Pennsylvania Acknowledgment of Paternity for a Child Born to an Unmarried Mother (PA/CS 611)
Pennsylvania Department of Human ServicesParentage and paternityForm PA/CS 611Free downloadLast verified November 10, 2026
A voluntary form that establishes legal paternity for a child born to an unmarried mother. It is filed with the Pennsylvania Department of Human Services, not the vital records office. After that department processes it, the father can be added to the birth record.
Who can use this form
- The birth mother, unmarried at the time of the birth, and the birth father
- A man filing a Claim of Paternity when the mother fails or refuses to sign
What to send with it
- Form completed in blue or black ink
- Social Security numbers, or the No Social Security Number Declaration
- Signature, date and address of each parent
- Signature of a witness to each parent's signature
Where to send it
- Mail to
- Commonwealth of Pennsylvania Department of Human Services Bureau of Child Support Enforcement AOP Program P.O. Box 8018 Harrisburg, PA 17105-8018
- State fee
- Not provided
- Typical processing
- Not provided
- Issued by
- Pennsylvania Department of Human Services
- Form revision
- 8/15
- Source
- Official government page