County record · fips 06097 · California
SonomaCA
Democratic ×10 since 1988all 40 elections, 1868–2024
The Long Record
40 elections against the California and national vote
2024 result
D+47.8
won by Democrats
Record since first cycle
19–21
Dem–Rep two-party wins
Voted with the winner
24/40
60% of its elections
Closest election
1976
R+0.2
this countyCalifornianational (official)dot colour = two-party winner · hollow = tie or unknown total · click a dot to open that election
The Biggest Swings
Cycle-over-cycle change in the two-party margin, in points
| Election | Swing | Toward |
|---|---|---|
| 1912 | +125.3 pts | Democrats |
| 1872 | -109.1 pts | Republicans |
| 1916 | -106.5 pts | Republicans |
| 1876 | +103.6 pts | Democrats |
| 1928 | +48.6 pts | Democrats |
Who Lives Here
Census & ACS county profile, 2024
Population
485,040
College (BA+)
38%
Median income
$104,674
2024 dollars
Non-white
42%
Rural
14%
Age 65+
22%
Interpolated between Census/ACS anchors; income CPI-deflated to 2024. Demographics begin in 2000 — earlier cycles have returns only.
Neighbouring counties
Lake, CA · Marin, CA · Mendocino, CA · Napa, CA · Solano, CA