Data as of October 18, 2026 · refreshed automatically from the official California voter file
Sierra County, CA has 2,169 active registered voters — 47.2% Republican, 24.6% Democratic, and 19.5% with no party affiliation, as of October 2026.
Party registration
How Sierra County voted for president
Election results are public records.
Sierra County at a glance.
Sierra County had an estimated 3,113 residents in July 2024, the 57th most populous of California's 58 counties, down 3.8% since the 2020 census. Of those, 2,642 are 18 or older, the voting-age population, and 33.9% are 65 or older. Its 2,169 active registered voters equal about 82.1% of that voting-age population.
It covers 953 square miles of land (3.3 people per square mile), and 77.1% of residents live outside any incorporated city or town. Its one incorporated place is Loyalton (712 residents). The American Community Survey (2020-2024) puts it at a median age of 54.7, a median household income of $63,355, 25.8% of adults 25 and older holding a bachelor's degree or higher and 72.1% of occupied homes owned by the people living in them.
In 2024, 1,754 votes were cast for president, about 66.4% of the voting-age population; the Democratic ticket took 36.5% and the Republican ticket 60.8%. The two-party margin moved from R+20.9 in 2008 to R+24.3 in 2024.
- Population (2024 estimate)
- 3,113
- Population (2020 census base)
- 3,235
- Voting-age population (18+)
- 2,642
- Active voters per 100 adults
- 82.1
- Residents 65 and older
- 33.9%
- People per square mile
- 3.3
- Living outside incorporated places
- 77.1%
- Land area
- 953 sq mi
- Median age
- 54.7
- Median household income
- $63,355
- Adults 25+ with a bachelor's degree
- 25.8%
- Owner-occupied homes
- 72.1%
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 36.5% | 60.8% | R+24.3 | 1,754 |
| 2020 | 37.8% | 59.2% | R+21.4 | 1,930 |
| 2016 | 33.3% | 58.1% | R+24.8 | 1,804 |
| 2012 | 36.6% | 59.4% | R+22.8 | 1,779 |
| 2008 | 37.3% | 58.2% | R+20.9 | 1,991 |
Sources: U.S. Census Bureau Vintage 2024 population estimates and 2024 Gazetteer; American Community Survey 2020–2024 5-year estimates; certified county presidential returns. Growth, density and turnout are simple arithmetic on those figures.
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