County record · FIPS 06097
Sonoma County, CA
A joined view of reported 2024 election administration and the 2020–2024 American Community Survey profile for California.
Population485,040ACS 2020–2024
Registered voters358,631100% jurisdiction coverage
Voters258,450100% jurisdiction coverage
Registered turnout72.07%Reported voters / registration
Ballot administration
Mail-ballot record
| Stage | Reported ballots | Jurisdiction coverage |
|---|---|---|
| Transmitted | 317,533 | 100% |
| Returned | 235,848 | 100% |
| Counted | 234,189 | 100% |
| Rejected | 1,659 | 100% |
Return rate74.28%
Rejection rate0.70%
A blank means the source did not provide enough information. It does not mean zero ballots.
Administrative capacity
Election infrastructure
Polling places31100% coverage
Poll workers297100% coverage
Drop boxes22100% coverage
Provisional ballots cast4,861100% coverage
Provisional acceptance99.42%Counted / cast where reported
Cross-state twin
Sonoma County, CA ↔ Kane County, IL
77.1% profile similarityPopulation485,040517,255
Median household income$104,674$103,163
Poverty8.89%7.91%
No vehicle4.83%4.65%
The closest profile among counties in other states. Similarity uses seven ACS measures and does not include vote choice.
Reported detail
Mail rejection reasons
| Reason | Ballots |
|---|---|
| Signature mismatch | 999 |
| Late | 334 |
| Missing signature | 262 |
| Missing documentation | 32 |
| Deceased | 8 |
| Already voted | 2 |