County Elections Office
Find voter registration, ballots, voting locations and local election information.[17]
Source checked October 14, 2026[1]smcacre.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 San Mateo 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
San Mateo 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.
107 listings · 107 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.
Alice Bulos Community Center
2380 Galway Dr South San Francisco,CA 94080
- 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 ↗San Mateo selected in the public county finder; page 1; result 1 of 107
South San FranciscoAlice Bulos Community Center2380 Galway Dr South San Francisco,CA 94080 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
American Legion Post 105
651 El Camino Real Redwood City,CA 94063
- 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 ↗San Mateo selected in the public county finder; page 1; result 2 of 107
Redwood CityAmerican Legion Post 105651 El Camino Real Redwood City,CA 94063 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
American Legion Post 409
757 San Mateo Ave San Bruno,CA 94066
- Early Voting
- Same Day Voter Registration
- Ballot Drop-Off Location
- Voting hours
- November 1 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
- Ballot drop-off hours
- November 1 - 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 ↗San Mateo selected in the public county finder; page 1; result 3 of 107
San BrunoAmerican Legion Post 409757 San Mateo Ave San Bruno,CA 94066 Get Directions Early Voting Same Day Voter Registration Ballot Drop-Off Location November 1 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM November 1 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
Arrillaga Family Recreation Center
700 Alma St Menlo Park,CA 94025
- 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 ↗San Mateo selected in the public county finder; page 1; result 4 of 107
Menlo ParkArrillaga Family Recreation Center700 Alma St Menlo Park,CA 94025 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
Assessor-County Clerk-Recorder (outside)
555 County Center Redwood City,CA 94063
- Ballot Drop-Off Location
- 24-Hour Ballot Drop Off Location
- Ballot drop-off hours
- October 5 - November 2: Open 24 Hours Election Day: 12:00AM-8:00PM
Source & last checked
California Secretary of State · Checked October 15, 2026
Open official source ↗San Mateo selected in the public county finder; page 1; result 5 of 107
Redwood CityAssessor-County Clerk-Recorder (outside)555 County Center Redwood City,CA 94063 Get Directions Ballot Drop-Off Location 24-Hour Ballot Drop Off Location October 5 - November 2: Open 24 Hours Election Day: 12:00AM-8:00PM
Assessor-County Clerk-Recorder
555 County Center Redwood City,CA 94063
- Early Voting
- Same Day Voter Registration
- Ballot Drop-Off Location
- Voting hours
- October 5 - October 9: 9:00AM-5:00PM October 12 - October 16: 9:00AM-5:00PM October 19 - October 28: 9:00AM-5:00PM October 29: 8:00AM-5:00PM October 30 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
- Ballot drop-off hours
- October 5 - October 9: 9:00AM-5:00PM October 12 - October 16: 9:00AM-5:00PM October 19 - October 28: 9:00AM-5:00PM October 29: 8:00AM-5:00PM October 30 - 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 ↗San Mateo selected in the public county finder; page 1; result 6 of 107
Redwood CityAssessor-County Clerk-Recorder555 County Center Redwood City,CA 94063 Get Directions Early Voting Same Day Voter Registration Ballot Drop-Off Location October 5 - October 9: 9:00AM-5:00PM October 12 - October 16: 9:00AM-5:00PM October 19 - October 28: 9:00AM-5:00PM October 29: 8:00AM-5:00PM October 30 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM October 5 - October 9: 9:00AM-5:00PM October 12 - October 16: 9:00AM-5:00PM October 19 - October 28: 9:00AM-5:00PM October 29: 8:00AM-5:00PM October 30 - November 2: 9:00AM-5:00PM Election Day: 7:00AM-8:00PM
Atherton Town Hall (inside)
80 Fair Oaks Ln Atherton,CA 94027
- Ballot Drop-Off Location
- Ballot drop-off hours
- October 5 - October 9: 9:00AM-5:00PM October 13 - October 16: 9:00AM-5:00PM October 19 - October 23: 9:00AM-5:00PM October 26 - October 30: 9:00AM-5:00PM November 2: 9:00AM-5:00PM Election Day: 9:00AM-5:00PM
Source & last checked
California Secretary of State · Checked October 15, 2026
Open official source ↗San Mateo selected in the public county finder; page 1; result 7 of 107
AthertonAtherton Town Hall (inside)80 Fair Oaks Ln Atherton,CA 94027 Get Directions Ballot Drop-Off Location October 5 - October 9: 9:00AM-5:00PM October 13 - October 16: 9:00AM-5:00PM October 19 - October 23: 9:00AM-5:00PM October 26 - October 30: 9:00AM-5:00PM November 2: 9:00AM-5:00PM Election Day: 9:00AM-5:00PM
Bayshore Community Center
450 Martin St Daly City,CA 94014
- 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 ↗San Mateo selected in the public county finder; page 1; result 8 of 107
Daly CityBayshore Community Center450 Martin St Daly City,CA 94014 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
Belle Haven Community Campus (outside)
100 Terminal Ave Menlo Park,CA 94025
- Ballot Drop-Off Location
- 24-Hour Ballot Drop Off Location
- Ballot drop-off hours
- October 5 - November 2: Open 24 Hours Election Day: 12:00AM-8:00PM
Source & last checked
California Secretary of State · Checked October 15, 2026
Open official source ↗San Mateo selected in the public county finder; page 1; result 9 of 107
Menlo ParkBelle Haven Community Campus (outside)100 Terminal Ave Menlo Park,CA 94025 Get Directions Ballot Drop-Off Location 24-Hour Ballot Drop Off Location October 5 - November 2: Open 24 Hours Election Day: 12:00AM-8:00PM
Belle Haven Community Campus
100 Terminal Ave Menlo Park,CA 94025
- 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 ↗San Mateo selected in the public county finder; page 1; result 10 of 107
Menlo ParkBelle Haven Community Campus100 Terminal Ave Menlo Park,CA 94025 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
Belmont City Hall (outside)
1 Twin Pines Ln Belmont,CA 94002
- Ballot Drop-Off Location
- 24-Hour Ballot Drop Off Location
- Ballot drop-off hours
- October 5 - November 2: Open 24 Hours Election Day: 12:00AM-8:00PM
Source & last checked
California Secretary of State · Checked October 15, 2026
Open official source ↗San Mateo selected in the public county finder; page 1; result 11 of 107
BelmontBelmont City Hall (outside)1 Twin Pines Ln Belmont,CA 94002 Get Directions Ballot Drop-Off Location 24-Hour Ballot Drop Off Location October 5 - November 2: Open 24 Hours Election Day: 12:00AM-8:00PM
Belmont Public Library (outside)
1110 Alameda De Las Pulgas Belmont,CA 94002
- Ballot Drop-Off Location
- 24-Hour Ballot Drop Off Location
- Ballot drop-off hours
- October 5 - November 2: Open 24 Hours Election Day: 12:00AM-8:00PM
Source & last checked
California Secretary of State · Checked October 15, 2026
Open official source ↗San Mateo selected in the public county finder; page 1; result 12 of 107
BelmontBelmont Public Library (outside)1110 Alameda De Las Pulgas Belmont,CA 94002 Get Directions Ballot Drop-Off Location 24-Hour Ballot Drop Off Location October 5 - November 2: Open 24 Hours Election Day: 12:00AM-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 · San Mateo County — elections; official directory or office heading
Source reviewed October 14, 2026View supporting excerpt
San Mateo Mark Church, Chief Elections Officer & Assessor-County Clerk-Recorder Registration-Elections Division 40 Tower Road San Mateo, CA 94402 (650) 312-5222 (650) 312-5348 Fax Hours: 8:00 a.m. - 5:00 p.m. smcacre.gov/elections E-Mail: registrar@smcacre.gov
- [2] County elections offices directory (opens in a new tab)
California Secretary of State · San Mateo — elections telephone, excluding fax
Source reviewed October 14, 2026View supporting excerpt
San Mateo Mark Church, Chief Elections Officer & Assessor-County Clerk-Recorder Registration-Elections Division 40 Tower Road San Mateo, CA 94402 (650) 312-5222 (650) 312-5348 Fax Hours: 8:00 a.m. - 5:00 p.m. smcacre.gov/elections E-Mail: registrar@smcacre.gov
- [3] County elections offices directory (opens in a new tab)
California Secretary of State · San Mateo — physical block before Mailing Address
Source reviewed October 14, 2026View supporting excerpt
San Mateo Mark Church, Chief Elections Officer & Assessor-County Clerk-Recorder Registration-Elections Division 40 Tower Road San Mateo, CA 94402 (650) 312-5222 (650) 312-5348 Fax Hours: 8:00 a.m. - 5:00 p.m. smcacre.gov/elections E-Mail: registrar@smcacre.gov
- [4] County elections offices directory (opens in a new tab)
California Secretary of State · San Mateo — source-listed hours; no inferred weekdays
Source reviewed October 14, 2026View supporting excerpt
San Mateo Mark Church, Chief Elections Officer & Assessor-County Clerk-Recorder Registration-Elections Division 40 Tower Road San Mateo, CA 94402 (650) 312-5222 (650) 312-5348 Fax Hours: 8:00 a.m. - 5:00 p.m. smcacre.gov/elections E-Mail: registrar@smcacre.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 · San Mateo county election office entry
Source reviewed October 15, 2026View supporting excerpt
San Mateo Mark Church, Chief Elections Officer & Assessor-County Clerk-Recorder Registration-Elections Division 40 Tower Road San Mateo, CA 94402 (650) 312-5222 (650) 312-5348 Fax Hours: 8:00 a.m. - 5:00 p.m. smcacre.gov/elections E-Mail: registrar@smcacre.gov