All birth certificates issued by a U.S. State include an 11-digit number written in XXX XX XXXXXX format. The birth certificate number is formed by:
- A 3-digit area code number.
- A 2-digit year of registration, which is usually the year of birth.
- A 6-digits serial registration number, assigned sequentially to each birth as it is filed.
Where is the document number located on a birth certificate?
In all birth certificates issued in the United States of America, the birth certificate identificative number is located in the upper right corner of the certificate copy.