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.

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Social Security Number First Year Issued Last Year Issued Estimated Age of Cardholder Valid SSN?
521-01-xxxx1950195081 to 99 yrsValid
521-02-xxxxunknownunknown50 to 62 yrsValid
521-03-xxxx1950195081 to 99 yrsValid
521-04-xxxxunknownunknown49 to 61 yrsValid
521-05-xxxx1950195081 to 99 yrsValid
521-06-xxxxunknownunknown49 to 61 yrsValid
521-07-xxxx1950195081 to 99 yrsValid
521-08-xxxxunknownunknown49 to 61 yrsValid
521-09-xxxx1950195081 to 99 yrsValid
521-10-xxxx1950195081 to 99 yrsValid
521-11-xxxxunknownunknown48 to 60 yrsValid
521-12-xxxx1950195081 to 99 yrsValid
521-13-xxxxunknownunknown48 to 60 yrsValid
521-14-xxxx1950195081 to 99 yrsValid
521-15-xxxxunknownunknown47 to 59 yrsValid
521-16-xxxx1950195081 to 99 yrsValid
521-17-xxxxunknownunknown47 to 59 yrsValid
521-18-xxxx1950195081 to 99 yrsValid
521-19-xxxxunknownunknown46 to 58 yrsValid
521-20-xxxx1950195081 to 99 yrsValid
521-21-xxxxunknownunknown46 to 58 yrsValid
521-22-xxxx1950195081 to 99 yrsValid
521-23-xxxxunknownunknown45 to 57 yrsValid
521-24-xxxx1950195081 to 99 yrsValid
521-25-xxxxunknownunknown44 to 56 yrsValid
521-26-xxxx1950195081 to 99 yrsValid
521-27-xxxxunknownunknown44 to 56 yrsValid
521-28-xxxx1950195081 to 99 yrsValid
521-29-xxxxunknownunknown43 to 55 yrsValid
521-30-xxxx1950195081 to 99 yrsValid
521-31-xxxxunknownunknown42 to 54 yrsValid
521-32-xxxx1950195081 to 99 yrsValid
521-33-xxxxunknownunknown42 to 54 yrsValid
521-34-xxxx1950195081 to 99 yrsValid
521-35-xxxxunknownunknown41 to 53 yrsValid
521-36-xxxx1950195081 to 99 yrsValid
521-37-xxxxunknownunknown40 to 52 yrsValid
521-38-xxxx1950195081 to 99 yrsValid
521-39-xxxxunknownunknown40 to 52 yrsValid
521-40-xxxx1950195081 to 99 yrsValid
521-41-xxxxunknownunknown39 to 51 yrsValid
521-42-xxxxunknownunknown72 to 84 yrsValid
521-43-xxxxunknownunknown39 to 51 yrsValid
521-44-xxxxunknownunknown71 to 83 yrsValid
521-45-xxxxunknownunknown38 to 50 yrsValid
521-46-xxxxunknownunknown70 to 82 yrsValid
521-47-xxxxunknownunknown38 to 50 yrsValid
521-48-xxxxunknownunknown69 to 81 yrsValid
521-49-xxxxunknownunknown37 to 49 yrsValid
521-50-xxxxunknownunknown68 to 80 yrsValid