What do all social security numbers start with

The first three (3) digits of a person's social security number are determined by the ZIP Code of the mailing address shown on the application for a social security number. Prior to 1973, social security numbers were assigned by our field offices.

SSN is given a serial number from the series 2001-2999 and 7001-7999. The last three serial numbers issued are 9998, 9999, and 7999. Serial number 0000 is never used. Each State goes through all of its area numbers with group number 01 and serial numbers 0001-9999 and 7999 before using group number 03.

Number Has Three Parts The first set of three digits is called the Area Number. The second set of two digits is called the Group Number. The final set of four digits is the Serial Number.

The Serial Number, itself, doesn't say anything about your location or age that the Group Number and Area Number don't already say, although since they are assigned consecutively, they could potentially reveal your relative age within a Group and an Area.