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O'Fallon township, IL


St. Clair County, IL

Tracts in this county

   

2022 population: 26,344   ( 291 from 2010 )
Land area: 35.1 square miles
Population density: 750.3 persons per square mile

2022 Census data
White:18,820 71.44% 7.0%
Black:3,50813.32% 3.4%
Indian:160.06% 68.0%
Asian:7032.67% 5.7%
2+ races:1,9047.23% 198.4%
Hispanic:1,3465.11% 67.8%
Total non-White:7,52428.56% 29.4%

2010-2022 ComponentsNumberRate
Change in White population:-1,420 -6.6
Change in Non-White pop.:1,711 8.0



Historical Presidential Election Results for O'Fallon township, IL

Recent Trends
VotesΔ MarginSwing %
2020 vs. 2016 R +282 D +1,394 D + 11.7%
D +1,676
2020 vs. 2012 R +71 D +1,780 D + 14.7%
D +1,851
2020 vs. 2008 R +414 D +774 D + 6.5%
D +1,188
2016 vs. 2008 R +132 R +620 R + 5.2%
D -488
How to interpret this table


Click on the Year to view municipality-level data for this county.
(Some years may be unavailable)

YearTurnout WinnerRunner-Up OtherTotal Votes Diff
(St) 		Diff
(US) 		PSV
2020 74% Donald Trump* (R) 7,512 50.3% Joe Biden (D) 6,979 46.7% 452 3.0% 14,943 10 3 0.25%
2016 69% Donald Trump (R) 7,230 53.2% Hillary Clinton (D) 5,303 39.0% 1,068 7.9% 13,601 15 7 0.24%
2012 66% Mitt Romney (R) 7,441 58.1% Barack Obama* (D) 5,128 40.0% 247 1.9% 12,816 17 11 0.24%
2008 71% John McCain (R) 7,098 54.3% Barack Obama (D) 5,791 44.3% 187 1.4% 13,076 18 9 0.24%
2000 60% George W. Bush (R) 5,588 59.4% Albert Gore, Jr. (D) 3,625 38.5% 202 2.1% 9,415 17 11 0.20%
* incumbent         PSV: percent of state vote



2020 President, O'Fallon township
CandidateVotesPct
Joe Biden (D) 6,979 46.7%
Donald Trump* (R) 7,512 50.3%
Jo Jorgensen (Lbt) 289 1.9%
Other 163 1.1%
TOTAL 14,943
Turnout: 74% Diff (St): 10 Diff (US): 3


2016 President, O'Fallon township
CandidateVotesPct
Hillary Clinton (D) 5,303 39.0%
Donald Trump (R) 7,230 53.2%
Gary Johnson (Lbt) 643 4.7%
Other 425 3.1%
TOTAL 13,601
Turnout: 69% Diff (St): 15 Diff (US): 7


2012 President, O'Fallon township
CandidateVotesPct
Barack Obama* (D) 5,128 40.0%
Mitt Romney (R) 7,441 58.1%
Other 247 1.9%
TOTAL 12,816
Turnout: 66% Diff (St): 17 Diff (US): 11


2008 President, O'Fallon township
CandidateVotesPct
Barack Obama (D) 5,791 44.3%
John McCain (R) 7,098 54.3%
Other 187 1.4%
TOTAL 13,076
Turnout: 71% Diff (St): 18 Diff (US): 9


2000 President, O'Fallon township
CandidateVotesPct
George W. Bush (R) 5,588 59.4%
Albert Gore, Jr. (D) 3,625 38.5%
Ralph Nader (Grn) 144 1.5%
Other 58 0.6%
TOTAL 9,415
Turnout: 60% Diff (St): 17 Diff (US): 11
* incumbent

Historical Statewide Election Results for O'Fallon township, IL

Click on the Year to view county-level data for that election.
(Some years may be unavailable)

YearTypeTurnout WinnerRunner-Up OtherTotal VotesDiff PSV
2022 S3 53% Kathy Salvi (R) 5,440 50.5% Tammy Duckworth* (D) 5,067 47.1% 261 [+] 2.4% 10,768 9 0.26%
2022 G 54% Darren Bailey (R) 5,608 52.0% J.B. Pritzker* (D) 4,786 44.4% 397 [+] 3.7% 10,791 10 0.26%
2020 S2 73% Mark Curran (R) 7,742 52.4% Richard Durbin* (D) 6,538 44.2% 508 [+] 3.4% 14,788 13 0.25%
2018 G 57% Bruce Rauner* (R) 5,871 51.7% J.B. Pritzker (D) 4,839 42.6% 646 [+] 5.7% 11,356 13 0.25%
2016 S3 68% Mark Kirk* (R) 6,868 51.1% Tammy Duckworth (D) 5,907 44.0% 663 [+] 4.9% 13,438 11 0.24%
2014 S2 45% Jim Oberweis (R) 5,268 60.6% Richard Durbin* (D) 3,122 35.9% 309 [+] 3.6% 8,699 18 0.24%
2014 G 44% Bruce Rauner (R) 5,762 66.3% Pat Quinn* (D) 2,554 29.4% 369 [+] 4.2% 8,685 16 0.24%
*: 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