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Siskiyou County, CA


Designated Market Area: Medford-Klamath Falls, OR-CA
American Communities Project County Type (2023): Graying America

Places in Siskiyou County, CA     [Sort places by name]

 

Tracts in Siskiyou County, CA

   



Click here to view demographic data for Siskiyou County, CA

2024 population: 42,498   ( 1,581 from 2020)
Land area: 6278.7 square miles
Population density: 6.8 persons per square mile

2024 Census data
White:31,244 73.52% 6.3%
Black:5331.25% 9.7%
Indian:1,6753.94% 3.0%
Asian:9432.22% 26.2%
2+ races:2,0514.83% 1.0%
Hispanic:6,05214.24% 8.3%
Total non-White:11,25426.48% 5.0%

2020-2024 ComponentsNumberRate
Births:1,501 8.5
Deaths:2,71715.4
Net Migration: -536-3.0
Net Immigration: 1811.0
Change in White population:-2,114 -4.8
Change in Non-White pop.:533 1.2



Historical Presidential Election Results for Siskiyou County, CA

Recent Trends
VotesΔ MarginSwing %
2024 vs. 2020 R -829 R +435 R + 3.7%
D -1,264
2024 vs. 2016 R +1,120 R +25 D + 2.2%
D +1,095
2020 vs. 2016 R +1,949 D +410 D + 6.0%
D +2,359
2024 vs. 2012 R +1,384 R +1,101 R + 4.0%
D +283
2016 vs. 2008 R -179 R +1,879 R + 11.4%
D -2,058
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 63% Donald Trump (R) 12,461 58.0% Kamala Harris (D) 8,329 38.7% 708 [+] 3.3% 21,498 20 8 0.14%
2020 67% Donald Trump* (R) 13,290 56.6% Joe Biden (D) 9,593 40.9% 589 [+] 2.5% 23,472 22 10 0.13%
2016 58% Donald Trump (R) 11,341 55.3% Hillary Clinton (D) 7,234 35.3% 1,918 [+] 9.4% 20,493 24 9 0.14%
2012 56% Mitt Romney (R) 11,077 55.4% Barack Obama* (D) 8,046 40.2% 870 [+] 4.4% 19,993 18 8 0.15%
2008 61% John McCain (R) 11,520 53.4% Barack Obama (D) 9,292 43.1% 752 [+] 3.5% 21,564 17 8 0.16%
2004 61% George W. Bush* (R) 12,673 60.6% John Kerry (D) 7,880 37.7% 346 [+] 1.7% 20,899 16 10 0.17%
2000 59% George W. Bush (R) 12,198 61.5% Albert Gore, Jr. (D) 6,323 31.9% 1,298 [+] 6.5% 19,819 20 14 0.18%
1996 55% Robert Dole (R) 8,653 47.3% Bill Clinton* (D) 7,022 38.4% 2,618 [+] 14.3% 18,293 9 7 0.18%
1992 64% Bill Clinton (D) 8,254 39.9% George Bush* (R) 6,660 32.2% 5,765 [+] 27.9% 20,679 0 -5 0.19%
1988 57% George Bush (R) 9,056 50.9% Michael Dukakis (D) 8,365 47.0% 376 [+] 2.1% 17,797 0 -3 0.18%
1984 60% Ronald Reagan* (R) 10,544 58.3% Walter Mondale (D) 7,130 39.4% 427 2.4% 18,101 1 -1 0.19%
1980 58% Ronald Reagan (R) 9,331 55.7% Jimmy Carter* (D) 5,664 33.8% 1,743 [+] 10.4% 16,738 3 5 0.19%
1976 59% Gerald Ford* (R) 7,070 48.4% Jimmy Carter (D) 7,060 48.3% 485 [+] 3.3% 14,615 -1 0 0.19%
1972 64% Richard Nixon* (R) 7,563 51.5% George McGovern (D) 6,434 43.8% 699 [+] 4.8% 14,696 -4 -9 0.18%
1968 67% Richard Nixon (R) 6,334 46.1% Hubert Humphrey (D) 6,260 45.6% 1,138 [+] 8.3% 13,732 -2 3 0.19%
1964 71% Lyndon Johnson* (D) 9,126 63.7% Barry Goldwater (R) 5,186 36.2% 23 0.2% 14,335 -5 -2 0.20%
1960 73% John Kennedy (D) 8,245 56.4% Richard Nixon (R) 6,279 42.9% 96 0.7% 14,620 -7 -7 0.22%
1956 65% Dwight Eisenhower* (R) 6,841 49.8% Adlai Stevenson (D) 6,837 49.8% 63 0.5% 13,741 -6 -8 0.25%
1952 76% Dwight Eisenhower (R) 8,735 55.7% Adlai Stevenson (D) 6,800 43.4% 151 1.0% 15,686 -1 0 0.31%
1948 60% Harry Truman* (D) 6,749 54.0% Thomas Dewey (R) 5,315 42.5% 434 [+] 3.5% 12,498 -5 -3 0.31%
1944 51% Franklin Roosevelt* (D) 5,914 57.3% Thomas Dewey (R) 4,351 42.1% 58 0.6% 10,323 -1 -4 0.29%
1940 62% Franklin Roosevelt* (D) 7,714 63.2% Wendell Willkie (R) 4,387 35.9% 111 0.9% 12,212 -5 -9 0.37%
1936 55% Franklin Roosevelt* (D) 6,865 69.3% Alf Landon (R) 2,919 29.5% 125 [+] 1.3% 9,909 -2 -7 0.38%
1932 53% Franklin Roosevelt (D) 6,367 69.3% Herbert Hoover* (R) 2,458 26.8% 359 [+] 3.9% 9,184 -11 -13 0.40%
1928 43% Herbert Hoover (R) 3,758 55.5% Al Smith (D) 2,916 43.1% 98 [+] 1.4% 6,772 -9 -3 0.38%
1924 43% Robert LaFollette (Prog) 2,844 47.4% Calvin Coolidge (R) 2,437 40.6% 724 [+] 12.1% 6,005 -17 -13 0.47%
1920 40% Warren Harding (R) 2,909 60.1% James Cox (D) 1,502 31.0% 433 [+] 8.9% 4,844 -6 0 0.51%
1916 48% Woodrow Wilson* (D) 3,447 57.1% Charles Evans Hughes (R) 2,059 34.1% 526 [+] 8.7% 6,032 -12 -12 0.60%
1912 39% Woodrow Wilson (D) 2,465 49.6% Theodore Roosevelt (Prog) 1,740 35.0% 768 [+] 15.4% 4,973 0 -23 0.73%
1908 32% William Taft (R) 1,813 47.4% William J. Bryan (D) 1,657 43.3% 355 [+] 9.3% 3,825 -8 -4 0.99%
1904 31% Theodore Roosevelt (R) 2,104 59.7% Alton Parker (D) 1,219 34.6% 203 [+] 5.8% 3,526 -2 3 1.06%
1900 33% William McKinley* (R) 1,898 52.4% William J. Bryan (D) 1,668 46.0% 59 [+] 1.6% 3,625 -2 1 1.20%
* incumbent         PSV: percent of state vote

Historical Statewide Election Results for Siskiyou County, CA

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

YearTypeTurnout WinnerRunner-Up OtherTotal VotesDiff PSV
2024 S1 62% Steve Garvey (R) 12,958 61.6% Adam Schiff (D) 8,087 38.4% 0 0.0% 21,045 20 0.14%
2022 S3 51% Mark Meuser (R) 10,607 60.6% Alex Padilla* (D) 6,892 39.4% 0 0.0% 17,499 22 0.16%
2022 G 52% Brian Dahle (R) 11,397 64.3% Gavin Newsom* (D) 6,326 35.7% 0 0.0% 17,723 23 0.16%
2018 S1 42% Kevin DeLeon (D) 8,930 60.7% Dianne Feinstein* (D) 5,772 39.3% 0 0.0% 14,702 n/a 0.13%
2018 G 51% John Cox (R) 10,946 60.3% Gavin Newsom (D) 7,218 39.7% 0 0.0% 18,164 22 0.15%
2016 S3 43% Kamala Harris (D) 8,744 57.5% Loretta Sanchez (D) 6,457 42.5% 0 0.0% 15,201 n/a 0.12%
2014 G 39% Neel Kashkari (R) 7,717 55.8% Jerry Brown* (D) 6,103 44.2% 0 0.0% 13,820 16 0.19%
2012 S1 55% Elizabeth Emken (R) 11,334 58.0% Dianne Feinstein* (D) 8,196 42.0% 0 0.0% 19,530 21 0.16%
2010 S3 51% Carly Fiorina (R) 10,430 57.2% Barbara Boxer* (D) 6,132 33.6% 1,683 [+] 9.2% 18,245 15 0.18%
2010 G 52% Meg Whitman (R) 9,839 53.5% Jerry Brown (D) 7,274 39.6% 1,265 [+] 6.9% 18,378 13 0.18%
2006 S1 47% Dick Mountjoy (R) 8,433 51.5% Dianne Feinstein* (D) 6,752 41.2% 1,203 [+] 7.3% 16,388 16 0.19%
2006 G 48% Arnold Schwarzenegger* (R) 10,916 65.6% Phil Angelides (D) 4,615 27.7% 1,100 [+] 6.6% 16,631 10 0.19%
2004 S3 60% Bill Jones (R) 11,308 55.0% Barbara Boxer* (D) 8,215 39.9% 1,054 [+] 5.1% 20,577 17 0.17%
2003 G 45% Arnold Schwarzenegger (R) 8,974 58.6% Cruz Bustamante (D) 3,070 20.0% 3,278 [+] 21.4% 15,322 30 0.18%
2002 G 46% Bill Simon (R) 9,112 58.4% Gray Davis* (D) 4,972 31.9% 1,517 [+] 9.7% 15,601 16 0.21%
2000 S1 58% Tom Campbell (R) 10,048 51.6% Dianne Feinstein* (D) 7,476 38.4% 1,946 [+] 10.0% 19,470 15 0.18%
1998 S3 47% Matt Fong (R) 8,669 55.2% Barbara Boxer* (D) 6,162 39.2% 882 [+] 5.6% 15,713 12 0.19%
1998 G 49% Dan Lungren (R) 8,100 49.2% Gray Davis (D) 7,493 45.5% 861 [+] 5.2% 16,454 11 0.20%
1994 S1 55% Michael Huffington (R) 10,040 55.5% Dianne Feinstein* (D) 6,256 34.6% 1,795 [+] 9.9% 18,091 11 0.21%
1994 G 56% Pete Wilson* (R) 11,075 60.2% Kathleen Brown (D) 6,053 32.9% 1,279 [+] 6.9% 18,407 5 0.21%
1992 S3 62% Bruce Herschensohn (R) 9,568 47.9% Barbara Boxer (D) 8,115 40.6% 2,306 [+] 11.5% 19,989 5 0.19%
1992 S1 63% John Seymour (R) 9,180 45.4% Dianne Feinstein (D) 8,963 44.3% 2,067 [+] 10.2% 20,210 7 0.19%
1990 G 50% Pete Wilson (R) 8,320 52.6% Dianne Feinstein (D) 6,346 40.1% 1,147 [+] 7.3% 15,813 3 0.21%
1988 S1 57% Pete Wilson* (R) 9,448 52.8% Leo McCarthy (D) 7,577 42.4% 855 [+] 4.8% 17,880 0 0.18%
1986 S3 50% Ed Zschau (R) 7,369 48.0% Alan Cranston* (D) 7,328 47.8% 649 [+] 4.2% 15,346 0 0.21%
1986 G 51% George Deukmejian* (R) 10,515 68.0% Tom Bradley (D) 4,584 29.6% 375 [+] 2.4% 15,474 7 0.21%
1982 S1 55% Pete Wilson (R) 9,312 58.0% Jerry Brown (D) 5,640 35.1% 1,096 [+] 6.8% 16,048 6 0.21%
1982 G 55% George Deukmejian (R) 9,457 58.4% Tom Bradley (D) 6,009 37.1% 728 [+] 4.5% 16,194 9 0.21%
1980 S3 56% Alan Cranston* (D) 8,742 54.5% Paul Gann (R) 6,029 37.6% 1,282 [+] 8.0% 16,053 0 0.19%
1978 G 52% Jerry Brown* (D) 6,851 51.1% Evelle Younger (R) 5,747 42.9% 806 [+] 6.0% 13,404 6 0.19%
1976 S1 58% John Tunney* (D) 6,968 48.2% Sam Hayakawa (R) 6,933 48.0% 551 [+] 3.8% 14,452 -2 0.19%
1974 S3 49% Alan Cranston* (D) 7,234 61.5% Bill Richardson (R) 4,034 34.3% 499 [+] 4.2% 11,767 -2 0.19%
1974 G 51% Jerry Brown (D) 6,515 53.9% Houston Flournoy (R) 5,229 43.3% 337 [+] 2.8% 12,081 -4 0.19%
1970 S1 59% John Tunney (D) 7,005 57.4% George Murphy* (R) 4,929 40.4% 260 [+] 2.1% 12,194 -4 0.19%
1970 G 60% Ronald Reagan* (R) 6,092 49.6% Jess Unruh (D) 5,920 48.2% 276 [+] 2.2% 12,288 -3 0.19%
1968 S3 66% Alan Cranston (D) 7,922 58.5% Max Rafferty (R) 5,441 40.2% 176 [+] 1.3% 13,539 -7 0.19%
1966 G 64% Ronald Reagan (R) 7,057 54.2% Pat Brown* (D) 5,962 45.8% 9 [+] 0.1% 13,028 -3 0.20%
1964 S1 71% Pierre Salinger* (D) 7,682 53.6% George Murphy (R) 6,646 46.4% 4 [+] 0.0% 14,332 -5 0.20%
1962 S3 61% Thomas Kuchel* (R) 6,880 55.7% Richard Richards (D) 5,445 44.1% 17 [+] 0.1% 12,342 -1 0.22%
1962 G 64% Pat Brown* (D) 7,718 60.0% Richard Nixon (R) 4,942 38.4% 208 [+] 1.6% 12,868 -8 0.22%
*: 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 Siskiyou County, CA

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

DateDistrictWinnerRunner-Up OtherTotal Votes
2024-11-05 CA01Doug LaMalfa* (R) 13,229 62.7% Rose Yee (D) 7,865 37.3% 0 0.0% 21,094
County Total for 2024-11-05:   21,094
2022-11-08 CA01Doug LaMalfa* (R) 10,714 60.7% Max Steiner (D) 6,929 39.3% 0 0.0% 17,643
County Total for 2022-11-08:   17,643
2020-11-03 CA01Doug LaMalfa* (R) 13,155 56.3% Audrey Denney (D) 10,198 43.7% 0 0.0% 23,353
County Total for 2020-11-03:   23,353
2018-11-06 CA01Doug LaMalfa* (R) 9,792 53.9% Audrey Denney (D) 8,391 46.1% 0 0.0% 18,183
County Total for 2018-11-06:   18,183
2016-11-08 CA01Doug LaMalfa* (R) 12,337 61.0% Jim Reed (D) 7,877 39.0% 0 0.0% 20,214
County Total for 2016-11-08:   20,214
2014-11-04 CA01Doug LaMalfa* (R) 8,928 64.6% Heidi Hall (D) 4,884 35.4% 0 0.0% 13,812
County Total for 2014-11-04:   13,812
2012-11-06 CA01Doug LaMalfa (R) 11,715 60.5% Jim Reed (D) 7,644 39.5% 0 0.0% 19,359
County Total for 2012-11-06:   19,359
2010-11-02 CA02Wally Herger* (R) 10,361 57.6% Jim Reed (D) 7,613 42.4% 0 0.0% 17,974
County Total for 2010-11-02:   17,974
2008-11-04 CA02Wally Herger* (R) 11,701 56.4% Jeff Morris (D) 9,056 43.6% 0 0.0% 20,757
County Total for 2008-11-04:   20,757
2006-11-07 CA02Wally Herger* (R) 10,479 63.6% A.J. Sekhon (D) 5,467 33.2% 540 3.3% 16,486
County Total for 2006-11-07:   16,486
2004-11-02 CA02Wally Herger* (R) 13,920 68.5% Mike Johnson (D) 6,387 31.5% 0 0.0% 20,307
County Total for 2004-11-02:   20,307
2002-11-05 CA02Wally Herger* (R) 10,379 67.1% Mike Johnson (D) 4,138 26.8% 949 6.1% 15,466
County Total for 2002-11-05:   15,466
2000-11-07 CA02Wally Herger* (R) 13,081 66.8% Stan Morgan (D) 5,129 26.2% 1,380 7.0% 19,590
County Total for 2000-11-07:   19,590
1998-11-03 CA02Wally Herger* (R) 9,691 62.0% Rob Braden (D) 5,460 34.9% 491 3.1% 15,642
County Total for 1998-11-03:   15,642
1996-11-05 CA02Wally Herger* (R) 11,378 60.7% Rob Braden (D) 6,150 32.8% 1,210 6.5% 18,738
County Total for 1996-11-05:   18,738
1994-11-08 CA02Wally Herger* (R) 11,801 64.8% Mary Jacobs (D) 5,197 28.5% 1,218 6.7% 18,216
County Total for 1994-11-08:   18,216
1992-11-03 CA02Wally Herger* (R) 12,900 64.2% Elliot Freedman (D) 6,242 31.0% 967 4.8% 20,109
County Total for 1992-11-03:   20,109
*: incumbent           sp: special election           RO: runoff election

Voter Registration Data for Siskiyou County, CA

YearTotalRepublicanDemocratOtherR/D EdgeR/D Edge %VAPOP %
2025 28,131 12,242 43.5% 7,663 27.2% 8,226 29.2% Rep +4,579 Rep +16.3% 82%
2024 27,965 12,053 43.1% 7,902 28.3% 8,010 28.6% Rep +4,151 Rep +14.8% 82%
2022 28,725 11,849 41.2% 8,351 29.1% 8,525 29.7% Rep +3,498 Rep +12.2% 84%
2020 29,240 11,913 40.7% 8,856 30.3% 8,471 29.0% Rep +3,057 Rep +10.5% 86%
2018 27,566 10,437 37.9% 8,274 30.0% 8,855 32.1% Rep +2,163 Rep +7.8% 80%
2016 27,619 10,743 38.9% 8,655 31.3% 8,221 29.8% Rep +2,088 Rep +7.6% 80%
2014 24,840 9,917 39.9% 7,738 31.2% 7,185 28.9% Rep +2,179 Rep +8.8% 71%
2012 25,868 10,602 41.0% 8,387 32.4% 6,879 26.6% Rep +2,215 Rep +8.6% 73%
2010 25,919 10,617 41.0% 8,777 33.9% 6,525 25.2% Rep +1,840 Rep +7.1% 73%
2008 26,643 10,959 41.1% 9,435 35.4% 6,249 23.5% Rep +1,524 Rep +5.7% 76%
2006 24,968 10,562 42.3% 8,863 35.5% 5,543 22.2% Rep +1,699 Rep +6.8% 72%
2004 27,287 11,355 41.6% 9,867 36.2% 6,065 22.2% Rep +1,488 Rep +5.5% 79%
2002 25,223 10,517 41.7% 9,542 37.8% 5,164 20.5% Rep +975 Rep +3.9% 74%
2000 25,297 10,409 41.1% 10,124 40.0% 4,764 18.8% Rep +285 Rep +1.1% 75%
1998 24,461 9,833 40.2% 10,643 43.5% 3,985 16.3% Dem +810 Dem +3.3% 73%
1996 25,915 10,354 40.0% 11,428 44.1% 4,133 15.9% Dem +1,074 Dem +4.1% 79%
1994 24,990 9,577 38.3% 11,866 47.5% 3,547 14.2% Dem +2,289 Dem +9.2% 77%
1992 25,645 9,428 36.8% 12,653 49.3% 3,564 13.9% Dem +3,225 Dem +12.6% 80%
1990 23,692 8,952 37.8% 11,906 50.3% 2,834 12.0% Dem +2,954 Dem +12.5% 74%
1986 22,699 8,493 37.4% 11,619 51.2% 2,587 11.4% Dem +3,126 Dem +13.8% 74%
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.