SSN Prefix Chart
(See the SSN Allocation Table below to decode known social security numbers.)
Social Security Number Allocations
The chart below shows the first 3 digits of the social security numbers assigned throughout the United States and its possessions. The same area, when shown more than once, means that certain numbers have been transferred from one State to another, or that an area has been divided for use among certain geographic locations.
WARNING:
On June 25, 2011, Social Security changed the SSN assignment process. The information below explains how they established and issued SSN’s prior to the new SSN assignment process. The Social Security Administration provides this information below strictly for historical and informational purposes.
THIS INFORMATION COURTESY OF THE SOCIAL SECURITY ADMINISTRATION.
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