Union County Child Support Enforcement Agency
Marysville, Ohio
The Union County Child Support Enforcement Agency is at 940 London Ave., Ste. 1800, Marysville, OH 43040. Call the office at (937) 644-1010. It serves Union County.
How do I contact this office?
940 London Ave., Ste. 1800Marysville, OH 43040
Mail: P.O. Box 389, Marysville, OH 43040
- Phone
- (937) 644-1010
- TTY
- (800) 750-0750
- Hours
- Monday to Friday, 8:00 a.m. to 4:30 p.m.
- Before you go
- Hours are set by each county agency. You can return a child support application to your county CSEA by mail or in person.
- Fax
- (937) 644-8700
- Official page
- Official office listing
Is this my office?
This office serves Union County.
You apply for services through the Child Support Enforcement Agency (CSEA) in your county. To find your county's CSEA, call 1-800-686-1556.
Not your area? See every Ohio 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 Child Support Customer Service Portal.
- Pay online, by phone, or by mail: see every way to pay child support in Ohio.
- Ask about your case by phone at (937) 644-1010.
Going in person? Read "Before you go" above, and call first if you can.
Other child support offices near Marysville
- Delaware County Child Support Enforcement Agency Delaware · 17 miles away
- Champaign County Child Support Enforcement Agency Urbana · 21 miles away
- Logan County Child Support Enforcement Agency Bellefontaine · 23 miles away
More help with Ohio child support
Office details come from the official Ohio office listing, checked October 18, 2026. Sunny Child Support is not affiliated with Ohio Department of Job and Family Services, Office of Child Support. Spot a mistake? Tell us.