Child Support

The Child Support Unit, under a cooperative agreement with the Department of Social Services, Family Support Division:
Child support services are provided by the Family Support Division without cost to all Missouri residents, and are provided automatically to custodial parents who receive particular kinds of public assistance benefits.
The Family Support Division is the initial agency for handling all cases. Only when the Family Support Division is unable to adequately resolve a child support matter is the case referred to the appropriate prosecuting attorney's office.

St. Charles County Prosecuting Attorney's Office
The Child Support Unit of the Prosecuting Attorney's Office only works cases referred by the Family Support Division.

This office has no authority to act without a proper case referral.

Contact Information
A custodial parent who lives in Missouri and desires child support services should contact the Family Support Division Office in the county where he/she resides. The Family Support Division Office for St. Charles County may be reached by calling 636-940-3100 or visiting:
3737 Harry S Truman Blvd.
St. Charles, MO 63301

View a map.

Nonresident custodial parents may also request services by contacting the Family Support Division main headquarters in Jefferson City, Missouri.

Contact Numbers
  • Child Support Customer Service Call Center: 866-313-9960
  • Child Support General Information: 800-859-7999
  • Child Support Payment Information (Missouri Automated Child Support System (MACSS) - case number required): 800-225-0530
  • Employer Information: 800-585-9234