Social Security cards started arriving in American mailboxes in November 1936, about a year after President Franklin D. Roosevelt signed the Social Security Act on August 14, 1935.1Social Security Administration. Social Security Act of 1935 The federal government distributed the cards through local post offices so it could track each worker’s lifetime earnings and pay retirement benefits based on them. The paper document that showed up in those first mailings is the direct ancestor of the card people carry today.
Why a Card Was Needed in the First Place
The Social Security Act created a program of federal old-age benefits funded by payroll taxes on employers and workers, and it set up a three-member Social Security Board to run it.2Social Security Administration. Social Security History – Organizational History To pay the right benefit later, the Board had to keep an accurate record of what every worker earned across an entire career. Two workers named John Smith in the same state could easily have their wages mixed up. A unique nine-digit number solved that problem, and the physical card gave each worker proof of enrollment and something to show an employer.
The 1936 Post Office Rollout
The Social Security Board had no national field-office network in late 1936, so it relied on the roughly 45,000 branches of the U.S. Post Office Department to get numbers into workers’ hands.3Social Security Administration. The First Social Security Number and the Lowest Number Starting in November 1936, post offices handed Form SS-4 to employers, which assigned each business an employer identification number. Employers then gave their workers Form SS-5, the individual application.4Social Security Administration. Social Security Numbers
Workers filled out the SS-5 and returned it to a local post office. Out of the 45,000 participating branches, 1,074 operated as “typing centers,” where staff typed the application information onto a card and mailed it back to the worker.3Social Security Administration. The First Social Security Number and the Lowest Number The card itself was a perforated tear-off from a larger office record form called the OA-702.4Social Security Administration. Social Security Numbers
The scale was enormous. About 37 million Social Security numbers were issued during 1936 and 1937 alone, making the rollout one of the largest peacetime administrative efforts in American history.5Social Security Administration. Social Security History
What the First Cards Looked Like
The very first card was a plain paper document. The printed text appeared in blue ink with a Social Security Board seal in a lighter blue at the center, while the number itself was printed in red. A perforated stub attached to the card carried the holder’s mailing address and was meant to be stored separately for safekeeping.6Social Security Administration. Social Security Cards – Version History
Starting in 1946, cards carried a printed message along the bottom reading “FOR SOCIAL SECURITY PURPOSES — NOT FOR IDENTIFICATION,” reflecting the agency’s position that the card should only be used for tracking earnings. In 1961, that line was updated to “FOR SOCIAL SECURITY AND TAX PURPOSES — NOT FOR IDENTIFICATION.” The legend was removed entirely in 1972, as the number was already being used as a standard identifier across government and private institutions.7Social Security Administration. Frequently Asked Questions
The biggest physical overhaul came in October 1983, when Congress amended the Social Security Act to require that new and replacement cards be made of banknote paper and be as counterfeit-resistant as practicable. The SSA worked with the Bureau of Engraving and Printing and the Secret Service on the redesign.8Social Security Administration. Chapter III – The Current Social Security Card Modern cards use the same specialty paper as U.S. currency, with randomly placed colored planchettes embedded on the back. They are printed using intaglio, the raised-ink method used on paper money, and carry tamper-evident features that reveal signs of alteration.6Social Security Administration. Social Security Cards – Version History
How the Number Itself Has Been Assigned
The nine digits on a Social Security card were never random at the start. The first three digits, the area number, corresponded to a state. The middle two digits, the group number, followed a specific alternating pattern of odd and even numbers used for administrative tracking. The last four ran in serial order from 0001 through 9999 within each group.9Social Security Administration. The SSN Numbering Scheme
Before 1972, cards were issued out of local Social Security offices, and the area number reflected the state where a person applied. After 1972, numbers were assigned centrally from SSA headquarters in Baltimore, and the area number reflected the mailing address on the application.9Social Security Administration. The SSN Numbering Scheme
That geographic system ended on June 25, 2011, when the SSA switched to randomized assignment. The agency made the change to protect the integrity of the number by making it harder to guess, and to open up previously reserved geographic blocks so the nine-digit system would not run out.10Social Security Administration. Social Security Number Randomization Under the old scheme, someone who knew where and roughly when you were born could narrow your number down. Randomization removed that shortcut.
From Adults to Newborns
For the program’s first 50 years, most people did not apply for a number until they were teenagers or young adults entering the workforce. The Tax Reform Act of 1986 changed that by requiring taxpayers to list a Social Security number for every dependent age five or older claimed on a tax return. Millions of young children suddenly needed numbers.
The SSA responded with a pilot called Enumeration at Birth in August 1987, launched in three states. Parents could request a number for a newborn as part of hospital birth registration. By the end of 1991, 45 states, the District of Columbia, Puerto Rico, and New York City had joined.11Social Security Administration. The Story of the Social Security Number The hospital collects the information and sends it electronically to the SSA, which mails the card to the parents. It is now the standard way nearly every American citizen receives a number.
The Three Cards Issued Today
The SSA currently issues three versions of the card. An unrestricted card shows only your name and number and is issued to U.S. citizens and lawful permanent residents. A card marked “Valid for Work Only With DHS Authorization” is issued to people lawfully admitted on a temporary basis who have work authorization from the Department of Homeland Security. A card marked “Not Valid for Employment” is issued to people from other countries who need a number for a non-work reason, such as receiving a government benefit that federal law ties to having one.
Non-citizens applying for a number generally must be authorized to work by DHS. They have to present current immigration documents, such as a Permanent Resident Card, Employment Authorization Document, or Arrival/Departure Record, along with an unexpired foreign passport. The SSA accepts only originals or copies certified by the issuing agency.12Social Security Administration. Social Security Numbers For Noncitizens
Nearly nine decades after those first paper cards left the typing centers in 1936, the document has moved from a hand-typed tear-off strip to a banknote-paper card with an intaglio-printed number assigned at random from Baltimore. The purpose is still the one the Social Security Board wrote down in 1936: give each worker a unique number and a card to prove it.