County Elections Office
Find voter registration, ballots, voting locations and local election information.[17]
Source checked October 14, 2026[1]sonomacounty.ca.gov
Opens this office’s own website. CountyWiki does not process applications, take payments or provide personal records.
Contact details & office locations ↓Online services & information
These links were found on official source pages. Each service is handled by the office.
Use the Secretary of State’s voter registration application. Read the requirements, identification alternatives and conditional registration guidance below.
Before you start
- Eligibility & access
- To register to vote in California, you must be: A United States citizen and a resident of California (for information on voters in the military or overseas, please see Military and Overseas Voters), 18 years old or older on Election Day, Not currently serving a state or federal prison term for the conviction of a felony (for more information, please see Voting Rights Restored: Persons with a Prior Felony Conviction), and Not currently found mentally incompetent to vote by a court (for more information, please see Voting Rights: Persons Subject to Conservatorship). [5]
- Information & documents
- You must provide: A California Driver's License or state ID number, or The last four digits of your Social Security Number (SSN) (if you do not have a CA ID). If you don't have either, you can still register. You'll be assigned a unique identifier to validate your registration. [6]
- Deadlines
- In California, the deadline to register to vote for any election is 15 days before Election Day, so please register early! [7]
- Deadlines
- In elections conducted by your county elections official, you can “conditionally” register and vote at your county elections office after the 15-day voter registration deadline. For more information please go to Same Day Voter Registration. [8]
- Languages
- You can apply to register to vote right now by filling in the online application. The application is available in English, Spanish, Chinese, Hindi, Japanese, Khmer, Korean, Tagalog, Thai, and Vietnamese. [9]
- Availability
- If you are enrolled in California's confidential address program, Safe At Home, please do not apply to register to vote using this site. Contact the Safe At Home program toll-free at (877) 322-5227 or by the Safe At Home email. [10]
- Eligibility & access
- To pre-register to vote in California, you must: Be 16 or 17 years old, and Meet all of the other eligibility requirements to vote. You will automatically be registered to vote on your 18th birthday. [12]
California Secretary of State public location finder. Choose Sonoma to check listed services and opening dates for the November 3, 2026 election. This is a shared state tool; confirm your assigned voting location with your county.
How to get started
- Choose your county in the official finder.
- Check the service and its voting or drop-off hours before visiting.
- Use your county election office for assigned precinct and ballot questions.
Before you start
- Deadlines · November 3, 2026 general election
- Online registration deadline: October 19, 2026. [14]
Through November 3, 2026
- Deadlines · November 3, 2026 general election
- Mailed ballots must be postmarked by November 3, 2026. Secure drop-box ballots must be deposited by 8:00 p.m. that day. See each listing for its own hours. [15]
Through November 3, 2026
- Availability · November 3, 2026 general election
- VCA counties’ first vote centers open October 24. Early in-person locations throughout California open October 31; individual locations and services have different dates. [16]
Through November 3, 2026
Sonoma voting & ballot drop-off map
November 3, 2026 election
Search the locations published in the California Secretary of State’s county finder. Check each service’s dates and hours. A drop box may offer no in-person voting; a listing does not establish your assigned precinct.
54 listings · 54 map points
Select a point for its details, or browse the accessible list below. Locations may share an address and have different services or hours.
Bluebird Center - Drive-thru DB
25 Bluebird Dr Windsor,CA 95492
- Ballot Drop-Off Location
- 24-Hour Ballot Drop Off Location
- Ballot drop-off hours
- October 6 - November 2: Open 24 Hours Election Day: 12:00AM-7:59PM
Source & last checked
California Secretary of State · Checked October 15, 2026
Open official source ↗Sonoma selected in the public county finder; page 1; result 1 of 55
WindsorBluebird Center - Drive-thru DB25 Bluebird Dr Windsor,CA 95492 Get Directions Ballot Drop-Off Location 24-Hour Ballot Drop Off Location October 6 - November 2: Open 24 Hours Election Day: 12:00AM-7:59PM
Bodega Bay Fire Station - Drive-thru DB
510 S Hwy 1 Bodega Bay,CA 94923
- Ballot Drop-Off Location
- 24-Hour Ballot Drop Off Location
- Ballot drop-off hours
- October 6 - November 2: Open 24 Hours Election Day: 12:00AM-7:59PM
Source & last checked
California Secretary of State · Checked October 15, 2026
Open official source ↗Sonoma selected in the public county finder; page 1; result 2 of 55
Bodega BayBodega Bay Fire Station - Drive-thru DB510 S Hwy 1 Bodega Bay,CA 94923 Get Directions Ballot Drop-Off Location 24-Hour Ballot Drop Off Location October 6 - November 2: Open 24 Hours Election Day: 12:00AM-7:59PM
Bodega Bay Grange #777
1370 Bodega Ave Bodega Bay,CA 94923
- Early Voting
- Same Day Voter Registration
- Ballot Drop-Off Location
- Voting hours
- October 31 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
- Ballot drop-off hours
- October 31 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
Source & last checked
California Secretary of State · Checked October 15, 2026
Open official source ↗Sonoma selected in the public county finder; page 1; result 3 of 55
Bodega BayBodega Bay Grange #7771370 Bodega Ave Bodega Bay,CA 94923 Get Directions Early Voting Same Day Voter Registration Ballot Drop-Off Location October 31 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM October 31 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
Casa Grande High School
333 Casa Grande Rd Petaluma,CA 94954
- Early Voting
- Same Day Voter Registration
- Ballot Drop-Off Location
- Voting hours
- October 31 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
- Ballot drop-off hours
- October 31 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
Source & last checked
California Secretary of State · Checked October 15, 2026
Open official source ↗Sonoma selected in the public county finder; page 1; result 4 of 55
PetalumaCasa Grande High School333 Casa Grande Rd Petaluma,CA 94954 Get Directions Early Voting Same Day Voter Registration Ballot Drop-Off Location October 31 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM October 31 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
Cloverdale Veterans Bldg - Walk-Up DB
205 W 1st St Cloverdale,CA 95425
- Ballot Drop-Off Location
- 24-Hour Ballot Drop Off Location
- Ballot drop-off hours
- October 6 - November 2: Open 24 Hours Election Day: 12:00AM-7:59PM
Source & last checked
California Secretary of State · Checked October 15, 2026
Open official source ↗Sonoma selected in the public county finder; page 1; result 5 of 55
CloverdaleCloverdale Veterans Bldg - Walk-Up DB205 W 1st St Cloverdale,CA 95425 Get Directions Ballot Drop-Off Location 24-Hour Ballot Drop Off Location October 6 - November 2: Open 24 Hours Election Day: 12:00AM-7:59PM
Cloverdale Veterans Memorial Building
205 W 1st St Cloverdale,CA 95425
- Early Voting
- Same Day Voter Registration
- Ballot Drop-Off Location
- Voting hours
- October 31 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
- Ballot drop-off hours
- October 31 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
Source & last checked
California Secretary of State · Checked October 15, 2026
Open official source ↗Sonoma selected in the public county finder; page 1; result 6 of 55
CloverdaleCloverdale Veterans Memorial Building205 W 1st St Cloverdale,CA 95425 Get Directions Early Voting Same Day Voter Registration Ballot Drop-Off Location October 31 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM October 31 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
Cotati Veterans Bldg - Walk-Up DB
8505 Park Ave Cotati,CA 94931
- Ballot Drop-Off Location
- 24-Hour Ballot Drop Off Location
- Ballot drop-off hours
- October 6 - November 2: Open 24 Hours Election Day: 12:00AM-7:59PM
Source & last checked
California Secretary of State · Checked October 15, 2026
Open official source ↗Sonoma selected in the public county finder; page 1; result 7 of 55
CotatiCotati Veterans Bldg - Walk-Up DB8505 Park Ave Cotati,CA 94931 Get Directions Ballot Drop-Off Location 24-Hour Ballot Drop Off Location October 6 - November 2: Open 24 Hours Election Day: 12:00AM-7:59PM
Cotati Veterans Memorial Building
8505 Park Ave Cotati,CA 94931
- Early Voting
- Same Day Voter Registration
- Ballot Drop-Off Location
- Voting hours
- October 31 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
- Ballot drop-off hours
- October 31 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
Source & last checked
California Secretary of State · Checked October 15, 2026
Open official source ↗Sonoma selected in the public county finder; page 1; result 8 of 55
CotatiCotati Veterans Memorial Building8505 Park Ave Cotati,CA 94931 Get Directions Early Voting Same Day Voter Registration Ballot Drop-Off Location October 31 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM October 31 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
County Board Of Sups - Drive-thru DB
575 Administration Dr Santa Rosa,CA 95403
- Ballot Drop-Off Location
- 24-Hour Ballot Drop Off Location
- Ballot drop-off hours
- October 6 - November 2: Open 24 Hours Election Day: 12:00AM-7:59PM
Source & last checked
California Secretary of State · Checked October 15, 2026
Open official source ↗Sonoma selected in the public county finder; page 1; result 9 of 55
Santa RosaCounty Board Of Sups - Drive-thru DB575 Administration Dr Santa Rosa,CA 95403 Get Directions Ballot Drop-Off Location 24-Hour Ballot Drop Off Location October 6 - November 2: Open 24 Hours Election Day: 12:00AM-7:59PM
Duncans Mills Fire Station - Walk-Up DB
24900 Hwy 116 Duncans Mills,CA 95465
- Ballot Drop-Off Location
- 24-Hour Ballot Drop Off Location
- Ballot drop-off hours
- October 6 - November 2: Open 24 Hours Election Day: 12:00AM-7:59PM
Source & last checked
California Secretary of State · Checked October 15, 2026
Open official source ↗Sonoma selected in the public county finder; page 1; result 10 of 55
Duncans MillsDuncans Mills Fire Station - Walk-Up DB24900 Hwy 116 Duncans Mills,CA 95465 Get Directions Ballot Drop-Off Location 24-Hour Ballot Drop Off Location October 6 - November 2: Open 24 Hours Election Day: 12:00AM-7:59PM
Elsie Allen High School
599 Bellevue Ave Santa Rosa,CA 95407
- Early Voting
- Same Day Voter Registration
- Ballot Drop-Off Location
- Voting hours
- October 31 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
- Ballot drop-off hours
- October 31 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
Source & last checked
California Secretary of State · Checked October 15, 2026
Open official source ↗Sonoma selected in the public county finder; page 1; result 11 of 55
Santa RosaElsie Allen High School599 Bellevue Ave Santa Rosa,CA 95407 Get Directions Early Voting Same Day Voter Registration Ballot Drop-Off Location October 31 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM October 31 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
Faith Lutheran Church Of Sonoma Valley
19355 Arnold Dr Sonoma,CA 95476
- Early Voting
- Same Day Voter Registration
- Ballot Drop-Off Location
- Voting hours
- October 24 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
- Ballot drop-off hours
- October 24 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
Source & last checked
California Secretary of State · Checked October 15, 2026
Open official source ↗Sonoma selected in the public county finder; page 1; result 12 of 55
SonomaFaith Lutheran Church Of Sonoma Valley19355 Arnold Dr Sonoma,CA 95476 Get Directions Early Voting Same Day Voter Registration Ballot Drop-Off Location October 24 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM October 24 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
Fees
Fees are quoted only when a source document supports the amount and conditions.
Check the official website for its current fee schedule. No fee should be assumed to be free.
Forms & documents
Official forms and document pages for this office’s services.
Sources & last checked5 source pages · 17 citations
Sources were checked by an AI-assisted research process. A checked website does not mean every service or fee on it has been reviewed.
- [1] County elections offices directory (opens in a new tab)
California Secretary of State · Sonoma County — elections; official directory or office heading
Source reviewed October 14, 2026View supporting excerpt
Sonoma Evelyn Mendez, Registrar of Voters 3880 Brickway Blvd Santa Rosa, CA 95403 Mailing Address: P.O. Box 11485 Santa Rosa, CA 95406-1485 (707) 565-6800 (800) 750-8683 (707) 565-6843 Fax Hours: 8:00 a.m. - 5:00 p.m. sonomacounty.ca.gov/administrative-support-and-fiscal-services/clerk-recorder-assessor-registrar-of-voters/registrar-of-voters E-Mail: rov-info@sonomacounty.gov
- [2] County elections offices directory (opens in a new tab)
California Secretary of State · Sonoma — elections telephone, excluding fax
Source reviewed October 14, 2026View supporting excerpt
Sonoma Evelyn Mendez, Registrar of Voters 3880 Brickway Blvd Santa Rosa, CA 95403 Mailing Address: P.O. Box 11485 Santa Rosa, CA 95406-1485 (707) 565-6800 (800) 750-8683 (707) 565-6843 Fax Hours: 8:00 a.m. - 5:00 p.m. sonomacounty.ca.gov/administrative-support-and-fiscal-services/clerk-recorder-assessor-registrar-of-voters/registrar-of-voters E-Mail: rov-info@sonomacounty.gov
- [3] County elections offices directory (opens in a new tab)
California Secretary of State · Sonoma — physical block before Mailing Address
Source reviewed October 14, 2026View supporting excerpt
Sonoma Evelyn Mendez, Registrar of Voters 3880 Brickway Blvd Santa Rosa, CA 95403 Mailing Address: P.O. Box 11485 Santa Rosa, CA 95406-1485 (707) 565-6800 (800) 750-8683 (707) 565-6843 Fax Hours: 8:00 a.m. - 5:00 p.m. sonomacounty.ca.gov/administrative-support-and-fiscal-services/clerk-recorder-assessor-registrar-of-voters/registrar-of-voters E-Mail: rov-info@sonomacounty.gov
- [4] County elections offices directory (opens in a new tab)
California Secretary of State · Sonoma — source-listed hours; no inferred weekdays
Source reviewed October 14, 2026View supporting excerpt
Sonoma Evelyn Mendez, Registrar of Voters 3880 Brickway Blvd Santa Rosa, CA 95403 Mailing Address: P.O. Box 11485 Santa Rosa, CA 95406-1485 (707) 565-6800 (800) 750-8683 (707) 565-6843 Fax Hours: 8:00 a.m. - 5:00 p.m. sonomacounty.ca.gov/administrative-support-and-fiscal-services/clerk-recorder-assessor-registrar-of-voters/registrar-of-voters E-Mail: rov-info@sonomacounty.gov
- [5] Voter registration — requirements and official online portal (opens in a new tab)
California Secretary of State · Qualifications to Register to Vote — all four conditions, including referenced exceptions
Source reviewed October 14, 2026View supporting excerpt
To register to vote in California, you must be: A United States citizen and a resident of California (for information on voters in the military or overseas, please see Military and Overseas Voters), 18 years old or older on Election Day, Not currently serving a state or federal prison term for the conviction of a felony (for more information, please see Voting Rights Restored: Persons with a Prior Felony Conviction), and Not currently found mentally incompetent to vote by a court (for more information, please see Voting Rights: Persons Subject to Conservatorship).
- [6] Voter registration — requirements and official online portal (opens in a new tab)
California Secretary of State · Voter Registration Identification Requirements — includes the option to register without either ID number
Source reviewed October 14, 2026View supporting excerpt
You must provide: A California Driver's License or state ID number, or The last four digits of your Social Security Number (SSN) (if you do not have a CA ID). If you don't have either, you can still register. You'll be assigned a unique identifier to validate your registration.
- [7] Voter registration — requirements and official online portal (opens in a new tab)
California Secretary of State · General registration deadline; conditional registration is separately shown
Source reviewed October 14, 2026View supporting excerpt
In California, the deadline to register to vote for any election is 15 days before Election Day, so please register early!
- [8] Voter registration — requirements and official online portal (opens in a new tab)
California Secretary of State · Same Day Voter Registration (Conditional Voter Registration) — late-registration alternative
Source reviewed October 14, 2026View supporting excerpt
In elections conducted by your county elections official, you can “conditionally” register and vote at your county elections office after the 15-day voter registration deadline. For more information please go to Same Day Voter Registration.
- [9] Voter registration — requirements and official online portal (opens in a new tab)
California Secretary of State · Languages of the statewide online application; not a claim about county-office interpretation
Source reviewed October 14, 2026View supporting excerpt
You can apply to register to vote right now by filling in the online application. The application is available in English, Spanish, Chinese, Hindi, Japanese, Khmer, Korean, Tagalog, Thai, and Vietnamese.
- [10] Voter registration — requirements and official online portal (opens in a new tab)
California Secretary of State · Safe At Home participants — confidential registration contact
Source reviewed October 14, 2026View supporting excerpt
If you are enrolled in California's confidential address program, Safe At Home, please do not apply to register to vote using this site. Contact the Safe At Home program toll-free at (877) 322-5227 or by the Safe At Home email.
- [11] Voter registration — requirements and official online portal (opens in a new tab)
California Secretary of State · Register to vote online — statewide instructions linked to the separately cited county office
Source reviewed October 14, 2026View supporting excerpt
Register to Vote Now
- [12] Voter registration — requirements and official online portal (opens in a new tab)
California Secretary of State · Qualifications to Pre-register to Vote — 16- and 17-year-olds and automatic registration at 18
Source reviewed October 14, 2026View supporting excerpt
To pre-register to vote in California, you must: Be 16 or 17 years old, and Meet all of the other eligibility requirements to vote. You will automatically be registered to vote on your 18th birthday.
- [13] Early voting and vote-by-mail ballot drop-off location finder (opens in a new tab)
California Secretary of State · Definitions above the county search
Source reviewed October 15, 2026View supporting excerpt
Definition of services available: Early Voting: A voter may pick up and/or vote a vote-by-mail ballot at this location. Same Day Voter Registration: Voters can conditionally register and vote after the 15-day voter registration deadline at this location. For more information please go to Same Day Voter Registration Ballot Drop-Off: A secured box where vote-by-mail ballots may be dropped off.
- [14] Voting — general-2026 (opens in a new tab)
California Secretary of State · Vote Early, California — registration deadline
Source reviewed October 15, 2026View supporting excerpt
The last day to register to vote online for November 3, 2026, General Election is October 19.
- [15] Early voting and vote-by-mail ballot drop-off location finder (opens in a new tab)
California Secretary of State · Current election — ballot return deadlines
Source reviewed October 15, 2026View supporting excerpt
Ballots returned by mail must be postmarked by November 3, 2026; ballots returned at a secure ballot drop box must be deposited by 8:00 p.m. on November 3, 2026.
- [16] Voting — general-2026 (opens in a new tab)
California Secretary of State · Vote Early, California — VCA and statewide early voting dates
Source reviewed October 15, 2026View supporting excerpt
The first vote centers open for early in-person voting in all Voter’s Choice Act counties on October 24. In-person early voting locations throughout California will be open on Saturday, October 31.
- [17] Voting — counties (opens in a new tab)
California Secretary of State · Sonoma county election office entry
Source reviewed October 15, 2026View supporting excerpt
Sonoma Evelyn Mendez, Registrar of Voters 3880 Brickway Blvd Santa Rosa, CA 95403 Mailing Address: P.O. Box 11485 Santa Rosa, CA 95406-1485 (707) 565-6800 (800) 750-8683 (707) 565-6843 Fax Hours: 8:00 a.m. - 5:00 p.m. sonomacounty.ca.gov/administrative-support-and-fiscal-services/clerk-recorder-assessor-registrar-of-voters/registrar-of-voters E-Mail: rov-info@sonomacounty.gov