On June 25, 2011, the Social Security Administration (SSA) changed the way Social Security Numbers (SSN) are assigned. This change is known as "randomization."
What is Randomization?
The SSA traditionally assigned nine-digit SSNs in a particular pattern. Specifically, the first three digits indicated the state in which the consumer resided at the time the SSN was issued, and digits four - five indicated the year the SSN was issued.
Effective June 25th, the SSA changed its SSN assignment methodology to a randomized process. SSN randomization will affect the SSN assignment process in the following ways:
• Elimination of the geographical significance of the first three digits and any association with specific states.
• Elimination of any association with the number's date of issuance.
• Previously unassigned area numbers will be introduced for assignment, excluding area numbers 000, 666 and 900-999.
Now you know.