Knox County Child Support Enforcement Agency
Mount Vernon, Ohio
The Knox County Child Support Enforcement Agency is at 117 E. High St., 4th Fl., Mount Vernon, OH 43050. Call the office at (740) 397-7177. It serves Knox County.
How do I contact this office?
117 E. High St., 4th Fl.Mount Vernon, OH 43050
- Phone
- (740) 397-7177
- TTY
- (800) 750-0750
- Hours
- Monday to Friday, 7:30 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
- (740) 392-8882
- Official page
- Office page
Is this my office?
This office serves Knox 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 (740) 397-7177.
Going in person? Read "Before you go" above, and call first if you can.
Other child support offices near Mount Vernon
- Morrow County Child Support Enforcement Agency Mt. Gilead · 22 miles away
- Licking County Child Support Enforcement Agency Newark · 24 miles away
- Richland County Child Support Enforcement Agency Mansfield · 25 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.