What are the hours of the San Mateo Social Security office?

The San Mateo office is generally open 9am to 4pm, Monday through Friday, and closed on weekends and federal holidays. The live status and full weekly hours are at the top of this page, call ahead, as hours can change.

Do I need an appointment at the San Mateo office?

Since 2025, the Social Security Administration asks most visitors to schedule an appointment before visiting a field office. Call (866) 726-8193 or 1-800-772-1213 to book one and reduce your wait.

What is the phone number for the San Mateo Social Security office?

You can reach the office at (866) 726-8193 (TTY 1-800-325-0778), or use the SSA national line at 1-800-772-1213 (TTY 1-800-325-0778), Monday to Friday.

Which towns does the San Mateo Social Security office serve?

Besides San Mateo, this is the closest office for about 8 surrounding communities, including Foster City, Baywood Park, Burlingame, Highlands, Hillsborough. There's a full list of nearby towns and distances on this page.

Is there another Social Security office near San Mateo?

The next-closest field office is in Redwood City, about 6.9 miles away. Other nearby offices are listed on this page with their distances.

Can I replace my Social Security card without visiting the San Mateo office?

In most states you can request a replacement card online with a free my Social Security account at ssa.gov, no office visit needed. You can also check applications, request benefit letters, and update direct deposit there.

San Mateo, CA Social Security office at 800 South Claremont St, 94402

800 South Claremont St, Suite 101, San Mateo, CA 94402

Verified against the SSA directory on July 2, 2026

The San Mateo Social Security office is one of 124 field offices in California, serving San Mateo County and the surrounding area. It is the closest office for residents of San Mateo and 8 nearby communities, roughly 118,000 people. The nearest other Social Security office is in Redwood City, about 6.9 miles away.

nearby towns served: 8
people in service area: 118K
to next-nearest office: 6.9 mi
offices in California: 124
county: San Mateo County

Address

800 South Claremont St
Suite 101
San Mateo, CA 94402

Get directions

Phone

Local:: (866) 726-8193
National:: 1-800-772-1213
TTY:: 1-800-325-0778

San Mateo office hours

Hours below

Open 9am-4pm, Monday to Friday. Closed weekends and federal holidays.

Monday	9am to 4pm
Tuesday	9am to 4pm
Wednesday	9am to 4pm
Thursday	9am to 4pm
Friday	9am to 4pm
Saturday	Closed
Sunday	Closed

Before you visit

Most services now require an appointment. Call ahead at (866) 726-8193 or 1-800-772-1213 to book one.
Bring a photo ID and your Social Security number.
Bring original documents for your request, for a new or replacement card, proof of identity and citizenship or immigration status.
Many tasks don't need a visit: replace a card, get a benefit letter, or update direct deposit online at ssa.gov.

Directions to the San Mateo office

From Highway 101, take the 3rd Avenue exit 416 (west towards Downtown).
Go four blocks and turn left on Claremont; continue four blocks.
The office is on the right Hand side before Ninth Avenue.

San Mateo office location

Open this location on OpenStreetMap →

37.56330, -122.31781 View on OpenStreetMap →

Services at the San Mateo Social Security office

Staff at the San Mateo office handle the full range of Social Security business, including:

Apply for a new or replacement Social Security card
Apply for retirement, disability (SSDI), or SSI benefits
Change your name on your Social Security record
Update direct deposit and mailing address
Request proof of benefits or a benefit verification letter
Get help enrolling in Medicare
Check the status of an application or appeal

Want to prepare first? See our guides on getting an award letter, checking your earnings record, and when to claim retirement.

Closest Social Security office for nearby towns

These nearby towns do not have a separate active Social Security office page here. Based on town and office coordinates, the San Mateo office is the closest active office listed for them. Use this page for the office address, hours, phone number, and directions.

Nearby town	Closest office	Distance
Foster City, CA	San Mateo office	2.6 mi
Baywood Park, CA	San Mateo office	2.8 mi
Burlingame, CA	San Mateo office	3 mi
Highlands, CA	San Mateo office	3.3 mi
Hillsborough, CA	San Mateo office	3.5 mi
Millbrae, CA	San Mateo office	4.5 mi
Half Moon Bay, CA	San Mateo office	9.2 mi
El Granada, CA	San Mateo office	9.3 mi

Browse all California offices →

Other Social Security offices near San Mateo

More Social Security help

All California offices Every field office in the state, by city. Find an office near you Sort offices by distance from your location. Average retirement check by age What people actually receive at each claiming age. Avoid Social Security scams When SSA really calls, and the red flags to watch.

Frequently asked questions about the San Mateo office

What are the hours of the San Mateo Social Security office?: The San Mateo office is generally open 9am to 4pm, Monday through Friday, and closed on weekends and federal holidays. The live status and full weekly hours are at the top of this page, call ahead, as hours can change.
Do I need an appointment at the San Mateo office?: Since 2025, the Social Security Administration asks most visitors to schedule an appointment before visiting a field office. Call (866) 726-8193 or 1-800-772-1213 to book one and reduce your wait.
What is the phone number for the San Mateo Social Security office?: You can reach the office at (866) 726-8193 (TTY 1-800-325-0778), or use the SSA national line at 1-800-772-1213 (TTY 1-800-325-0778), Monday to Friday.
Which towns does the San Mateo Social Security office serve?: Besides San Mateo, this is the closest office for about 8 surrounding communities, including Foster City, Baywood Park, Burlingame, Highlands, Hillsborough. There's a full list of nearby towns and distances on this page.
Is there another Social Security office near San Mateo?: The next-closest field office is in Redwood City, about 6.9 miles away. Other nearby offices are listed on this page with their distances.
Can I replace my Social Security card without visiting the San Mateo office?: In most states you can request a replacement card online with a free my Social Security account at ssa.gov, no office visit needed. You can also check applications, request benefit letters, and update direct deposit there.