Siskiyou County, California: Industrial Catholic Metro county. In 2024, voted R+19%. Democratic peak: D+50 in 1912.
Key facts
- 2024 presidential margin
- R+19MIT Election Lab
- Political typology
- Industrial Catholic MetroAkashic typology
- Population
- 43,4662024 5-year
- Median household income
- $59,0952024 5-year
- White (non-Hispanic)
- 77.5%2024 5-year
- Black
- 1.4%2024 5-year
- Hispanic / Latino
- 13.5%2024 5-year
- Peak Democratic margin
- D+50 in 1912MIT Election Lab
- Peak Republican margin
- R+31 in 1924MIT Election Lab
- Most similar
- Okanogan County, WA · similarity 0.99
2024 results by precinct
2024 precinct map of Siskiyou CountyPrecinct-level 2024 presidential results for Siskiyou County, with each precinct boundary colored by Democratic-vs-Republican margin.
—
Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | +9.1% |
| 1880 | +5.8% |
| 1884 | +7.7% |
| 1888 | +3.4% |
| 1892 | +3.5% |
| 1896 | +7.7% |
| 1900 | −6.3% |
| 1904 | −25.1% |
| 1908 | −4.1% |
| 1912 | +49.6% |
| 1916 | +23.0% |
| 1920 | −29.0% |
| 1924 | −30.9% |
| 1928 | −12.4% |
| 1932 | +42.6% |
| 1936 | +39.8% |
| 1940 | +27.2% |
| 1944 | +15.1% |
| 1948 | +11.5% |
| 1952 | −12.6% |
| 1956 | −0.0% |
| 1960 | +13.4% |
| 1964 | +27.5% |
| 1968 | −0.5% |
| 1972 | −7.7% |
| 1976 | −0.1% |
| 1980 | −21.9% |
| 1984 | −18.9% |
| 1988 | −3.9% |
| 1992 | +7.7% |
| 1996 | −8.9% |
| 2000 | −29.6% |
| 2004 | −22.9% |
| 2008 | −10.3% |
| 2012 | −15.2% |
| 2016 | −20.0% |
| 2020 | −15.8% |
| 2024 | −19.2% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 8,329 | 12,461 | 21,498 | ||
| R | 9,593 | 13,290 | 23,472 | ||
| R | 7,234 | 11,341 | 20,493 | ||
| R | 8,046 | 11,077 | 19,993 | ||
| R | 9,292 | 11,520 | 21,564 | ||
| R | 7,880 | 12,673 | 20,899 | ||
| R | 6,323 | 12,198 | 19,819 | ||
| R | 7,022 | 8,653 | 18,293 | ||
| D | 8,254 | 6,660 | 20,679 | ||
| R | 8,365 | 9,056 | 17,797 | ||
| R | 7,130 | 10,544 | 18,101 | ||
| R | 5,664 | 9,331 | 16,738 | ||
| R | 7,060 | 7,070 | 14,615 | ||
| R | 6,434 | 7,563 | 14,696 | ||
| R | 6,260 | 6,334 | 13,732 | ||
| D | 9,126 | 5,186 | 14,335 | ||
| D | 8,245 | 6,279 | 14,620 | ||
| R | 6,837 | 6,841 | 13,741 | ||
| R | 6,346 | 8,195 | 14,684 | ||
| D | 6,749 | 5,315 | 12,498 | ||
| D | 5,914 | 4,351 | 10,323 | ||
| D | 7,714 | 4,387 | 12,212 | ||
| D | 6,865 | 2,919 | 9,909 | ||
| D | 6,367 | 2,458 | 9,184 | ||
| R | 2,916 | 3,758 | 6,772 | ||
| O | 584 | 2,437 | 6,005 | ||
| R | 1,502 | 2,909 | 4,844 | ||
| D | 3,447 | 2,059 | 6,032 | ||
| O | 2,465 | 0 | 4,973 | ||
| R | 1,657 | 1,813 | 3,825 | ||
| R | 1,219 | 2,104 | 3,526 | ||
| R | 1,668 | 1,898 | 3,625 | ||
| D | 1,724 | 1,473 | 3,275 | ||
| D | 1,605 | 1,493 | 3,227 | ||
| D | 1,459 | 1,361 | 2,845 | ||
| D | 1,036 | 886 | 1,944 | ||
| D | 900 | 800 | 1,719 | ||
| D | 861 | 718 | 1,579 |
Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
English
15.2%
German
13.2%
Irish
12.5%
Italian
5.6%
American
3.1%
Scottish
3.0%
French
2.6%
African American
1.1%
Multiple ancestry combinations reported; no single grouping above 1%.
American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
2024 ACS
Age distribution by sex
Median age: 47.2 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Median household income
Inflation-adjusted dollars
$59,095
Siskiyou County ranks near the middle of US counties.
Siskiyou County$59,095
California$99,122
United States$80,734
Siskiyou County ranks near the middle of US counties by median household income.
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
16.4%
Children face moderate poverty.
Children under 1820.5%
Working age (18–64)16.0%
Seniors (65+)11.2%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
90.3%
speak English only
Spanish6.7%
Asian & Pacific Islander1.5%
Other Indo-European1.1%
Other languages0.4%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 52.6% of residents not counted as adherents by any reporting body.
Siskiyou spans more than 6,000 square miles of mountains and high desert along the Oregon border, with a small, rural population that has backed Republican presidential candidates by double digits in each of the last several cycles.
Its margins are typically close. The Democratic margin reached fifty points in 1912; the Republican margin reached thirty-one points in 1924. Between 2020 and 2024 the county moved three points toward the Republican candidate; the 2024 margin was nineteen points.
Its demographics sit near national norms: a 78% non-Hispanic-white share, a median household income of $59,095, and a 16% poverty rate. The county's voting pattern over the last decade is most similar to that of Okanogan County and Plumas County.
Most similar counties
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Siskiyou County, California. Akashic. https://akashic.app/county/06093/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More in California
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Frequently asked questions
How did Siskiyou County, California vote in 2024?
In 2024, Siskiyou County, California voted Republican by 19.2 points (R+19), carried by the Republican candidate. Out of 21,498 votes cast, 8,329 went Democratic and 12,461 went Republican.
What is Siskiyou County, California's political typology?
Akashic places Siskiyou County, California in the "Industrial Catholic Metro" typology — Mid-size industrial metros with Catholic ethnic roots — among the most competitive, swing-prone ground in the country. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the county has voted Democratic 15 times, Republican 21 times, and other 2 times.
When did Siskiyou County, California last vote Democratic?
The most recent presidential election in which Siskiyou County, California voted Democratic was 1992.
How many people live in Siskiyou County, California?
Siskiyou County, California has a population of 43,466 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Siskiyou County, California?
Median household income in Siskiyou County, California is $59,095 — below the national median of $80,734. The California state median is $99,122.
What is the political history of Siskiyou County, California?
Akashic tracks 38 presidential elections in Siskiyou County, California from 1876 to 2024. Of those, 15 went Democratic and 21 went Republican. The county's typology — "Industrial Catholic Metro" — captures where that record, its demographics, and its recent swing place it among American communities.