Ontario, CA · Social Security Field Office

Ontario Social Security Office

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Social Security office

Before You Go to the Ontario Office

Many Social Security tasks don't need a visit. You can often replace a card, change your address or get a benefit verification letter online through a my Social Security account. If you do need to go in, see what to bring and how appointments work.

Office details come from SSA's office data (updated March 9, 2026). Offices move and hours change, so confirm with SSA's Office Locator and office closings page before you go.

How to Get an Appointment at the Ontario Social Security Office

SSA asks you to make an appointment before you visit an office. Schedule online on SSA's appointment page, where the appointment may be by phone or in person, or call this office at (866) 331-2216 or SSA at 1-800-772-1213 (TTY 1-800-325-0778), Monday through Friday, 8 a.m. to 7 p.m. local time.

If you only need a new or replacement Social Security card or to update your personal information, SSA directs you to a Card Center where your ZIP code has one.

ZIP Codes the Ontario Office Serves

SSA assigns 13 ZIP codes to this office. If yours is listed, this is the office to use:

91701917089170991710917309173791759917619176291763917649178491786

From SSA's Office Locator, looked up by ZIP code on October 1, 2026.

Other Social Security Offices Near Ontario

Straight-line distance between office addresses (U.S. Census Bureau geocoder).

More Social Security Offices in California

All Social Security offices in California · Social Security offices near Ontario

Ontario Social Security Office: Common Questions

What Are the Hours of the Ontario Social Security Office?

Monday to Friday, 9:00 AM to 4:00 PM, according to SSA's office data (updated March 9, 2026). Offices are closed on weekends and federal holidays. Check SSA's office closings page before you go.

Which ZIP Codes Does the Ontario Social Security Office Serve?

SSA's Office Locator assigns 13 ZIP codes to this office: 91701, 91708, 91709, 91710, 91730, 91737, 91759, 91761, 91762, 91763, 91764, 91784 and 91786. SSA assigns offices by ZIP code, so if yours is listed, this is your office.

What Is the Phone Number for the Ontario Social Security Office?

SSA lists (866) 331-2216 for this office and (833) 950-3373 as its fax number. SSA's national number is 1-800-772-1213.

Where Is the Ontario Social Security Office?

1100 E Holt Blvd, Ontario, CA 91761.

What Is the Closest Other Social Security Office to Ontario?

The Pomona Valley Social Security Office in Pomona, CA is about 7.0 miles away, phone (888) 808-5486. The next closest is Fontana Social Security Office, about 11 miles away.

Sources

  1. Social Security Administration, field office and resident station data (updated March 9, 2026)
  2. SSA Office Locator (SSA's primary tool for office details, checked October 1, 2026)
  3. U.S. Census Bureau geocoder (office coordinates)
  4. SSA: Make an appointment
  5. SSA: Contact by phone

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.