San Mateo Social Security office
Information verified on July 21, 2026.
- Address
- 800 South Claremont St, Suite 101, San Mateo, CA 94402
- County
- San Mateo
- Phone
- 866-726-8193
- Hours
- Monday
- 9:00 AM to 4:00 PM
- Tuesday
- 9:00 AM to 4:00 PM
- Wednesday
- 9:00 AM to 4:00 PM
- Thursday
- 9:00 AM to 4:00 PM
- Friday
- 9:00 AM to 4:00 PM
- Last verified
- July 21, 2026
The San Mateo office is one of 124 Social Security field offices in California, serving San Mateo, home to about 130,000 people 65 and older. The nearest other office is in Redwood City, about 7 miles away. The average monthly Social Security benefit in San Mateo is about $2,157.
This office is open weekdays, 9:00 AM to 4:00 PM. The Social Security Administration recommends scheduling an appointment before you visit, which you can do at ssa.gov.
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- Average monthly Social Security benefit in this county
- $2,157
- Social Security beneficiaries in this county
- 124,430
- Residents 65 and older in this county
- 132,242
Nearest other office: Redwood City, CA (7.4 miles)
This office is the closest Social Security office for zip codes 94497, 94401, 94402, 94403, 94011, 94404, 94010, 94002, 94030, 94128, 94019, 94018, and 1 more.
Services and appointments
We do not have the services or appointment policy for this office yet. You can confirm both with the Social Security Administration at ssa.gov or by calling the office.
Nearest offices
- Redwood City CA · Redwood City, CA7.4 miles
- Daly City CA · Daly City, CA10.9 miles
- Hayward CA · Hayward, CA13.2 miles
- San Leandro CA · San Leandro, CA14.2 miles
- Sf Mission CA · San Francisco, CA15.1 miles
Have Social Security questions?
A licensed advisor near you can help with claiming decisions and what to bring.