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

Social Security Offices Near Montclair, CA

Where Is the Social Security Office Nearest Montclair, CA?

SSA assigns Montclair, CA's ZIP code, 91763, to the Ontario Social Security Office at 1100 E Holt Blvd, Ontario, about 3.9 miles away, phone (866) 331-2216, open Monday to Friday, 9:00 AM to 4:00 PM. The Pomona Valley Social Security Office in Pomona is closer (about 3.2 miles), but it isn't the office SSA assigns.

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Closest Social Security Offices to Montclair, CA

Straight-line distance from the center of Montclair (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 Montclair

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Which Social Security Office Serves Your ZIP Code in Montclair?

SSA assigns Montclair's ZIP code, 91763, to the Ontario Social Security Office in Ontario. 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 Montclair
ZIP codeOffice SSA assignsDistance
91763Ontario Social Security Office for ZIP code 917633.9 miles

ZIP code 91763 goes to the Ontario Social Security Office, 1100 E Holt Blvd, Ontario.

Assigned offices from SSA's Office Locator, looked up by ZIP code on October 1, 2026. ZIP codes are those whose area overlaps Montclair (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 Montclair

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 Rancho Cucamonga

Rancho Cucamonga is about 8.6 miles northeast of central Montclair. Its ZIP codes are split between offices: 91701, 91730 and 91737 go to the Ontario Social Security Office in Ontario; 91739 goes to the Fontana Social Security Office in Fontana.

More on Social Security offices near Rancho Cucamonga

Social Security Office Near Chino Hills

Chino Hills is about 9.0 miles south of central Montclair. SSA assigns its ZIP code, 91709, to the Ontario Social Security Office at 1100 E Holt Blvd, Ontario, open Monday to Friday, 9:00 AM to 4:00 PM. The Brea Social Security Office is closer to central Chino Hills (about 7.7 miles, against 9.9 miles), but it isn't the office SSA assigns.

More on Social Security offices near Chino Hills

Social Security Office Near Chino

Chino is about 6.9 miles south of central Montclair. SSA assigns its ZIP codes (91708 and 91710) to the Ontario Social Security Office at 1100 E Holt Blvd, Ontario, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Chino

Social Security Office Near Diamond Bar

Diamond Bar is about 8.4 miles southwest of central Montclair. SSA assigns its ZIP code, 91765, to the Pomona Valley Social Security Office at 2130 N Garey Ave, Pomona, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Diamond Bar

Social Security Office Near Eastvale

Eastvale is about 10 miles southeast of central Montclair. SSA assigns its ZIP codes (91752 and 92880) to the Riverside Social Security Office at 10000 Magnolia Ave, Riverside, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Eastvale

Social Security Office Near Upland

Upland is about 3.8 miles northeast of central Montclair. SSA assigns its ZIP codes (91784 and 91786) to the Ontario Social Security Office at 1100 E Holt Blvd, Ontario, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Upland

Social Security Office Near Claremont

Claremont is about 3.8 miles north of central Montclair. SSA assigns its ZIP code, 91711, to the Pomona Valley Social Security Office at 2130 N Garey Ave, Pomona, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Claremont

Social Security Office Near Walnut

Walnut is about 9.3 miles west of central Montclair. SSA assigns its ZIP code, 91789, to the Pomona Valley Social Security Office at 2130 N Garey Ave, Pomona, open Monday to Friday, 9:00 AM to 4:00 PM. The West Covina Social Security Office is closer to central Walnut (about 4.6 miles, against 6.9 miles), but it isn't the office SSA assigns.

More on Social Security offices near Walnut

Social Security Office Near San Dimas

San Dimas is about 6.8 miles west of central Montclair. SSA assigns its ZIP code, 91773, to the Glendora Social Security Office at 1165 E Route 66, Glendora, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near San Dimas

Social Security Office Near Ontario

Ontario is about 5.8 miles southeast of central Montclair. SSA assigns its ZIP codes (91761, 91762 and 91764) to the Ontario Social Security Office at 1100 E Holt Blvd, Ontario, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Ontario

How to Get an Appointment at the Pomona Valley 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 Pomona Valley Social Security Office at (888) 808-5486, 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 Montclair?

There isn't an office in Montclair, CA itself. The closest is the Pomona Valley Social Security Office, 2130 N Garey Ave, Pomona, CA 91767, about 3.2 miles away.

Which Social Security Office Serves My ZIP Code in Montclair?

SSA assigns Montclair's ZIP code, 91763, to the Ontario Social Security Office in Ontario. 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 Montclair?

The Pomona Valley 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 Montclair?

SSA lists (888) 808-5486 for the Pomona Valley Social Security Office. SSA's national number is 1-800-772-1213.

How Do I Make an Appointment at the Social Security Office Near Montclair?

Schedule online on SSA's appointment page, where the appointment may be by phone or in person, or call the Pomona Valley Social Security Office at (888) 808-5486 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.