
*: incumbent               +: ran on additional party lines               Type: G: Governor; S1,S2,S3: Senate Class 1, 2 or 3
italics: special election           RO: runoff election           PSV: percent of state vote


Historical U.S. House Election Results for Jefferson County, IL

Click on the District to view county-level data for that election (where available).

DateDistrictWinnerRunner-Up OtherTotal Votes
2024-11-05 IL12Mike Bost* (R) 12,549 76.9% Brian Roberts (D) 3,775 23.1% 0 0.0% 16,324
County Total for 2024-11-05:   16,324
2022-11-08 IL12Mike Bost* (R) 10,259 78.1% Chip Markel (D) 2,871 21.9% 0 0.0% 13,130
County Total for 2022-11-08:   13,130
2020-11-03 IL12Mike Bost* (R) 12,449 74.8% Raymond Lenzi (D) 4,183 25.2% 0 0.0% 16,632
County Total for 2020-11-03:   16,632
2018-11-06 IL12Mike Bost* (R) 9,088 64.9% Brendan Kelly (D) 4,554 32.5% 360 2.6% 14,002
County Total for 2018-11-06:   14,002
2016-11-08 IL12Mike Bost* (R) 11,023 67.0% C.J. Baricevic (D) 4,388 26.7% 1,029 6.3% 16,440
County Total for 2016-11-08:   16,440
2014-11-04 IL12Mike Bost (R) 7,616 61.4% William Enyart* (D) 4,071 32.8% 714 5.8% 12,401
County Total for 2014-11-04:   12,401
2012-11-06 IL12Jason Plummer (R) 8,306 52.0% William Enyart (D) 6,507 40.8% 1,149 7.2% 15,962
County Total for 2012-11-06:   15,962
2010-11-02 IL19John Shimkus* (R) 8,598 70.3% Tim Bagwell (D) 3,641 29.7% 0 0.0% 12,239
County Total for 2010-11-02:   12,239
2008-11-04 IL19John Shimkus* (R) 10,100 60.7% Daniel Davis (D) 6,142 36.9% 389 2.3% 16,631
County Total for 2008-11-04:   16,631
2006-11-07 IL19John Shimkus* (R) 6,965 56.0% Danny Stover (D) 5,465 44.0% 0 0.0% 12,430
County Total for 2006-11-07:   12,430
2004-11-02 IL19John Shimkus* (R) 10,937 67.2% Tim Bagwell (D) 5,339 32.8% 0 0.0% 16,276
County Total for 2004-11-02:   16,276
2002-11-05 IL19David Phelps* (D) 6,501 50.1% John Shimkus* (R) 6,472 49.9% 0 0.0% 12,973
County Total for 2002-11-05:   12,973
2000-11-07 IL20John Shimkus* (R) 8,941 60.8% Jeffrey Cooper (D) 5,753 39.2% 0 0.0% 14,694
County Total for 2000-11-07:   14,694
1998-11-03 IL20John Shimkus* (R) 6,893 57.7% Rick Verticchio (D) 5,043 42.3% 0 0.0% 11,936
County Total for 1998-11-03:   11,936
1996-11-05 IL20Jay Hoffman (D) 7,995 55.0% John Shimkus (R) 6,534 45.0% 0 0.0% 14,529
County Total for 1996-11-05:   14,529
1994-11-08 IL20Richard Durbin* (D) 5,753 51.0% Bill Owens (R) 5,525 49.0% 0 0.0% 11,278
County Total for 1994-11-08:   11,278
1992-11-03 IL20Richard Durbin* (D) 9,209 54.8% John Shimkus (R) 7,582 45.2% 0 0.0% 16,791
County Total for 1992-11-03:   16,791
*: incumbent           sp: special election           RO: runoff election

Voter Registration Data for Jefferson County, IL

Party registration is not used in this state, however as of 2022 registrations in Jefferson County, IL were estimated to be 38% Republican and 24% Democrat.

YearTotalRepublicanDemocratOtherR/D EdgeR/D Edge %VAPOP %
2024 23,987 0 0.0% 0 0.0% 23,987 100.0% n/a n/a 85%
2022 23,898 0 0.0% 0 0.0% 23,898 100.0% n/a n/a 85%
2020 24,196 0 0.0% 0 0.0% 24,196 100.0% n/a n/a 86%
2018 24,096 0 0.0% 0 0.0% 24,096 100.0% n/a n/a 84%
2016 24,464 0 0.0% 0 0.0% 24,464 100.0% n/a n/a 84%
2012 24,396 0 0.0% 0 0.0% 24,396 100.0% n/a n/a 82%
2010 24,750 0 0.0% 0 0.0% 24,750 100.0% n/a n/a 82%
2008 25,816 0 0.0% 0 0.0% 25,816 100.0% n/a n/a 85%
2006 27,269 0 0.0% 0 0.0% 27,269 100.0% n/a n/a 90%
2004 26,860 0 0.0% 0 0.0% 26,860 100.0% n/a n/a 89%
2000 24,892 0 0.0% 0 0.0% 24,892 100.0% n/a n/a 82%
1994 22,723 0 0.0% 0 0.0% 22,723 100.0% n/a n/a 80%
1986 24,437 0 0.0% 0 0.0% 24,437 100.0% n/a n/a 91%
VAPOP% is the estimated percentage of voting age population that is registered.
Registration data may include "inactive" voters.   Data for each year pertains to the November elections.