San Bernardino County Child Support Office (Ontario)
Ontario, California
The San Bernardino County Child Support Office (Ontario) is at 191 N. Vineyard Ave., Ontario, CA 91764. Call the Department of Child Support Services at (866) 901-3212, the statewide line. It serves San Bernardino County.
How do I contact this office?
191 N. Vineyard Ave.Ontario, CA 91764
- Phone
- (866) 901-3212 (statewide line)
- TTY
- (866) 399-4096
- Hours
- Monday to Friday, 8:00 a.m. to 5:00 p.m.
- Before you go
- Appointments to speak with a specialist can be scheduled through QLess.
- child.support-mbx@hss.sbcounty.gov
- Fax
- (909) 799-4939
- Official page
- Office page
Is this my office?
This office serves San Bernardino County.
Not your area? See every California child support office.
Can I handle this without going in?
Often, yes. Many requests don't need a visit:
- Check your case and payments online in Customer Connect.
- Pay online, by phone, or by mail: see every way to pay child support in California.
- Ask about your case by phone at (866) 901-3212.
Going in person? Read "Before you go" above, and call first if you can.
What can I do at this office?
- Genetic testing (Wednesday, 8:00 a.m. to 4:30 p.m.)
- TouchPay payment kiosk
Other child support offices near Ontario
- Los Angeles County Child Support Services, Pomona Office Pomona · 11 miles away
- Riverside County Department of Child Support Services, Riverside Office Riverside · 16 miles away
- San Bernardino County Child Support Office (Loma Linda) Loma Linda · 21 miles away
More help with California child support
Office details come from the official California office listing, checked October 24, 2026. Sunny Child Support is not affiliated with the Department of Child Support Services. Spot a mistake? Tell us.