RightDataUSA

Jefferson County, PA


Designated Market Area: Johnstown-Altoona-State College, PA
USDA County Type (2025): Manufacturing, Low Education
American Communities Project County Type (2023): Rural Middle America

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

 

Tracts in Jefferson County, PA

   



Click here to view demographic data for Jefferson County, PA

2024 population: 43,367   ( 1,124 from 2020)
Land area: 652.4 square miles
Population density: 66.5 persons per square mile

2024 Census data
White:41,936 96.70% 3.0%
Black:1930.45% 6.6%
Indian:720.17% 8.9%
Asian:2000.46% 60.0%
2+ races:5031.16% 18.9%
Hispanic:4631.07% 7.7%
Total non-White:1,4313.30% 15.6%

2020-2024 ComponentsNumberRate
Births:1,886 10.6
Deaths:2,65514.9
Net Migration: -426-2.4
Net Immigration: 660.4
Change in White population:-1,317 -3.0
Change in Non-White pop.:193 0.4



Historical Presidential Election Results for Jefferson County, PA

Recent Trends
VotesΔ MarginSwing %
2024 vs. 2020 R +271 R +93 D + 0.8%
D +178
2024 vs. 2016 R +3,043 R +1,986 D + 2.3%
D +1,057
2020 vs. 2016 R +2,772 R +1,893 D + 1.5%
D +879
2024 vs. 2012 R +5,187 R +5,267 R + 12.6%
D -80
2016 vs. 2008 R +3,135 R +5,932 R + 30.9%
D -2,797
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 68% Donald Trump (R) 18,235 78.7% Kamala Harris (D) 4,707 20.3% 241 [+] 1.0% 23,183 28 29 0.33%
2020 65% Donald Trump* (R) 17,964 78.5% Joe Biden (D) 4,529 19.8% 379 [+] 1.7% 22,872 30 32 0.33%
2016 56% Donald Trump (R) 15,192 77.5% Hillary Clinton (D) 3,650 18.6% 753 [+] 3.8% 19,595 29 32 0.32%
2012 51% Mitt Romney (R) 13,048 71.8% Barack Obama* (D) 4,787 26.3% 343 [+] 1.9% 18,178 25 25 0.32%
2008 53% John McCain (R) 12,057 63.8% Barack Obama (D) 6,447 34.1% 408 [+] 2.2% 18,912 20 18 0.31%
2004 55% George W. Bush* (R) 13,371 68.4% John Kerry (D) 6,073 31.0% 116 [+] 0.6% 19,560 20 18 0.34%
2000 50% George W. Bush (R) 11,473 65.2% Albert Gore, Jr. (D) 5,566 31.7% 547 [+] 3.1% 17,586 19 17 0.36%
1996 47% Robert Dole (R) 8,156 49.6% Bill Clinton* (D) 5,846 35.5% 2,455 [+] 14.9% 16,457 10 9 0.37%
1992 51% George Bush* (R) 7,271 41.1% Bill Clinton (D) 5,998 33.9% 4,442 [+] 25.1% 17,711 5 4 0.36%
1988 47% George Bush (R) 9,743 60.5% Michael Dukakis (D) 6,235 38.7% 131 [+] 0.8% 16,109 10 7 0.36%
1984 50% Ronald Reagan* (R) 11,334 65.3% Walter Mondale (D) 5,950 34.3% 71 0.4% 17,355 12 7 0.36%
1980 48% Ronald Reagan (R) 9,628 57.4% Jimmy Carter* (D) 6,296 37.5% 854 [+] 5.1% 16,778 8 7 0.37%
1976 55% Gerald Ford* (R) 9,437 55.1% Jimmy Carter (D) 7,456 43.5% 237 [+] 1.4% 17,130 7 7 0.37%
1972 56% Richard Nixon* (R) 11,631 68.9% George McGovern (D) 5,024 29.8% 221 [+] 1.3% 16,876 10 8 0.37%
1968 68% Richard Nixon (R) 10,214 55.7% Hubert Humphrey (D) 6,839 37.3% 1,294 [+] 7.1% 18,347 12 12 0.39%
1964 69% Lyndon Johnson* (D) 10,851 56.3% Barry Goldwater (R) 8,373 43.5% 37 0.2% 19,261 9 5 0.40%
1960 76% Richard Nixon (R) 13,845 63.8% John Kennedy (D) 7,811 36.0% 38 0.2% 21,694 15 14 0.43%
1956 64% Dwight Eisenhower* (R) 13,051 66.3% Adlai Stevenson (D) 6,627 33.6% 19 0.1% 19,697 10 9 0.43%
1952 58% Dwight Eisenhower (R) 11,833 64.6% Adlai Stevenson (D) 6,365 34.8% 116 0.6% 18,314 12 9 0.40%
1948 49% Thomas Dewey (R) 9,395 61.4% Harry Truman* (D) 5,632 36.8% 268 [+] 1.8% 15,295 10 16 0.41%
1944 54% Thomas Dewey (R) 10,970 62.5% Franklin Roosevelt* (D) 6,425 36.6% 152 0.9% 17,547 14 17 0.46%
1940 62% Wendell Willkie (R) 12,081 58.4% Franklin Roosevelt* (D) 8,559 41.4% 47 0.2% 20,687 12 14 0.51%
1936 76% Alf Landon (R) 11,943 51.2% Franklin Roosevelt* (D) 11,080 47.5% 283 [+] 1.2% 23,306 10 15 0.56%
1932 53% Herbert Hoover* (R) 8,246 52.5% Franklin Roosevelt (D) 6,570 41.8% 897 [+] 5.7% 15,713 2 13 0.55%
1928 58% Herbert Hoover (R) 13,233 74.6% Al Smith (D) 4,325 24.4% 173 [+] 1.0% 17,731 9 16 0.56%
1924 51% Calvin Coolidge (R) 10,673 64.9% John Davis (D) 2,664 16.2% 3,113 [+] 18.9% 16,450 0 11 0.77%
1920 34% Warren Harding (R) 7,970 66.7% James Cox (D) 3,060 25.6% 920 [+] 7.7% 11,950 1 6 0.65%
1916 24% Charles Evans Hughes (R) 4,332 51.7% Woodrow Wilson* (D) 3,253 38.9% 788 [+] 9.4% 8,373 -3 6 0.65%
1912 24% Theodore Roosevelt (Prog) 3,501 40.6% Woodrow Wilson (D) 2,510 29.1% 2,611 [+] 30.3% 8,622 -4 -5 0.71%
1908 27% William Taft (R) 5,652 60.2% William J. Bryan (D) 2,986 31.8% 755 [+] 8.0% 9,393 1 9 0.74%
1904 25% Theodore Roosevelt (R) 5,860 69.1% Alton Parker (D) 2,095 24.7% 527 [+] 6.2% 8,482 1 13 0.69%
1900 29% William McKinley* (R) 5,950 62.4% William J. Bryan (D) 3,063 32.1% 525 [+] 5.5% 9,538 2 11 0.81%
* incumbent         PSV: percent of state vote

Historical Statewide Election Results for Jefferson County, PA

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

YearTypeTurnout WinnerRunner-Up OtherTotal VotesDiff PSV
2024 S1 68% Dave McCormick (R) 17,618 76.3% Bob Casey, Jr.* (D) 4,834 20.9% 626 [+] 2.7% 23,078 28 0.33%
2022 S3 52% Mehmet Oz (R) 13,139 73.9% John Fetterman (D) 4,135 23.2% 512 [+] 2.9% 17,786 28 0.33%
2022 G 52% Doug Mastriano (R) 12,433 69.8% Josh Shapiro (D) 5,038 28.3% 349 [+] 2.0% 17,820 28 0.33%
2018 S1 44% Lou Barletta (R) 10,872 69.8% Bob Casey, Jr.* (D) 4,437 28.5% 267 [+] 1.7% 15,576 27 0.31%
2018 G 44% Scott Wagner (R) 11,036 70.9% Tom Wolf* (D) 4,277 27.5% 261 [+] 1.7% 15,574 30 0.31%
2016 S3 55% Pat Toomey* (R) 13,706 71.0% Katie McGinty (D) 4,160 21.5% 1,451 [+] 7.5% 19,317 22 0.32%
2014 G 34% Tom Corbett* (R) 7,458 63.0% Tom Wolf (D) 4,375 37.0% 0 0.0% 11,833 18 0.34%
2012 S1 51% Tom Smith (R) 12,780 70.7% Bob Casey, Jr.* (D) 4,878 27.0% 428 [+] 2.4% 18,086 26 0.32%
2010 S3 37% Pat Toomey (R) 9,326 70.6% Joe Sestak (D) 3,882 29.4% 0 0.0% 13,208 20 0.33%
2010 G 38% Tom Corbett (R) 10,017 74.5% Dan Onorato (D) 3,420 25.5% 0 0.0% 13,437 20 0.34%
2006 S1 40% Rick Santorum* (R) 7,731 54.6% Bob Casey, Jr. (D) 6,424 45.4% 0 0.0% 14,155 13 0.35%
2006 G 40% Lynn Swann (R) 8,774 61.9% Ed Rendell* (D) 5,402 38.1% 0 0.0% 14,176 22 0.35%
2004 S3 54% Arlen Specter* (R) 11,782 61.5% Joseph Hoeffel (D) 5,294 27.6% 2,087 [+] 10.9% 19,163 9 0.34%
2002 G 37% Mike Fisher (R) 8,745 67.7% Ed Rendell (D) 3,879 30.0% 299 [+] 2.3% 12,923 23 0.36%
2000 S1 49% Rick Santorum* (R) 11,370 65.8% Ron Klink (D) 5,361 31.0% 552 [+] 3.2% 17,283 13 0.36%
1998 S3 32% Arlen Specter* (R) 7,161 64.3% Bill Lloyd (D) 3,433 30.8% 551 [+] 4.9% 11,145 3 0.38%
1998 G 32% Tom Ridge* (R) 6,493 58.1% Ivan Itkin (D) 2,473 22.1% 2,213 [+] 19.8% 11,179 1 0.37%
1994 S1 39% Rick Santorum (R) 8,077 59.8% Harris Wofford* (D) 4,616 34.2% 823 [+] 6.1% 13,516 10 0.38%
1994 G 39% Tom Ridge (R) 7,151 52.9% Mark Singel (D) 4,063 30.1% 2,297 [+] 17.0% 13,511 8 0.38%
1992 S3 51% Arlen Specter* (R) 8,923 50.6% Lynn Yeakel (D) 7,107 40.3% 1,616 [+] 9.2% 17,646 1 0.37%
1991 S1 42% Richard Thornburgh (R) 7,865 55.0% Harris Wofford (D) 6,445 45.0% 0 0.0% 14,310 10 0.42%
1990 G 35% Robert Casey* (D) 8,117 67.4% Barbara Hafer (R) 3,918 32.6% 0 0.0% 12,035 0 0.39%
1988 S1 47% John Heinz* (R) 12,472 77.3% Joseph Vignola (D) 3,518 21.8% 137 [+] 0.8% 16,127 11 0.37%
1986 S3 36% Arlen Specter* (R) 6,907 55.8% Bob Edgar (D) 5,369 43.4% 92 [+] 0.7% 12,368 -1 0.37%
1986 G 41% William Scranton III (R) 7,171 50.4% Robert Casey (D) 6,947 48.8% 122 [+] 0.9% 14,240 2 0.42%
1982 S1 39% John Heinz* (R) 8,964 66.0% Cyril Wecht (D) 4,503 33.2% 108 [+] 0.8% 13,575 7 0.38%
1982 G 39% Richard Thornburgh* (R) 7,435 54.9% Allen Ertel (D) 6,037 44.6% 76 [+] 0.6% 13,548 4 0.37%
1980 S3 49% Pete Flaherty (D) 8,966 53.3% Arlen Specter (R) 7,736 46.0% 124 [+] 0.7% 16,826 -5 0.38%
1978 G 44% Pete Flaherty (D) 7,289 51.1% Richard Thornburgh (R) 6,896 48.4% 69 [+] 0.5% 14,254 -4 0.38%
1976 S1 55% John Heinz (R) 10,473 61.1% William Green (D) 6,599 38.5% 72 [+] 0.4% 17,144 9 0.38%
1974 S3 48% Richard Schweiker* (R) 7,369 50.3% Pete Flaherty (D) 7,215 49.2% 71 [+] 0.5% 14,655 -3 0.42%
1974 G 47% Andrew Lewis (R) 8,320 57.1% Milton Shapp* (D) 6,145 42.1% 115 [+] 0.8% 14,580 12 0.42%
1970 S1 55% Hugh Scott* (R) 8,885 58.8% William Sesler (D) 5,996 39.7% 226 [+] 1.5% 15,107 7 0.41%
1970 G 55% Raymond Broderick (R) 7,564 50.1% Milton Shapp (D) 7,192 47.7% 331 [+] 2.2% 15,087 8 0.41%
1968 S3 67% Richard Schweiker (R) 11,878 65.4% Joseph Clark* (D) 6,085 33.5% 202 [+] 1.1% 18,165 13 0.39%
1966 G 61% Raymond Shafer (R) 10,099 60.4% Milton Shapp (D) 6,484 38.8% 135 [+] 0.8% 16,718 8 0.41%
1964 S1 69% Hugh Scott* (R) 11,496 59.6% Genevieve Blatt (D) 7,757 40.2% 48 [+] 0.2% 19,301 9 0.40%
1962 S3 73% James Van Zandt (R) 12,030 58.6% Joseph Clark* (D) 8,465 41.3% 18 [+] 0.1% 20,513 10 0.47%
1962 G 73% William Scranton (R) 12,948 63.2% Richardson Dilworth (D) 7,524 36.7% 30 [+] 0.1% 20,502 8 0.47%
*: 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, PA

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

DateDistrictWinnerRunner-Up OtherTotal Votes
2024-11-05 PA15Glenn Thompson* (R) 18,514 81.7% Zach Womer (D) 4,138 18.3% 0 0.0% 22,652
County Total for 2024-11-05:   22,652
2022-11-08 PA15Glenn Thompson* (R) 14,189 80.3% Michael Molesevich (D) 3,485 19.7% 0 0.0% 17,674
County Total for 2022-11-08:   17,674
2020-11-03 PA15Glenn Thompson* (R) 18,492 81.8% Robert Williams (D) 4,118 18.2% 0 0.0% 22,610
County Total for 2020-11-03:   22,610
2018-11-06 PA15Glenn Thompson* (R) 12,214 78.4% Susan Boser (D) 3,358 21.6% 0 0.0% 15,572
County Total for 2018-11-06:   15,572
2016-11-08 PA05Glenn Thompson* (R) 14,792 77.0% Kerith Taylor (D) 4,428 23.0% 0 0.0% 19,220
County Total for 2016-11-08:   19,220
2014-11-04 PA05Glenn Thompson* (R) 8,525 71.8% Kerith Taylor (D) 3,345 28.2% 0 0.0% 11,870
County Total for 2014-11-04:   11,870
2012-11-06 PA05Glenn Thompson* (R) 13,354 74.9% Charles Dumas (D) 4,484 25.1% 0 0.0% 17,838
County Total for 2012-11-06:   17,838
2010-11-02 PA05Glenn Thompson* (R) 10,007 74.8% Michael Pipe (D) 2,948 22.0% 427 3.2% 13,382
County Total for 2010-11-02:   13,382
2008-11-04 PA05Glenn Thompson (R) 11,234 60.5% Mark McCracken (D) 6,950 37.5% 370 2.0% 18,554
County Total for 2008-11-04:   18,554
2006-11-07 PA05John Peterson* (R) 8,333 59.5% Donald Hilliard (D) 5,665 40.5% 0 0.0% 13,998
County Total for 2006-11-07:   13,998
2004-11-02 PA05John Peterson* (R) 15,725 90.3% Tom Martin (Libertarian) 1,694 9.7% 0 0.0% 17,419
County Total for 2004-11-02:   17,419
2002-11-05 PA05John Peterson* (R) 10,573 89.2% Tom Martin (Libertarian) 1,277 10.8% 0 0.0% 11,850
County Total for 2002-11-05:   11,850
2000-11-07 PA05John Peterson* (R) 13,531 88.7% William Belitskus (Green) 1,120 7.3% 600 3.9% 15,251
County Total for 2000-11-07:   15,251
1996-11-05 PA05John Peterson (R) 10,229 63.5% Ruth Rudy (D) 5,880 36.5% 0 0.0% 16,109
County Total for 1996-11-05:   16,109
1994-11-08 PA05Bill Clinger* (R) 12,526 100.0% 0 0.0% 12,526
County Total for 1994-11-08:   12,526
1992-11-03 PA05Bill Clinger* (R) 16,188 100.0% 0 0.0% 16,188
County Total for 1992-11-03:   16,188
*: incumbent           sp: special election           RO: runoff election

Voter Registration Data for Jefferson County, PA

YearTotalRepublicanDemocratOtherR/D EdgeR/D Edge %VAPOP %
2025 28,027 19,480 69.5% 5,405 19.3% 3,142 11.2% Rep +14,075 Rep +50.2% 82%
2024 28,812 19,757 68.6% 5,812 20.2% 3,243 11.3% Rep +13,945 Rep +48.4% 84%
2022 28,129 18,699 66.5% 6,359 22.6% 3,071 10.9% Rep +12,340 Rep +43.9% 82%
2020 32,040 20,009 62.5% 8,372 26.1% 3,659 11.4% Rep +11,637 Rep +36.3% 94%
2018 29,810 17,357 58.2% 9,008 30.2% 3,445 11.6% Rep +8,349 Rep +28.0% 87%
2016 29,923 16,968 56.7% 9,579 32.0% 3,376 11.3% Rep +7,389 Rep +24.7% 86%
2014 28,674 15,421 53.8% 10,064 35.1% 3,189 11.1% Rep +5,357 Rep +18.7% 82%
2012 28,544 15,297 53.6% 10,327 36.2% 2,920 10.2% Rep +4,970 Rep +17.4% 81%
2010 27,924 14,768 52.9% 10,523 37.7% 2,633 9.4% Rep +4,245 Rep +15.2% 79%
2008 30,073 15,541 51.7% 11,790 39.2% 2,742 9.1% Rep +3,751 Rep +12.5% 85%
2006 29,142 15,359 52.7% 11,281 38.7% 2,502 8.6% Rep +4,078 Rep +14.0% 83%
2004 28,847 15,212 52.7% 11,288 39.1% 2,347 8.1% Rep +3,924 Rep +13.6% 82%
2002 26,810 13,991 52.2% 10,803 40.3% 2,016 7.5% Rep +3,188 Rep +11.9% 76%
2000 25,892 13,444 51.9% 10,628 41.0% 1,820 7.0% Rep +2,816 Rep +10.9% 74%
1998 24,328 12,581 51.7% 10,310 42.4% 1,437 5.9% Rep +2,271 Rep +9.3% 70%
1996 23,406 12,138 51.9% 10,100 43.2% 1,168 5.0% Rep +2,038 Rep +8.7% 67%
1994 21,177 10,703 50.5% 9,686 45.7% 788 3.7% Rep +1,017 Rep +4.8% 61%
1992 21,186 10,771 50.8% 9,710 45.8% 705 3.3% Rep +1,061 Rep +5.0% 62%
1990 20,246 10,744 53.1% 8,935 44.1% 567 2.8% Rep +1,809 Rep +8.9% 59%
1988 20,315 11,011 54.2% 8,679 42.7% 625 3.1% Rep +2,332 Rep +11.5% 59%
1986 21,066 11,265 53.5% 9,081 43.1% 720 3.4% Rep +2,184 Rep +10.4% 61%
1984 21,310 11,291 53.0% 9,263 43.5% 756 3.5% Rep +2,028 Rep +9.5% 62%
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.