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McHenry County, IL


Metropolitan Statistical Area: Chicago-Naperville-Elgin, IL-IN-WI
Designated Market Area: Chicago, IL-IN
American Communities Project County Type (2023): Exurbs

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

 

Tracts in McHenry County, IL

   



Click here to view demographic data for McHenry County, IL

2022 population: 311,747   ( 2,987 from 2010 , 1,520 from 2020)
Land area: 603.4 square miles
Population density: 516.7 persons per square mile

2022 Census data
White:243,984 78.26% 5.6%
Black:5,3281.71% 75.0%
Indian:4800.15% 5.5%
Asian:9,9163.18% 27.5%
2+ races:4,4771.44% 30.3%
Hispanic:47,56215.26% 34.9%
Total non-White:67,76321.74% 35.1%

2020-2022 ComponentsNumberRate
Births:6,657 10.7
Deaths:5,6129.0
Net Migration: 1770.3
Net Immigration: 1610.3
Change in White population:-14,600 -4.7
Change in Non-White pop.:17,587 5.7



Historical Presidential Election Results for McHenry County, IL

Recent Trends
VotesΔ MarginSwing %
2020 vs. 2016 R +10,648 D +6,703 D + 5.6%
D +17,351
2020 vs. 2012 R +10,662 D +7,695 D + 6.4%
D +18,357
2020 vs. 2008 R +17,415 R +11,549 R + 8.0%
D +5,866
2016 vs. 2008 R +6,767 R +18,252 R + 13.6%
D -11,485
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
2020 69% Donald Trump* (R) 82,260 50.0% Joe Biden (D) 78,154 47.5% 4,164 [+] 2.5% 164,578 10 3 2.72%
2016 62% Donald Trump (R) 71,612 49.8% Hillary Clinton (D) 60,803 42.2% 11,515 [+] 8.0% 143,930 11 4 2.57%
2012 59% Mitt Romney (R) 71,598 53.3% Barack Obama* (D) 59,797 44.5% 2,842 [+] 2.1% 134,237 13 6 2.56%
2008 65% Barack Obama (D) 72,288 51.8% John McCain (R) 64,845 46.4% 2,499 [+] 1.8% 139,632 10 1 2.52%
2004 64% George W. Bush* (R) 76,412 59.7% John Kerry (D) 50,330 39.3% 1,206 [+] 0.9% 127,948 15 9 2.43%
2000 59% George W. Bush (R) 62,112 58.5% Albert Gore, Jr. (D) 40,698 38.3% 3,375 [+] 3.2% 106,185 16 11 2.24%
1996 52% Robert Dole (R) 41,136 49.4% Bill Clinton* (D) 31,240 37.5% 10,880 [+] 13.1% 83,256 13 9 1.93%
1992 63% George Bush* (R) 41,356 46.8% Bill Clinton (D) 24,783 28.1% 22,155 [+] 25.1% 88,294 13 9 1.75%
1988 53% George Bush (R) 46,135 70.4% Michael Dukakis (D) 18,919 28.9% 445 [+] 0.7% 65,499 20 17 1.44%
1984 55% Ronald Reagan* (R) 47,282 76.2% Walter Mondale (D) 14,420 23.2% 340 0.5% 62,042 20 17 1.29%
1980 61% Ronald Reagan (R) 40,045 65.0% Jimmy Carter* (D) 14,540 23.6% 7,070 [+] 11.5% 61,655 15 14 1.30%
1976 64% Gerald Ford* (R) 37,115 67.5% Jimmy Carter (D) 16,799 30.5% 1,075 [+] 2.0% 54,989 17 19 1.17%
1972 63% Richard Nixon* (R) 36,114 74.8% George McGovern (D) 12,090 25.0% 108 [+] 0.2% 48,312 16 14 1.02%
1968 66% Richard Nixon (R) 27,245 66.2% Hubert Humphrey (D) 10,896 26.5% 3,044 [+] 7.4% 41,185 19 23 0.89%
1964 72% Barry Goldwater (R) 22,503 55.5% Lyndon Johnson* (D) 18,014 44.5% 0 0.0% 40,517 15 17 0.86%
1960 77% Richard Nixon (R) 25,787 67.0% John Kennedy (D) 12,659 32.9% 62 0.2% 38,508 17 17 0.81%
1956 70% Dwight Eisenhower* (R) 24,912 78.3% Adlai Stevenson (D) 6,820 21.4% 66 0.2% 31,798 19 21 0.72%
1952 76% Dwight Eisenhower (R) 20,975 74.2% Adlai Stevenson (D) 7,218 25.5% 64 0.2% 28,257 19 19 0.63%
1948 68% Thomas Dewey (R) 15,387 73.4% Harry Truman* (D) 5,459 26.1% 103 [+] 0.5% 20,949 24 28 0.53%
1944 77% Thomas Dewey (R) 15,666 73.6% Franklin Roosevelt* (D) 5,567 26.1% 66 0.3% 21,299 26 28 0.53%
1940 95% Wendell Willkie (R) 16,480 72.3% Franklin Roosevelt* (D) 6,170 27.1% 145 0.6% 22,795 24 27 0.54%
1936 90% Alf Landon (R) 12,031 60.6% Franklin Roosevelt* (D) 6,893 34.7% 942 [+] 4.7% 19,866 21 24 0.50%
1932 87% Herbert Hoover* (R) 9,880 53.1% Franklin Roosevelt (D) 8,260 44.4% 454 [+] 2.4% 18,594 11 14 0.55%
1928 81% Herbert Hoover (R) 10,661 65.3% Al Smith (D) 5,596 34.3% 62 [+] 0.4% 16,319 8 7 0.53%
1924 66% Calvin Coolidge (R) 8,751 67.2% Robert LaFollette (Prog) 2,864 22.0% 1,400 [+] 10.8% 13,015 8 13 0.53%
1920 61% Warren Harding (R) 9,885 85.1% James Cox (D) 1,536 13.2% 195 [+] 1.7% 11,616 17 25 0.55%
1916 67% Charles Evans Hughes (R) 9,024 72.0% Woodrow Wilson* (D) 3,278 26.2% 231 [+] 1.8% 12,533 19 26 0.57%
1912 40% Theodore Roosevelt (Prog) 3,046 40.9% William Taft* (R) 2,370 31.8% 2,031 [+] 27.3% 7,447 10 9 0.65%
1908 43% William Taft (R) 5,331 71.1% William J. Bryan (D) 1,887 25.2% 283 [+] 3.8% 7,501 17 19 0.65%
1904 42% Theodore Roosevelt (R) 5,409 77.2% Alton Parker (D) 1,309 18.7% 288 [+] 4.1% 7,006 18 21 0.65%
1900 47% William McKinley* (R) 5,234 70.1% William J. Bryan (D) 2,076 27.8% 158 [+] 2.1% 7,468 17 18 0.66%
* incumbent         PSV: percent of state vote



2020 President, McHenry County, IL
CandidateVotesPct
Joe Biden (D) 78,154 47.5%
Donald Trump* (R) 82,260 50.0%
Jo Jorgensen (Lbt) 2,176 1.3%
Other 1,988 1.2%
TOTAL 164,578
Turnout: 69% Diff (St): 10 Diff (US): 3


2016 President, McHenry County, IL
CandidateVotesPct
Hillary Clinton (D) 60,803 42.2%
Donald Trump (R) 71,612 49.8%
Gary Johnson (Lbt) 7,180 5.0%
Jill Stein (Grn) 2,155 1.5%
Other 2,180 1.5%
TOTAL 143,930
Turnout: 62% Diff (St): 11 Diff (US): 4


2012 President, McHenry County, IL
CandidateVotesPct
Barack Obama* (D) 59,797 44.5%
Mitt Romney (R) 71,598 53.3%
Gary Johnson (Lbt) 1,682 1.3%
Other 1,160 0.9%
TOTAL 134,237
Turnout: 59% Diff (St): 13 Diff (US): 6


2008 President, McHenry County, IL
CandidateVotesPct
Barack Obama (D) 72,288 51.8%
John McCain (R) 64,845 46.4%
Ralph Nader (I) 916 0.7%
Bob Barr (Lbt) 670 0.5%
Other 913 0.7%
TOTAL 139,632
Turnout: 65% Diff (St): 10 Diff (US): 1


2004 President, McHenry County, IL
CandidateVotesPct
George W. Bush* (R) 76,412 59.7%
John Kerry (D) 50,330 39.3%
Other 1,206 0.9%
TOTAL 127,948
Turnout: 64% Diff (St): 15 Diff (US): 9


2000 President, McHenry County, IL
CandidateVotesPct
George W. Bush (R) 62,112 58.5%
Albert Gore, Jr. (D) 40,698 38.3%
Ralph Nader (Grn) 2,751 2.6%
Pat Buchanan (Ref) 302 0.3%
Other 322 0.3%
TOTAL 106,185
Turnout: 59% Diff (St): 16 Diff (US): 11


1996 President, McHenry County, IL
CandidateVotesPct
Bill Clinton* (D) 31,240 37.5%
Robert Dole (R) 41,136 49.4%
Ross Perot (Ref) 10,082 12.1%
Harry Browne (Lbt) 476 0.6%
Other 322 0.4%
TOTAL 83,256
Turnout: 52% Diff (St): 13 Diff (US): 9


1992 President, McHenry County, IL
CandidateVotesPct
Bill Clinton (D) 24,783 28.1%
George Bush* (R) 41,356 46.8%
Ross Perot (I) 21,817 24.7%
Other 338 0.4%
TOTAL 88,294
Turnout: 63% Diff (St): 13 Diff (US): 9


1988 President, McHenry County, IL
CandidateVotesPct
George Bush (R) 46,135 70.4%
Michael Dukakis (D) 18,919 28.9%
Ron Paul (Lbt) 251 0.4%
Other 194 0.3%
TOTAL 65,499
Turnout: 53% Diff (St): 20 Diff (US): 17


1984 President, McHenry County, IL
CandidateVotesPct
Ronald Reagan* (R) 47,282 76.2%
Walter Mondale (D) 14,420 23.2%
Other 340 0.5%
TOTAL 62,042
Turnout: 55% Diff (St): 20 Diff (US): 17


1980 President, McHenry County, IL
CandidateVotesPct
Ronald Reagan (R) 40,045 65.0%
Jimmy Carter* (D) 14,540 23.6%
John Anderson (I) 5,871 9.5%
Edward Clark (Lbt) 884 1.4%
Other 315 0.5%
TOTAL 61,655
Turnout: 61% Diff (St): 15 Diff (US): 14


1976 President, McHenry County, IL
CandidateVotesPct
Jimmy Carter (D) 16,799 30.5%
Gerald Ford* (R) 37,115 67.5%
Eugene McCarthy (I) 871 1.6%
Other 204 0.4%
TOTAL 54,989
Turnout: 64% Diff (St): 17 Diff (US): 19


1972 President, McHenry County, IL
CandidateVotesPct
Richard Nixon* (R) 36,114 74.8%
George McGovern (D) 12,090 25.0%
Other 108 0.2%
TOTAL 48,312
Turnout: 63% Diff (St): 16 Diff (US): 14


1968 President, McHenry County, IL
CandidateVotesPct
Richard Nixon (R) 27,245 66.2%
Hubert Humphrey (D) 10,896 26.5%
George Wallace (AIP) 2,701 6.6%
Other 343 0.8%
TOTAL 41,185
Turnout: 66% Diff (St): 19 Diff (US): 23


1960 President, McHenry County, IL
CandidateVotesPct
John Kennedy (D) 12,659 32.9%
Richard Nixon (R) 25,787 67.0%
Other 62 0.2%
TOTAL 38,508
Turnout: 77% Diff (St): 17 Diff (US): 17


1956 President, McHenry County, IL
CandidateVotesPct
Dwight Eisenhower* (R) 24,912 78.3%
Adlai Stevenson (D) 6,820 21.4%
Other 66 0.2%
TOTAL 31,798
Turnout: 70% Diff (St): 19 Diff (US): 21


1952 President, McHenry County, IL
CandidateVotesPct
Dwight Eisenhower (R) 20,975 74.2%
Adlai Stevenson (D) 7,218 25.5%
Other 64 0.2%
TOTAL 28,257
Turnout: 76% Diff (St): 19 Diff (US): 19


1948 President, McHenry County, IL
CandidateVotesPct
Harry Truman* (D) 5,459 26.1%
Thomas Dewey (R) 15,387 73.4%
Other 103 0.5%
TOTAL 20,949
Turnout: 68% Diff (St): 24 Diff (US): 28


1944 President, McHenry County, IL
CandidateVotesPct
Franklin Roosevelt* (D) 5,567 26.1%
Thomas Dewey (R) 15,666 73.6%
Other 66 0.3%
TOTAL 21,299
Turnout: 77% Diff (St): 26 Diff (US): 28


1940 President, McHenry County, IL
CandidateVotesPct
Franklin Roosevelt* (D) 6,170 27.1%
Wendell Willkie (R) 16,480 72.3%
Other 145 0.6%
TOTAL 22,795
Turnout: 95% Diff (St): 24 Diff (US): 27


1936 President, McHenry County, IL
CandidateVotesPct
Franklin Roosevelt* (D) 6,893 34.7%
Alf Landon (R) 12,031 60.6%
William Lemke (Union) 898 4.5%
Norman Thomas (Soc) 19 0.1%
Other 25 0.1%
TOTAL 19,866
Turnout: 90% Diff (St): 21 Diff (US): 24


1932 President, McHenry County, IL
CandidateVotesPct
Franklin Roosevelt (D) 8,260 44.4%
Herbert Hoover* (R) 9,880 53.1%
Norman Thomas (Soc) 431 2.3%
Other 23 0.1%
TOTAL 18,594
Turnout: 87% Diff (St): 11 Diff (US): 14


1928 President, McHenry County, IL
CandidateVotesPct
Herbert Hoover (R) 10,661 65.3%
Al Smith (D) 5,596 34.3%
Norman Thomas (Soc) 57 0.3%
Other 5 0.0%
TOTAL 16,319
Turnout: 81% Diff (St): 8 Diff (US): 7


1924 President, McHenry County, IL
CandidateVotesPct
Calvin Coolidge (R) 8,751 67.2%
John Davis (D) 1,372 10.5%
Robert LaFollette (Prog) 2,864 22.0%
Other 28 0.2%
TOTAL 13,015
Turnout: 66% Diff (St): 8 Diff (US): 13


1920 President, McHenry County, IL
CandidateVotesPct
Warren Harding (R) 9,885 85.1%
James Cox (D) 1,536 13.2%
Eugene Debs (Soc) 104 0.9%
Parley Christiansen (FL) 28 0.2%
Aaron Watkins (Proh) 55 0.5%
Other 8 0.1%
TOTAL 11,616
Turnout: 61% Diff (St): 17 Diff (US): 25


1916 President, McHenry County, IL
CandidateVotesPct
Woodrow Wilson* (D) 3,278 26.2%
Charles Evans Hughes (R) 9,024 72.0%
Allan Benson (Soc) 58 0.5%
James Hanly (Proh) 172 1.4%
Other 1 0.0%
TOTAL 12,533
Turnout: 67% Diff (St): 19 Diff (US): 26


1912 President, McHenry County, IL
CandidateVotesPct
Woodrow Wilson (D) 1,913 25.7%
Theodore Roosevelt (Prog) 3,046 40.9%
William Taft* (R) 2,370 31.8%
Eugene Debs (Soc) 39 0.5%
Eugene Chafin (Proh) 74 1.0%
Other 5 0.1%
TOTAL 7,447
Turnout: 40% Diff (St): 10 Diff (US): 9


1908 President, McHenry County, IL
CandidateVotesPct
William Taft (R) 5,331 71.1%
William J. Bryan (D) 1,887 25.2%
Eugene Debs (Soc) 51 0.7%
Eugene Chafin (Proh) 194 2.6%
Thomas Hisgen (I) 32 0.4%
Other 6 0.1%
TOTAL 7,501
Turnout: 43% Diff (St): 17 Diff (US): 19


1904 President, McHenry County, IL
CandidateVotesPct
Theodore Roosevelt (R) 5,409 77.2%
Alton Parker (D) 1,309 18.7%
Eugene Debs (Soc) 41 0.6%
Silas Swallow (Proh) 223 3.2%
Thomas Watson (Pop) 15 0.2%
Other 9 0.1%
TOTAL 7,006
Turnout: 42% Diff (St): 18 Diff (US): 21


1900 President, McHenry County, IL
CandidateVotesPct
William McKinley* (R) 5,234 70.1%
William J. Bryan (D) 2,076 27.8%
John Woolley (Proh) 136 1.8%
Eugene Debs (Soc) 13 0.2%
Other 9 0.1%
TOTAL 7,468
Turnout: 47% Diff (St): 17 Diff (US): 18
* incumbent

Historical Statewide Election Results for McHenry County, IL

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

YearTypeTurnout WinnerRunner-Up OtherTotal VotesDiff PSV
2022 S3 49% Kathy Salvi (R) 57,974 49.8% Tammy Duckworth* (D) 56,054 48.2% 2,322 [+] 2.0% 116,350 8 2.84%
2022 G 49% Darren Bailey (R) 56,839 48.9% J.B. Pritzker* (D) 55,134 47.5% 4,198 [+] 3.6% 116,171 7 2.83%
2020 S2 68% Mark Curran (R) 80,440 49.4% Richard Durbin* (D) 73,803 45.4% 8,487 [+] 5.2% 162,730 11 2.73%
2018 G 50% Bruce Rauner* (R) 60,646 52.0% J.B. Pritzker (D) 48,633 41.7% 7,265 [+] 6.2% 116,544 13 2.56%
2016 S3 61% Mark Kirk* (R) 72,296 51.1% Tammy Duckworth (D) 58,815 41.5% 10,492 [+] 7.4% 141,603 11 2.58%
2014 S2 41% Jim Oberweis (R) 53,601 57.3% Richard Durbin* (D) 35,445 37.9% 4,532 [+] 4.8% 93,578 15 2.60%
2014 G 41% Bruce Rauner (R) 61,827 65.8% Pat Quinn* (D) 29,116 31.0% 3,053 [+] 3.2% 93,996 16 2.59%
2010 S3 42% Mark Kirk (R) 55,831 59.5% Alexi Giannoulias (D) 30,889 32.9% 7,062 [+] 7.5% 93,782 12 2.53%
2010 G 42% Bill Brady (R) 53,585 56.9% Pat Quinn* (D) 31,659 33.6% 8,973 [+] 9.5% 94,217 11 2.53%
2008 S2 63% Richard Durbin* (D) 73,846 54.7% Steve Sauerberg (R) 54,635 40.5% 6,577 [+] 4.9% 135,058 12 2.53%
2006 G 39% Judy Baar Topinka (R) 39,113 48.3% Rod Blagojevich* (D) 30,317 37.4% 11,553 [+] 14.3% 80,983 9 2.32%
2004 S3 63% Barack Obama (D) 76,652 61.6% Alan Keyes (R) 42,936 34.5% 4,814 [+] 3.9% 124,402 7 2.42%
2002 S2 40% Jim Durkin (R) 38,394 50.6% Richard Durbin* (D) 35,820 47.2% 1,734 [+] 2.3% 75,948 13 2.18%
2002 G 40% Jim Ryan (R) 45,494 59.3% Rod Blagojevich (D) 26,815 35.0% 4,372 [+] 5.7% 76,681 14 2.17%
1998 S3 38% Peter Fitzgerald (R) 42,847 65.8% Carol Moseley-Braun* (D) 20,442 31.4% 1,853 [+] 2.8% 65,142 15 1.92%
1998 G 38% George Ryan (R) 47,037 72.2% Glenn Poshard (D) 17,003 26.1% 1,083 [+] 1.7% 65,123 21 1.94%
1996 S2 51% Al Salvi (R) 45,847 56.1% Richard Durbin (D) 31,436 38.5% 4,439 [+] 5.4% 81,722 15 1.92%
1994 G 39% Jim Edgar* (R) 44,414 76.2% Dawn Clark Netsch (D) 12,596 21.6% 1,292 [+] 2.2% 58,302 12 1.88%
1992 S3 62% Richard Williamson (R) 49,057 56.7% Carol Moseley-Braun (D) 32,339 37.4% 5,164 [+] 6.0% 86,560 14 1.75%
1990 S2 38% Lynn Martin (R) 25,209 51.7% Paul Simon* (D) 23,539 48.3% 0 0.0% 48,748 17 1.50%
1990 G 38% Jim Edgar (R) 30,655 62.7% Neil Hartigan (D) 17,468 35.7% 756 [+] 1.5% 48,879 12 1.50%
1986 S3 35% Judy Koehler (R) 22,650 54.1% Alan Dixon* (D) 18,593 44.4% 626 [+] 1.5% 41,869 20 1.34%
1986 G 36% James Thompson* (R) 30,831 73.0% Adlai Stevenson III (Illinois Solidarity) 9,921 23.5% 1,454 [+] 3.4% 42,206 20 1.34%
1984 S2 55% Charles Percy* (R) 40,846 66.3% Paul Simon (D) 18,968 30.8% 1,806 [+] 2.9% 61,620 18 1.29%
1982 G 38% James Thompson* (R) 29,343 72.7% Adlai Stevenson III (D) 10,181 25.2% 818 [+] 2.0% 40,342 23 1.10%
1980 S3 60% David O'Neal (R) 35,407 58.2% Alan Dixon (D) 24,409 40.1% 1,052 [+] 1.7% 60,868 16 1.33%
1978 S2 39% Charles Percy* (R) 23,158 65.9% Alex Seith (D) 11,460 32.6% 515 [+] 1.5% 35,133 13 1.10%
1978 G 39% James Thompson* (R) 27,477 78.3% Michael Bakalis (D) 7,362 21.0% 252 [+] 0.7% 35,091 19 1.11%
1976 G 64% James Thompson (R) 45,280 82.6% Michael Howlitt (D) 9,341 17.0% 223 [+] 0.4% 54,844 18 1.18%
1974 S3 38% George Burditt (R) 15,882 51.3% Adlai Stevenson III* (D) 14,881 48.1% 201 [+] 0.6% 30,964 14 1.06%
1972 S2 62% Charles Percy* (R) 34,936 73.6% Roman Pucinski (D) 12,427 26.2% 129 [+] 0.3% 47,492 11 1.03%
1972 G 63% Richard Ogilvie* (R) 29,879 62.1% Daniel Walker (D) 18,178 37.8% 59 [+] 0.1% 48,116 13 1.03%
1970 S3 51% Ralph Smith* (R) 19,681 57.3% Adlai Stevenson III (D) 14,468 42.1% 183 [+] 0.5% 34,332 15 0.95%
1968 S3 65% Everett Dirksen* (R) 28,416 69.9% William Clark (D) 11,803 29.0% 449 [+] 1.1% 40,668 17 0.91%
1968 G 65% Richard Ogilvie (R) 28,114 68.6% Samuel Shapiro* (D) 12,355 30.2% 493 [+] 1.2% 40,962 17 0.91%
1966 S2 55% Charles Percy (R) 24,028 72.8% Paul Douglas* (D) 8,971 27.2% 0 0.0% 32,999 18 0.86%
1964 G 71% Charles Percy (R) 25,597 63.8% Otto Kerner* (D) 14,538 36.2% 0 0.0% 40,135 16 0.86%
1962 S3 54% Everett Dirksen* (R) 20,105 70.6% Sidney Yates (D) 8,356 29.4% 0 0.0% 28,461 18 0.77%
1960 S2 76% Samuel Witwer (R) 23,352 61.7% Paul Douglas* (D) 14,454 38.2% 42 [+] 0.1% 37,848 17 0.82%
1960 G 77% William Stratton* (R) 22,203 58.2% Otto Kerner (D) 15,905 41.7% 54 [+] 0.1% 38,162 14 0.82%
*: 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 McHenry County, IL

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

DateDistrictWinnerRunner-Up OtherTotal Votes
2022-11-08 IL09Jan Schakowsky* (D) 17,145 52.0% Max Rice (R) 15,833 48.0% 0 0.0% 32,978
2022-11-08 IL10Joseph Severino (R) 10,888 60.5% Brad Schneider* (D) 7,123 39.5% 0 0.0% 18,011
2022-11-08 IL11Catalina Lauf (R) 31,384 51.6% Bill Foster* (D) 29,452 48.4% 0 0.0% 60,836
County Total for 2022-11-08:   111,825
2020-11-03 IL06Sean Casten* (D) 23,771 50.1% Jeanne Ives (R) 22,440 47.3% 1,197 2.5% 47,408
2020-11-03 IL14Jim Oberweis (R) 60,653 53.1% Lauren Underwood* (D) 53,625 46.9% 6 0.0% 114,284
County Total for 2020-11-03:   161,692
2018-11-06 IL06Sean Casten (D) 18,857 53.7% Peter Roskam* (R) 16,247 46.3% 0 0.0% 35,104
2018-11-06 IL14Lauren Underwood (D) 41,016 50.3% Randy Hultgren* (R) 40,481 49.7% 0 0.0% 81,497
County Total for 2018-11-06:   116,601
2016-11-08 IL06Peter Roskam* (R) 23,979 58.3% Amanda Howland (D) 17,156 41.7% 0 0.0% 41,135
2016-11-08 IL14Randy Hultgren* (R) 60,109 61.3% Jim Walz (D) 37,897 38.7% 0 0.0% 98,006
County Total for 2016-11-08:   139,141
2014-11-04 IL06Peter Roskam* (R) 17,054 64.3% Michael Mason (D) 9,461 35.7% 0 0.0% 26,515
2014-11-04 IL14Randy Hultgren* (R) 41,850 64.9% Dennis Anderson (D) 22,624 35.1% 0 0.0% 64,474
County Total for 2014-11-04:   90,989
2012-11-06 IL06Peter Roskam* (R) 21,197 55.8% Leslie Coolidge (D) 16,798 44.2% 0 0.0% 37,995
2012-11-06 IL14Randy Hultgren* (R) 52,079 57.7% Dennis Anderson (D) 38,109 42.3% 0 0.0% 90,188
County Total for 2012-11-06:   128,183
2010-11-02 IL08Joe Walsh (R) 19,119 52.4% Melissa Bean* (D) 15,774 43.3% 1,573 4.3% 36,466
2010-11-02 IL16Donald Manzullo* (R) 39,227 68.5% George Gaulrapp (D) 15,595 27.2% 2,411 4.2% 57,233
County Total for 2010-11-02:   93,699
2008-11-04 IL08Melissa Bean* (D) 28,306 55.5% Steve Greenberg (R) 22,703 44.5% 0 0.0% 51,009
2008-11-04 IL16Donald Manzullo* (R) 51,130 61.4% Robert Abboud (D) 29,205 35.0% 2,993 3.6% 83,328
County Total for 2008-11-04:   134,337
2006-11-07 IL08Melissa Bean* (D) 14,640 46.8% David McSweeney (R) 14,597 46.7% 2,022 6.5% 31,259
2006-11-07 IL16Donald Manzullo* (R) 33,044 66.2% Richard Auman (D) 16,825 33.7% 76 0.2% 49,945
County Total for 2006-11-07:   81,204
2004-11-02 IL08Phil Crane* (R) 23,700 51.3% Melissa Bean (D) 22,480 48.7% 0 0.0% 46,180
2004-11-02 IL16Donald Manzullo* (R) 53,685 69.9% John Kutsch (D) 23,145 30.1% 1 0.0% 76,831
County Total for 2004-11-02:   123,011
2002-11-05 IL08Phil Crane* (R) 17,481 60.7% Melissa Bean (D) 11,310 39.3% 1 0.0% 28,792
2002-11-05 IL16Donald Manzullo* (R) 33,286 72.3% John Kutsch (D) 12,747 27.7% 0 0.0% 46,033
County Total for 2002-11-05:   74,825
2000-11-07 IL16Donald Manzullo* (R) 71,202 70.6% Charles Hendrickson (D) 29,695 29.4% 25 0.0% 100,922
County Total for 2000-11-07:   100,922
1998-11-03 IL16Donald Manzullo* (R) 54,487 100.0% 0 0.0% 54,487
County Total for 1998-11-03:   54,487
1996-11-05 IL16Donald Manzullo* (R) 48,366 60.2% Catherine Lee (D) 31,908 39.7% 2 0.0% 80,276
County Total for 1996-11-05:   80,276
1994-11-08 IL16Donald Manzullo* (R) 43,099 75.3% Pete Sullivan (D) 14,137 24.7% 0 0.0% 57,236
County Total for 1994-11-08:   57,236
1992-11-03 IL16Donald Manzullo (R) 55,659 65.5% John Cox* (D) 29,356 34.5% 0 0.0% 85,015
County Total for 1992-11-03:   85,015
*: incumbent           sp: special election           RO: runoff election

Voter Registration Data for McHenry County, IL

Party registration is not used in this state, however as of 2022 registrations in McHenry County, IL were estimated to be 30% Republican and 24% Democrat.

YearTotalRepublicanDemocratOtherR/D EdgeR/D Edge %VAPOP %
2022 226,709 0 0.0% 0 0.0% 226,709 100.0% n/a n/a 95%
2020 237,640 0 0.0% 0 0.0% 237,640 100.0% n/a n/a 100%
2018 228,936 0 0.0% 0 0.0% 228,936 100.0% n/a n/a 97%
2016 217,152 0 0.0% 0 0.0% 217,152 100.0% n/a n/a 93%
2012 203,225 0 0.0% 0 0.0% 203,225 100.0% n/a n/a 89%
2010 202,033 0 0.0% 0 0.0% 202,033 100.0% n/a n/a 90%
2008 199,378 0 0.0% 0 0.0% 199,378 100.0% n/a n/a 92%
2006 186,323 0 0.0% 0 0.0% 186,323 100.0% n/a n/a 90%
2004 186,394 0 0.0% 0 0.0% 186,394 100.0% n/a n/a 94%
2000 161,637 0 0.0% 0 0.0% 161,637 100.0% n/a n/a 89%
1994 107,189 0 0.0% 0 0.0% 107,189 100.0% n/a n/a 71%
1986 82,262 0 0.0% 0 0.0% 82,262 100.0% n/a n/a 70%
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.