San Mateo, CA Social Security office at 800 South Claremont St, 94402
The San Mateo Social Security office at 800 South Claremont St is one of 124 field offices in California and 1,182 nationwide.
Closest listed SSA office for San Mateo and 10 nearby towns. Next-nearest office: Redwood City (7.4 mi).
San Mateo office hours
- Monday 9:00 AM – 4:00 PM
- Tuesday 9:00 AM – 4:00 PM
- Wednesday 9:00 AM – 4:00 PM
- Thursday 9:00 AM – 4:00 PM
- Friday 9:00 AM – 4:00 PM
- Saturday Closed
- Sunday Closed
Best time to visit & closures
Upcoming Federal Holiday Closures
Can you skip a trip to the San Mateo office?
| Task | Best Method | Fastest Option | San Mateo Visit Notes & Originals |
|---|---|---|---|
| Replace a Social Security card | 🟢 Online / Phone | Online at SSA.gov or by phone | Bring unexpired photo ID only if online replacement is unavailable. |
| Benefit verification (award) letter | 🟢 Instant Online | Download PDF online or call 1-800-772-1213 | No office visit needed unless you require an immediate stamped printout. |
| Update direct deposit or address | 🟢 Online / Phone | Online account or automated phone line | No trip needed to San Mateo. |
| Apply for Retirement, SSDI, or Medicare | 🟡 Call First | Online application or phone interview | Call (866) 726-8193 to book an appointment before visiting. |
| Apply for SSI benefits | 🟡 Call First | Scheduled phone or in-person interview | Call ahead; bring income, bank, and residency records. |
| First-time SSN card or legal name change | 🔴 In-Person Originals | Start online, then bring originals | Must present original/certified marriage or court order + photo ID. |
San Mateo office location
800 South Claremont St, Suite 101, San Mateo, CA 94402 · Open in Google Maps ↗
Before you visit the San Mateo office
Book Appointment First
Call (866) 726-8193 or 1-800-772-1213 before driving.
Unexpired Photo ID + Originals
Bring original or certified records only (no photocopies). See checklist →
Direct Numbers & Codes
Local: (866) 726-8193 · TTY: 1-800-325-0778 · Fax: (833) 950-2108 · Code #967
Services at the San Mateo Social Security office
Other Social Security offices near San Mateo
Redwood City, CA 94063
1718 Broadway St
Daly City, CA 94015
355 Gellert Blvd, Suite 201
Hayward, CA 94545
24301 Southland Dr, Suite 500
San Leandro, CA 94577
320 Davis St
San Francisco, CA 94103
3140 16th St
Closest Social Security office for nearby towns
| Nearby Town | Closest Listed Office | Address & Phone | Distance |
|---|---|---|---|
| Hillsborough, CA | San Mateo office | 800 South Claremont St · (866) 726-8193 | 2.3 mi |
| Baywood Park, CA | San Mateo office | 800 South Claremont St · (866) 726-8193 | 2.7 mi |
| Burlingame, CA | San Mateo office | 800 South Claremont St · (866) 726-8193 | 3.1 mi |
| Highlands, CA | San Mateo office | 800 South Claremont St · (866) 726-8193 | 3.4 mi |
| Belmont, CA | San Mateo office | 800 South Claremont St · (866) 726-8193 | 3.6 mi |
| Foster City, CA | San Mateo office | 800 South Claremont St · (866) 726-8193 | 3.6 mi |
| Millbrae, CA | San Mateo office | 800 South Claremont St · (866) 726-8193 | 5.3 mi |
| El Granada, CA | San Mateo office | 800 South Claremont St · (866) 726-8193 | 8.8 mi |
| Half Moon Bay, CA | San Mateo office | 800 South Claremont St · (866) 726-8193 | 9.4 mi |
| Moss Beach, CA | San Mateo office | 800 South Claremont St · (866) 726-8193 | 10.5 mi |
Frequently asked questions about the San Mateo office
What are the published hours for the San Mateo office?
The published schedule is Mon–Fri: 9:00 AM – 4:00 PM. The office is closed on weekends and federal holidays.
Do I need an appointment at the San Mateo office?
Many Social Security services require an appointment. Call the local office at (866) 726-8193 or the national line at 1-800-772-1213 before visiting.
What phone number should I call for the San Mateo office?
Call the local branch at (866) 726-8193, the national toll-free line at 1-800-772-1213, or TTY 1-800-325-0778.
What documents should I bring to the office?
Bring an unexpired government photo ID and original or certified documents for your task. Photocopies and notarized copies are not accepted.
Can I complete my Social Security task online?
Yes. Replacement cards, benefit verification letters, and address updates can be completed online through your official my Social Security account. Visit my Social Security at SSA.gov ↗ to start online.
Are these hours live, and is this an official SSA page?
No on both. These are published weekly hours, and SSA Office Finder is an independent directory. Verify official notices at SSA.gov ↗.
Official government portal: Social Security Administration (SSA.gov) ↗