File an Acknowledgement of Paternity

An Acknowledgement of Paternity (AOP) is a legal document that allows parents who aren't married to establish legal paternity.

Biological parents who want to establish their child’s legal rights to his or her father can voluntarily establish paternity with an AOP.

If a parent is in the military, incarcerated, or living in a different city or state, contact the AOP Hotline at 866-255-2006.


Step 1.Schedule an Appointment

Call to 210-207-7253 to make an appointment in person.

  1. Select English or Spanish
  2. Press Option 1 for Vital Records
  3. Press Option 8 to leave a message

Step 2.Visit Our Office

Free parking is available in the front and rear of building and the facility is ADA accessible.


George Whitfield, Jr.
Municipal Archives & Records Center
719 S. Santa Rosa
San Antonio, TX 78204


Monday - Friday: 8 a.m. - 4:30 p.m.
4th Tuesday of the month: 10 a.m. - 4:30 p.m.

Closed on City holidays.

NOTE: Both parents need to be present for the appointment.