Colorado Social Security Numbers
Social Security Numbers issued to Colorado fall between 521-01-0001 and 653-99-9999.
Use the SSN Search Tool to check individual Social Security Numbers.
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About this Data
SSNs issued before June 25, 2011 are linked to where the number was issued which is often the same as where the cardholder was born. After 2011, SSN issuance was randomized. Not every SSN in the range above is necessarily valid.
Read MoreSocial Security Number | First Year Issued | Last Year Issued | Estimated Age of Cardholder | Valid SSN? |
---|---|---|---|---|
521-01-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-02-xxxx | unknown | unknown | 50 to 62 yrs | Valid |
521-03-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-04-xxxx | unknown | unknown | 49 to 61 yrs | Valid |
521-05-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-06-xxxx | unknown | unknown | 49 to 61 yrs | Valid |
521-07-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-08-xxxx | unknown | unknown | 49 to 61 yrs | Valid |
521-09-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-10-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-11-xxxx | unknown | unknown | 48 to 60 yrs | Valid |
521-12-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-13-xxxx | unknown | unknown | 48 to 60 yrs | Valid |
521-14-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-15-xxxx | unknown | unknown | 47 to 59 yrs | Valid |
521-16-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-17-xxxx | unknown | unknown | 47 to 59 yrs | Valid |
521-18-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-19-xxxx | unknown | unknown | 46 to 58 yrs | Valid |
521-20-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-21-xxxx | unknown | unknown | 46 to 58 yrs | Valid |
521-22-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-23-xxxx | unknown | unknown | 45 to 57 yrs | Valid |
521-24-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-25-xxxx | unknown | unknown | 44 to 56 yrs | Valid |
521-26-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-27-xxxx | unknown | unknown | 44 to 56 yrs | Valid |
521-28-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-29-xxxx | unknown | unknown | 43 to 55 yrs | Valid |
521-30-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-31-xxxx | unknown | unknown | 42 to 54 yrs | Valid |
521-32-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-33-xxxx | unknown | unknown | 42 to 54 yrs | Valid |
521-34-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-35-xxxx | unknown | unknown | 41 to 53 yrs | Valid |
521-36-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-37-xxxx | unknown | unknown | 40 to 52 yrs | Valid |
521-38-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-39-xxxx | unknown | unknown | 40 to 52 yrs | Valid |
521-40-xxxx | 1950 | 1950 | 81 to 99 yrs | Valid |
521-41-xxxx | unknown | unknown | 39 to 51 yrs | Valid |
521-42-xxxx | unknown | unknown | 72 to 84 yrs | Valid |
521-43-xxxx | unknown | unknown | 39 to 51 yrs | Valid |
521-44-xxxx | unknown | unknown | 71 to 83 yrs | Valid |
521-45-xxxx | unknown | unknown | 38 to 50 yrs | Valid |
521-46-xxxx | unknown | unknown | 70 to 82 yrs | Valid |
521-47-xxxx | unknown | unknown | 38 to 50 yrs | Valid |
521-48-xxxx | unknown | unknown | 69 to 81 yrs | Valid |
521-49-xxxx | unknown | unknown | 37 to 49 yrs | Valid |
521-50-xxxx | unknown | unknown | 68 to 80 yrs | Valid |