Title: Social Security number
Content:  Social Security numbers were first issued by the Social Security Administration in November 1935 as part of the New Deal Social Security program. Within three months, 25 million numbers were issued. On November 24, 1936, 1,074 of the nation's 45,000 post offices were designated "typing centers" to type up Social Security cards that were then sent to Washington, D.C. On December 1, 1936, as part of the publicity campaign for the new program, Joseph L. Fay of the Social Security Administration selected a record from the top of the first stack of 1,000 records and announced that the first Social Security number in history was assigned to John David Sweeney, Jr., of New Rochelle, 
Title: Social Security number
Content:  York. However, since the Social Security numbers were not assigned in chronological order, Sweeney did not receive the lowest Social Security number, 001-01-0001. That distinction belongs to Grace D. Owen of Concord, New Hampshire. Before 1986, people often did not obtain a Social Security number until the age of about 14, since the numbers were used for income tracking purposes, and those under that age seldom had substantial income. The Tax Reform Act of 1986 required parents to list Social Security numbers for each dependent over the age of 5 for whom the parent wanted to claim a tax deduction. Before this act, parents claiming tax deductions were simply trusted not to lie about 
Title: Social Security number
Content: 1)  odd numbers from 01 through 09 ; 2)  even numbers from 10 through 98 ; 3)  even numbers from 02 through 08 ; 4)  odd numbers from 11 through 99 Prior to the 2011 randomization process, the first three digits or area numbers were assigned by geographical region. Prior to 1973, cards were issued in local Social Security offices around the country and the area number represented the office code where the card was issued. This did not necessarily have to be in the area where the applicant lived, since a person could apply for their card in any Social Security office. Beginning in 1973, when the SSA began assigning SSNs and issuing 
Title: South Korean identity card
Content:   Social Security numbers have its origins in the social security legislation in 1962. At that time its dual enrollment to citizens and residents was available so it was not performed properly. Then in 1968, after the ‘Kim Shin -jo incident’, when North Korean special forces stormed The Blue House, it amended the Social Security Act because Spy identifies were given a number to each citizen. Social security number at the time consisted of 12 digits. In November 21, it was issued by former President Park Chung-hee identity card No. 1 to No. 110101-100001, and Mrs. Yuk Young-soo, was issued a second call to a number 110101-200002. At this time the front row was made with a number of regional issues, the back has been issued Order.
Title: Social Security number
Content: It eliminated the geographical significance of the first three digits of the SSN, referred to as the area number, by no longer allocating specific numbers by state for assignment to individuals. ; It eliminated the significance of the highest group number assigned for each area number, and, as a result, the High Group List is frozen in time and can be used for validation of only those SSNs issued prior to the randomization implementation date. ; Previously unassigned area numbers have been introduced for assignment, excluding area numbers 000, 666 and 900–999. The Social Security number is a nine-digit number in the format "AAA-GG-SSSS". The number is divided into three parts: the first three digits, known as the area number because they were formerly assigned by geographical region; the middle two digits, known as the group number; and the final four digits, known as the serial number. On June 25, 2011, the SSA changed the SSN assignment process to "SSN randomization". SSN randomization affected the SSN assignment process in the following ways: Because Individual Taxpayer Identification Numbers (ITINs) are issued by the IRS, they were not affected by this SSA change.
Title: Social Security number
Content:  centrally from Baltimore, the area number was assigned based on the ZIP Code in the mailing address provided on the application for the original Social Security card. The applicant's mailing address did not have to be the same as their place of residence. Thus, the area number did not necessarily represent the state of residence of the applicant regardless of whether the card was issued prior to, or after, 1973. Generally, numbers were assigned beginning in the northeast and moving south and westward, so that people applying from addresses on the east coast had the lowest numbers and those on the west coast had the highest numbers. As the areas assigned to a 
Title: Social Security number
Content:  List showing the geographical location of the first three digits of the Social Security numbers assigned in the United States and its territories from 1973 until June 25, 2011. Repeated numbers indicate that they have been transferred to another location or they're shared by more than one location. On June 25, 2011, the SSA changed the SSN assignment process to "SSN randomization". SSN randomization affects the SSN assignment process. Among its changes, it eliminates the geographical significance of the first three digits of the SSN, previously referred to as the Area Number, by no longer allocating the Area Numbers for assignment to individuals in specific states. Hawaii: 750 to 751, Mississippi: 752 to 755, Tennessee: 756 to 763, Arizona: 764 to 765, Florida: 766 to 772.
Title: Social Security number
Content:  The original purpose of this number was to track individuals' accounts within the Social Security program. It has since come to be used as an identifier for individuals within the United States, although rare errors occur where duplicates do exist. A few duplications did occur when prenumbered cards were sent out to regional SSA offices and (originally) post offices. Employee, patient, student, and credit records are sometimes indexed by Social Security number. The U.S. Armed Forces have used the Social Security number as an identification number for Army and Air Force personnel since July 1, 1969, the Navy and Marine Corps for their personnel since January 1, 1972, and the Coast Guard for their personnel since October 1, 1974. Previously, the United States military used a much more complicated system of service numbers that varied by service. Beginning in June 2011, the DOD began removing the Social Security number from military identification cards, replacing them with a unique DOD identification number, formally known as the EDIPI.
Title: Social Security number
Content:  In the United States, a Social Security number (SSN) is a nine-digit number issued to U.S. citizens, permanent residents, and temporary (working) residents under section 205(c)(2) of the Social Security Act, codified as. The number is issued to an individual by the Social Security Administration, an independent agency of the United States government. Although the original purpose for the number was for the Social Security Administration to track individuals, the Social Security number has become a de facto national identification number for taxation and other purposes. A Social Security number may be obtained by applying on Form SS-5, Application for a Social Security Number Card.
Title: National identification number
Content:  of birth and SSSS is a sequence number. The first digit of the sequence number encodes the century of birth (so that centenarians are distinguished from infants, 0–4 in odd centuries, 5–9 in even centuries), and the last digit of the sequence number is odd for males and even for females. Prior to 2007, the last digit was also a check digit such that less than 240 SSSS values were available for any given combination of gender and date of birth, but due to an administrative practice of assigning Jan 1 and similar dates for immigrants with unknown date of birth, any SSSS value consistent with gender and century of birth may now be issued, even for birth dates prior to 2007. 

Question: when did they start assigning social security numbers at birth?
Answer: 1990.