TN 8 (08-10)
RM 10210.305 Reviewing a Birth Certificate Birth Area Code
A. Information about the birth area code
Since 1948, most State registrars use a uniform numbering system.
Birth certificates (BCs) issued by the States generally include an 11-digit number in a xxx xx xxxxxx format. The number begins with a 3-digit birth area code number followed by a 2-digit year of registration (almost always the year of birth) and lastly a 6-digit serial registration number (assigned sequentially to each birth as it is filed).
B. Procedure for reviewing the birth area code
Follow this procedure in conjunction with RM 10210.210, Reviewing Age, Identity, Citizenship and Lawful Alien Status Evidence for an SSN Card.
Compare the 3-digit birth area code with the birth area code(s) listed below.
Compare the serial registration number with the date of birth. Registration numbers issued early in the year should have a low registration number although it would be unlikely for a birth at the end of the year to have a low registration number.
Verify any BC with the issuing agency when the birth area code number does not agree with the assigned birth area code number. Follow GN 00308.000 and/or local procedures to verify primary evidence of age with the appropriate BVS. For additional information regarding suspect or fraudulent birth records, see RM 10210.700 and regional fraud reports.
C. List of birth area code numbers
The following list shows birth area code numbers by State. Exceptions are noted under the applicable State.
District of Columbia
Prior to 1988, some LA BCs may begin with 119.
New Orleans used the birth area code number 117 until 7/01/74 when it merged with the LA State system.
Baltimore used the birth area code number 154 until the early 1970s when it merged with the MD State system.
Boston does not use the birth area code.
Only New York City uses the birth area code number 156.
Pennsylvania - Uses a 7-digit number. The last digit is always 0, followed by a hyphen and the year of birth.