California · Checked Against SSA's Locator October 1, 2026

Social Security Office in San Mateo, CA

Where Is the Social Security Office in San Mateo, CA?

The San Mateo Social Security Office is in San Mateo, at 800 South Claremont St, Suite 101, open Monday to Friday, 9:00 AM to 4:00 PM. The next closest is the Redwood City Social Security Office, about 7.0 miles away.

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Social Security Offices in San Mateo

Other Offices Near San Mateo

Straight-line distance from the center of San Mateo (U.S. Census Gazetteer) to each office's address (U.S. Census Bureau geocoder). Office hours and phone numbers from SSA's office data, checked against SSA's Office Locator on October 1, 2026; confirm with SSA's Office Locator before you go.

Map of Social Security Offices Near San Mateo

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Social Security office

Which Social Security Office Serves Your ZIP Code in San Mateo?

SSA assigns all 3 ZIP codes in San Mateo to the San Mateo Social Security Office. SSA assigns offices by ZIP code, so the office to use is the one listed for your ZIP.

Social Security office assigned to each ZIP code in San Mateo
ZIP codeOffice SSA assignsDistance
94401San Mateo Social Security Office for ZIP code 944010.8 miles
94402San Mateo Social Security Office for ZIP code 944021.7 miles
94403San Mateo Social Security Office for ZIP code 944031.8 miles

ZIP codes 94401, 94402 and 94403 go to the San Mateo Social Security Office, 800 South Claremont St, Suite 101, San Mateo.

Assigned offices from SSA's Office Locator, looked up by ZIP code on October 1, 2026. ZIP codes are those whose area overlaps San Mateo (U.S. Census Bureau, 2020 ZIP Code Tabulation Areas). Distance is straight-line, from the center of the ZIP code to the office.

Social Security Offices Near Areas Around San Mateo

Where people in nearby communities go, and how far it is. Each area's office is the one SSA assigns to its ZIP codes.

Social Security Office Near Pacifica

Pacifica is about 9.7 miles west of central San Mateo. SSA assigns its ZIP code, 94044, to the Daly City Social Security Office at 355 Gellert Blvd, Suite 201, Daly City, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Pacifica

Social Security Office Near Belmont

Belmont is about 3.3 miles south of central San Mateo. SSA assigns its ZIP code, 94002, to the San Mateo Social Security Office at 800 South Claremont St, Suite 101, San Mateo, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Belmont

Social Security Office Near Menlo Park

Menlo Park is about 11 miles southeast of central San Mateo. SSA assigns its ZIP code, 94025, to the Redwood City Social Security Office at 1718 Broadway St, Redwood City, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Menlo Park

Social Security Office Near Redwood City

Redwood City is about 6.2 miles southeast of central San Mateo. SSA assigns its ZIP codes (94061, 94063 and 94065) to the Redwood City Social Security Office at 1718 Broadway St, Redwood City, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Redwood City

Social Security Office Near Hillsborough

Hillsborough is about 2.6 miles west of central San Mateo. SSA assigns its ZIP code, 94010, to the San Mateo Social Security Office at 800 South Claremont St, Suite 101, San Mateo, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Hillsborough

Social Security Office Near Foster City

Foster City is about 3.3 miles east of central San Mateo. SSA assigns its ZIP code, 94404, to the San Mateo Social Security Office at 800 South Claremont St, Suite 101, San Mateo, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Foster City

Social Security Office Near Burlingame

Burlingame is about 3.5 miles northwest of central San Mateo. SSA assigns its ZIP code, 94010, to the San Mateo Social Security Office at 800 South Claremont St, Suite 101, San Mateo, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Burlingame

Social Security Office Near San Carlos

San Carlos is about 4.8 miles southeast of central San Mateo. SSA assigns its ZIP code, 94070, to the Redwood City Social Security Office at 1718 Broadway St, Redwood City, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near San Carlos

Social Security Office Near Millbrae

Millbrae is about 5.7 miles northwest of central San Mateo. SSA assigns its ZIP code, 94030, to the San Mateo Social Security Office at 800 South Claremont St, Suite 101, San Mateo, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Millbrae

Social Security Office Near South San Francisco

South San Francisco is about 7.5 miles northwest of central San Mateo. SSA assigns its ZIP code, 94080, to the Daly City Social Security Office at 355 Gellert Blvd, Suite 201, Daly City, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near South San Francisco

How to Get an Appointment at the San Mateo Social Security Office

SSA asks you to make an appointment before you visit an office. You can schedule one online on SSA's appointment page by answering a few questions; the appointment may be by phone or in person, and you can change or cancel it from the confirmation email or text.

To book by phone, call the San Mateo Social Security Office at (866) 726-8193, or SSA's national number, 1-800-772-1213 (TTY 1-800-325-0778), Monday through Friday, 8 a.m. to 7 p.m. local time. Help is available in English, Spanish and other languages.

See office hours and appointments for the best times to call and visit.

Can You Skip the Trip?

You can often replace a card, update your address or get a benefit letter online with a my Social Security account. If you need to go in, check what to bring.

Social Security Offices Near Other California Cities

Frequently Asked Questions

Where Is the Social Security Office in San Mateo?

San Mateo Social Security Office: 800 South Claremont St, Suite 101, San Mateo, CA 94402.

Which Social Security Office Serves My ZIP Code in San Mateo?

SSA assigns all 3 ZIP codes in San Mateo to the San Mateo Social Security Office. SSA assigns offices by ZIP code, and the assigned office isn't always the closest one. Look up your ZIP code in the table on this page or in SSA's Office Locator.

What Are Social Security Office Hours Near San Mateo?

The San Mateo Social Security Office is open Monday to Friday, 9:00 AM to 4:00 PM, according to SSA's office data (checked against SSA's Office Locator on October 1, 2026). Offices close on weekends and federal holidays.

What Is the Phone Number for the Social Security Office Near San Mateo?

SSA lists (866) 726-8193 for the San Mateo Social Security Office. SSA's national number is 1-800-772-1213.

How Do I Make an Appointment at the Social Security Office in San Mateo?

Schedule online on SSA's appointment page, where the appointment may be by phone or in person, or call the San Mateo Social Security Office at (866) 726-8193 or SSA at 1-800-772-1213 (TTY 1-800-325-0778), Monday through Friday, 8 a.m. to 7 p.m. local time. SSA asks you to make an appointment before visiting an office.

Every Social Security office in California

Sources

  1. Social Security Administration, field office and resident station data (updated March 9, 2026)
  2. SSA Office Locator (offices and ZIP code assignments, checked October 1, 2026)
  3. U.S. Census Bureau: geocoder, 2023 Gazetteer files and 2020 ZIP Code Tabulation Area relationship files
  4. SSA: Make an appointment
  5. SSA: Contact by phone
  6. SSA: Office locator guidance (appointments and Card Centers)

Independent site, not affiliated with the Social Security Administration. Office addresses, phone numbers and hours come from SSA's public office data. To apply for benefits or manage your record, go to SSA directly at ssa.gov.