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Janesville city, WI


Rock County, WI

Tracts in this county

   

2022 population: 65,669   ( 2,094 from 2010 )
Land area: 34.2 square miles
Population density: 1922.4 persons per square mile

2022 Census data
White:56,610 86.21% 0.3%
Black:2,1783.32% 38.4%
Indian:730.11% 51.0%
Asian:1,1371.73% 31.1%
2+ races:1,9552.98% 84.4%
Hispanic:3,5725.44% 4.4%
Total non-White:9,05913.79% 27.4%

2010-2022 ComponentsNumberRate
Change in White population:145 0.3
Change in Non-White pop.:1,949 3.7



Historical Presidential Election Results for Janesville city, WI

Recent Trends
VotesΔ MarginSwing %
2020 vs. 2016 R +1,822 D +1,591 D + 2.3%
D +3,413
2020 vs. 2012 R +1,588 R +2,098 R + 7.2%
D -510
2020 vs. 2008 R +3,229 R +4,608 R + 15.9%
D -1,379
2016 vs. 2008 R +1,407 R +6,199 R + 18.1%
D -4,792
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 67% Joe Biden (D) 19,559 58.0% Donald Trump* (R) 13,490 40.0% 660 2.0% 33,709 -9 -7 1.02%
2016 61% Hillary Clinton (D) 16,146 53.8% Donald Trump (R) 11,668 38.9% 2,180 7.3% 29,994 -8 -7 1.01%
2012 67% Barack Obama* (D) 20,069 62.1% Mitt Romney (R) 11,902 36.8% 340 1.1% 32,311 -9 -10 1.05%
2008 67% Barack Obama (D) 20,938 66.1% John McCain (R) 10,261 32.4% 469 1.5% 31,668 -10 -13 1.06%
2004 71% John Kerry (D) 19,436 59.8% George W. Bush* (R) 12,758 39.3% 285 0.9% 32,479 -10 -11 1.08%
2000 64% Albert Gore, Jr. (D) 16,701 59.4% George W. Bush (R) 10,446 37.2% 970 3.4% 28,117 -10 -11 1.08%
* incumbent         PSV: percent of state vote



2020 President, Janesville city
CandidateVotesPct
Joe Biden (D) 19,559 58.0%
Donald Trump* (R) 13,490 40.0%
Jo Jorgensen (Lbt) 456 1.4%
Other 204 0.6%
TOTAL 33,709
Turnout: 67% Diff (St): -9 Diff (US): -7


2016 President, Janesville city
CandidateVotesPct
Hillary Clinton (D) 16,146 53.8%
Donald Trump (R) 11,668 38.9%
Gary Johnson (Lbt) 1,150 3.8%
Other 1,030 3.4%
TOTAL 29,994
Turnout: 61% Diff (St): -8 Diff (US): -7


2012 President, Janesville city
CandidateVotesPct
Barack Obama* (D) 20,069 62.1%
Mitt Romney (R) 11,902 36.8%
Other 340 1.1%
TOTAL 32,311
Turnout: 67% Diff (St): -9 Diff (US): -10


2008 President, Janesville city
CandidateVotesPct
Barack Obama (D) 20,938 66.1%
John McCain (R) 10,261 32.4%
Other 469 1.5%
TOTAL 31,668
Turnout: 67% Diff (St): -10 Diff (US): -13


2004 President, Janesville city
CandidateVotesPct
George W. Bush* (R) 12,758 39.3%
John Kerry (D) 19,436 59.8%
Ralph Nader (I) 154 0.5%
Other 131 0.4%
TOTAL 32,479
Turnout: 71% Diff (St): -10 Diff (US): -11


2000 President, Janesville city
CandidateVotesPct
George W. Bush (R) 10,446 37.2%
Albert Gore, Jr. (D) 16,701 59.4%
Ralph Nader (Grn) 778 2.8%
Other 192 0.7%
TOTAL 28,117
Turnout: 64% Diff (St): -10 Diff (US): -11
* incumbent

Historical Statewide Election Results for Janesville city, WI

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 51% Mandela Barnes (D) 15,457 59.6% Ron Johnson* (R) 10,451 40.3% 45 [+] 0.2% 25,953 -10 0.98%
2022 G 52% Tony Evers* (D) 16,137 61.9% Tim Michels (R) 9,656 37.0% 289 [+] 1.1% 26,082 -11 0.98%
2018 S1 54% Tammy Baldwin* (D) 17,459 64.9% Leah Vukmir (R) 9,409 35.0% 29 [+] 0.1% 26,897 -9 1.01%
2018 G 54% Tony Evers (D) 16,497 61.0% Scott Walker* (R) 9,832 36.4% 709 [+] 2.6% 27,038 -12 1.01%
2016 S3 60% Russ Feingold (D) 17,502 58.8% Ron Johnson* (R) 11,384 38.2% 891 [+] 3.0% 29,777 -12 1.01%
2014 G 48% Mary Burke (D) 13,546 58.1% Scott Walker* (R) 9,405 40.3% 364 [+] 1.6% 23,315 -12 0.97%
*: 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