How many Social Security offices are in Ontario?

Ontario, California has 1 Social Security field office, listed below with its address, hours, and phone number.

Do I need an appointment at the Ontario office?

Since 2025 the SSA asks most visitors to book an appointment before coming in. Call the office directly or the national line at 1-800-772-1213 (TTY 1-800-325-0778) to schedule one and cut your wait.

What should I bring to a Ontario Social Security office?

Bring a photo ID and your Social Security number, plus original documents for your request, for example, proof of identity and citizenship or immigration status for a new or replacement card.

What's the nearest Social Security office to Ontario?

The closest field office outside Ontario is in Pomona, about 7.4 miles away. More nearby offices are listed on this page.

Can I avoid visiting a Ontario office?

Many tasks, replacing a card, checking an application, getting a benefit verification letter, or updating direct deposit, can be done online with a free my Social Security account at ssa.gov, with no visit needed.

Social Security Offices in Ontario, California

1 office · San Bernardino County

Ontario has one Social Security field office, in San Bernardino County. It serves the city and the surrounding area, the closest office for 9 nearby communities, and is one of California's 124 field offices. Its address, hours, phone number, and directions are below.

office in city: 1
communities served: 9
people in service area: 650K
county: San Bernardino County
to next-nearest city: 7.4 mi

The Ontario office on the map

1 location, Social Security offices in Ontario. Click a pin for the address and a link.

The Ontario Social Security office

1100 E Holt Blvd Ontario, CA 91761 Mon-Fri 9am-4pm (866) 331-2216 View office →

Visiting a Ontario office

Most services now require an appointment. Book by calling the office or 1-800-772-1213 (TTY 1-800-325-0778).
Bring a photo ID and your Social Security number, plus original documents for your request.
Field offices are open weekdays only and closed on federal holidays. Check the exact hours on each office page above.
Skip the trip when you can: replace a card, get a benefit letter, or update direct deposit online at ssa.gov.

Towns served by the Ontario office

Many nearby towns have no Social Security office of their own, so the Ontario office is their closest option. It's the nearest field office for 9 surrounding communities, the largest is Rancho Cucamonga (175,142 residents):

Town	Distance	Population
Rancho Cucamonga, CA	3.7 mi	175,142
Corona, CA	13.5 mi	159,743
Chino, CA	4.8 mi	92,975
Upland, CA	2.6 mi	79,274
Eastvale, CA	7.9 mi	71,375
Montclair, CA	3.5 mi	38,061
Norco, CA	10.3 mi	26,077
Coronita, CA	13 mi	3,968
San Antonio Heights, CA	6.6 mi	3,113

Browse all California offices →

Other Social Security offices near Ontario

More Social Security help

All California officesEvery field office in the state, by city. Find an office near youSort offices by distance from your location. Get an award letterProof of your benefits, online or in person. Avoid Social Security scamsWhen SSA really calls, and the red flags.

Ontario Social Security offices: FAQs

How many Social Security offices are in Ontario?: Ontario, California has 1 Social Security field office, listed below with its address, hours, and phone number.
Do I need an appointment at the Ontario office?: Since 2025 the SSA asks most visitors to book an appointment before coming in. Call the office directly or the national line at 1-800-772-1213 (TTY 1-800-325-0778) to schedule one and cut your wait.
What should I bring to a Ontario Social Security office?: Bring a photo ID and your Social Security number, plus original documents for your request, for example, proof of identity and citizenship or immigration status for a new or replacement card.
What's the nearest Social Security office to Ontario?: The closest field office outside Ontario is in Pomona, about 7.4 miles away. More nearby offices are listed on this page.
Can I avoid visiting a Ontario office?: Many tasks, replacing a card, checking an application, getting a benefit verification letter, or updating direct deposit, can be done online with a free my Social Security account at ssa.gov, with no visit needed.