San Diego County, California elections office: address and phone for 2026
The California Secretary of State lists the San Diego County Elections Office at 5600 Overland Avenue, San Diego, CA 92123, phone 858-565-5800 or 800-696-0136. For early voting, see every San Diego County early voting location with days and hours.
San Diego County elections office
San Diego County Elections Office
Office: 5600 Overland Avenue, San Diego, CA 92123
Mailing address: P.O. Box 85656, San Diego, CA 92186
Phone: 858-565-5800 or 800-696-0136
Regular office hours: 8 a.m. to 5 p.m.
California voting dates for San Diego County voters
| Date | What |
|---|---|
| Mon, Oct 5 | Ballots go out to all voters Every active registered voter is mailed a ballot. Drop boxes open in early October. source |
| Mon, Oct 5, 8:00 AM | Early voting opens Early voting sites open Oct 5; vote centers in Voter's Choice Act counties open Oct 24. Hours and locations vary by county. source |
| Mon, Oct 19 | Last day to register Last day to register for the Nov 3 general election. After that, use same-day (conditional) registration at your county elections office or a voting location. source |
| Tue, Oct 27 | Last day to request a replacement ballot by mail After this, ask in person at your county elections office. source |
| Tue, Nov 3, 8:00 PM | Election Day: polls open 7:00 a.m. to 8:00 p.m. Find your polling place or vote center through your county elections office. source |
| Tue, Nov 3, 8:00 PM | Register and vote the same day Conditional voter registration runs Oct 20–Nov 3; you'll vote a provisional ballot that counts once your registration is verified. Polls close at 8 p.m. source |
| Tue, Nov 3, 8:00 PM | Return your ballot Every active voter is mailed a ballot. Drop it off by 8 p.m., or mail it postmarked by Election Day so it arrives by Nov 10. source |
San Diego County voting questions
What is the phone number for the San Diego County elections office?
858-565-5800 or 800-696-0136, the Elections Office (San Diego County's elections office on the California Secretary of State, County Elections Offices list).
What is the address of the San Diego County elections office?
5600 Overland Avenue, San Diego, CA 92123. Mailing address: P.O. Box 85656, San Diego, CA 92186.
When does early voting start in San Diego County?
Early voting opens Monday, October 5, 2026. Early voting sites open Oct 5; vote centers in Voter's Choice Act counties open Oct 24. Hours and locations vary by county. San Diego County's locations are on our San Diego County early voting page.
More for California voters
- Who is on the California ballot: every candidate on the state's official list, race by race.
- California voting deadlines 2026: registration, mail ballots, early voting and Election Day.
- California early voting locations we have read so far, with days and hours.
- Every California county's office.
- Early voting dates in every state.
Other California counties: Alameda, Alpine, Amador, Butte, Calaveras, Colusa, Contra Costa, Del Norte, El Dorado, Fresno, Glenn, Humboldt, Imperial, Inyo, Kern, Kings, Lake, Lassen, Los Angeles, Madera, Marin, Mariposa, Mendocino, Merced, Modoc, Mono, Monterey, Napa, Nevada, Orange, Placer, Plumas, Riverside, Sacramento, San Benito, San Bernardino, San Francisco, San Joaquin, San Luis Obispo, San Mateo, Santa Barbara, Santa Clara, Santa Cruz, Shasta, Sierra, Siskiyou, Solano, Sonoma, Stanislaus, Sutter, Tehama, Trinity, Tulare, Tuolumne, Ventura, Yolo, Yuba.
Office details are from the California Secretary of State, County Elections Offices (checked October 14, 2026). Dates are California's, each linked to its source. Call the office before you go.