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In the United States, a Social Security number (SSN) is a nine-digit number issued to U.S. citizens,
permanent residents Permanent residency is a person's legal resident status in a country or territory of which such person is not a citizen but where they have the right to reside on a permanent basis. This is usually for a permanent period; a person with such ...
, and temporary (working) residents under section 205(c)(2) of the
Social Security Act The Social Security Act of 1935 is a law enacted by the 74th United States Congress and signed into law by US President Franklin D. Roosevelt. The law created the Social Security program as well as insurance against unemployment. The law was pa ...
, codified as . The number is issued to an individual by the
Social Security Administration The United States Social Security Administration (SSA) is an Independent agencies of the United States government, independent agency of the Federal government of the United States, U.S. federal government that administers Social Security (United ...
, an
independent agency of the United States government Independent agencies of the United States federal government are agencies that exist outside the federal executive departments (those headed by a Cabinet secretary) and the Executive Office of the President. In a narrower sense, the term refers ...
. Although the original purpose for the number was for the Social Security Administration to track individuals, the Social Security number has
become Seventh Wonder is a Swedish progressive metal band from Stockholm, formed in 2000. History Seventh Wonder was formed in 2000 by bass player Andreas Blomqvist, guitarist Johan Liefvendahl and drummer Johnny Sandin after their previous band fel ...
a ''
de facto ''De facto'' ( ; , "in fact") describes practices that exist in reality, whether or not they are officially recognized by laws or other formal norms. It is commonly used to refer to what happens in practice, in contrast with ''de jure'' ("by la ...
''
national identification number A national identification number, national identity number, or national insurance number or JMBG/EMBG is used by the governments of many countries as a means of tracking their citizens, permanent residents, and temporary residents for the purp ...
for
taxation A tax is a compulsory financial charge or some other type of levy imposed on a taxpayer (an individual or legal person, legal entity) by a governmental organization in order to fund government spending and various public expenditures (regiona ...
and other purposes. A Social Security number may be obtained by applying on Form SS-5, Application for a Social Security Number Card.


History

Social Security numbers were first issued by the Social Security Administration in November 1936 as part of the
New Deal The New Deal was a series of programs, public work projects, financial reforms, and regulations enacted by President Franklin D. Roosevelt in the United States between 1933 and 1939. Major federal programs agencies included the Civilian Cons ...
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, New York New Rochelle (; older french: La Nouvelle-Rochelle) is a city in Westchester County, New York, United States, in the southeastern portion of the state. In 2020, the city had a population of 79,726, making it the seventh-largest in the state of ...
. 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 Concord () is the capital city of the U.S. state of New Hampshire and the seat of Merrimack County. As of the 2020 census the population was 43,976, making it the third largest city in New Hampshire behind Manchester and Nashua. The village of ...
. A re-evaluation of Social Security department policy against reuse in July 1976 allowed the request of 19 year old Brigham Young student Randy Jenkins from Glendale, Arizona to be granted the lowest SS number after the original woman given it had died a few years earlier. He later applied for a standard number due to often being questioned about the low number. 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 The Tax Reform Act of 1986 (TRA) was passed by the 99th United States Congress and signed into law by President Ronald Reagan on October 22, 1986. The Tax Reform Act of 1986 was the top domestic priority of President Reagan's second term. The ...
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 Tax deduction is a reduction of income that is able to be taxed and is commonly a result of expenses, particularly those incurred to produce additional income. Tax deductions are a form of tax incentives, along with exemptions and tax credits. T ...
. Before this act, parents claiming tax deductions were simply trusted not to lie about the number of children they supported. During the first year of the Tax Reform Act, this
anti-fraud Fraud deterrence has gained public recognition and spotlight since the 2002 inception of the Sarbanes-Oxley Act. Of the many reforms enacted through Sarbanes-Oxley, one major goal was to regain public confidence in the reliability of financial mark ...
change resulted in seven million fewer minor dependents being claimed. The disappearance of these dependents is believed to have involved either children who never existed or tax deductions improperly claimed by non-custodial parents. In 1988, the threshold was lowered to two years old, and in 1990, the threshold was lowered yet again to one year old. Today, an SSN is required regardless of the child's age to receive an exemption. Since then, parents have often applied for Social Security numbers for their children soon after birth; today, it can be done on the application for a
birth certificate A birth certificate is a vital record that documents the birth of a person. The term "birth certificate" can refer to either the original document certifying the circumstances of the birth or to a certified copy of or representation of the ensuin ...
.


Purpose and use

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 Credit (from Latin verb ''credit'', meaning "one believes") is the trust which allows one party to provide money or resources to another party wherein the second party does not reimburse the first party immediately (thereby generating a debt) ...
records are sometimes indexed by Social Security number. The
U.S. Armed Forces The United States Armed Forces are the military forces of the United States. The armed forces consists of six service branches: the Army, Marine Corps, Navy, Air Force, Space Force, and Coast Guard. The president of the United States is the ...
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 Defense Enrollment Eligibility Reporting System (DEERS) is a computerized database for United States Service members, military retirees, 100% VA Disabled Veterans, dependents, DoD active Contractors, and others worldwide who are entitled to Public K ...
.


Non-universal status

Social Security Welfare, or commonly social welfare, is a type of government support intended to ensure that members of a society can meet basic human needs such as food and shelter. Social security may either be synonymous with welfare, or refer specificall ...
was originally a universal tax, but when Medicare was passed in 1965, objecting religious groups in existence prior to 1951 were allowed to opt out of the system. Because of this, not every American is part of the Social Security program, and not everyone has a number. However, a Social Security number is required for parents to claim their children as dependents for federal income tax purposes, and the Internal Revenue Service requires all corporations to obtain SSNs (or alternative identifying numbers) from their employees, as described below. The
Old Order Amish The Amish (; pdc, Amisch; german: link=no, Amische), formally the Old Order Amish, are a group of traditionalist Anabaptism, Anabaptist Christianity, Christian church fellowships with Swiss German and Alsace, Alsatian origins. They are close ...
have fought to prevent universal Social Security by overturning rules such as a requirement to provide a Social Security number for a hunting license. Social Security cards printed from January 1946 until January 1972 expressly stated that people should not use the number and card for identification. Since nearly everyone in the United States now has an SSN, it became convenient to use it anyway and the message was removed. Since then, Social Security numbers have become ''
de facto ''De facto'' ( ; , "in fact") describes practices that exist in reality, whether or not they are officially recognized by laws or other formal norms. It is commonly used to refer to what happens in practice, in contrast with ''de jure'' ("by la ...
''
national identification number A national identification number, national identity number, or national insurance number or JMBG/EMBG is used by the governments of many countries as a means of tracking their citizens, permanent residents, and temporary residents for the purp ...
s. Although some people do not have an SSN assigned to them, it is becoming increasingly difficult to engage in legitimate financial activities such as applying for a loan or a bank account without one. While the government cannot require an individual to disclose their SSN without a legal basis, companies may refuse to provide service to an individual who does not provide an SSN. The card on which an SSN is issued is still not suitable for primary identification as it has no photograph, no physical description, and no birth date. All it does is confirm that a particular number has been issued to a particular name. Instead, a
driver's license A driver's license is a legal authorization, or the official document confirming such an authorization, for a specific individual to operate one or more types of motorized vehicles—such as motorcycles, cars, trucks, or buses—on a public ...
or state ID card is used as an identification for adults.


Use required for federal tax purposes

Internal Revenue Code The Internal Revenue Code (IRC), formally the Internal Revenue Code of 1986, is the domestic portion of federal statutory tax law in the United States, published in various volumes of the United States Statutes at Large, and separately as Title 26 ...
section 6109(d) provides: "The social security account number issued to an individual for purposes of section 205(c)(2)(A) of the Social Security Act odified as shall, except as shall otherwise be specified under regulations of the Secretary
f the Treasury or his delegate F, or f, is the sixth letter in the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''ef'' (pronounced ), and the plural is ''efs''. Hist ...
be used as the identifying number for such individual for purposes of this title he_Internal_Revenue_Code,_title_26_of_the_United_States_Code.html" ;"title="United_States_Code.html" ;"title="he Internal Revenue Code, title 26 of the United States Code">he Internal Revenue Code, title 26 of the United States Code">United_States_Code.html" ;"title="he Internal Revenue Code, title 26 of the United States Code">he Internal Revenue Code, title 26 of the United States Code" The Internal Revenue Code also provides, when required by regulations prescribed by the secretary of the treasury or their delegate: * Inclusion in returns: Any person required under the authority of this title to make a return, statement, or other document shall include in such return, statement, or other document such identifying number as may be prescribed for securing proper identification of such person. * Furnishing number to other persons: Any person with respect to whom a return, statement, or other document is required under the authority of this title to be made by another person or whose identifying number is required to be shown on a return of another person shall furnish to such other person such identifying number as may be prescribed for securing their proper identification. According to U.S. Treasury regulations, any person who, after October 31, 1962, works as an employee for wages subject to Social Security taxes, Medicare taxes, or U.S. federal income tax withholdings is required to apply for "an account number" using Form SS-5. A taxpayer who is not eligible to have a Social Security number must obtain an alternative Taxpayer Identification Number.


Types of Social Security cards

Four different classifications of Social Security cards are issued. Such cards are issued by geographic location (SSN Area Number) to: # persons of natural birth within the territorial boundaries of any one of the member States of the United States of America; # persons who become U.S. citizens by oath, or birth within the exclusive legislative or territorial jurisdiction of the U.S. government; # persons who become U.S. permanent residents; # persons with certain restrictions. There are two restricted types of Social Security cards: * One reads "not valid for employment." Such cards cannot be used as proof of work authorization, and are not acceptable as a List C document on the I-9 form. * The other reads "valid for work only with
DHS The United States Department of Homeland Security (DHS) is the U.S. federal executive department responsible for public security, roughly comparable to the interior or home ministries of other countries. Its stated missions involve anti-ter ...
authorization", or the older, "valid for work only with INS authorization." These cards are issued to people who have temporary work authorization in the U.S from the Department of Homeland Security -- the nation's border agency. They can satisfy the I-9 requirement, if they are accompanied by a work authorization card. The cards commonly display the cardholder's name and number. In 2004 Congress passed The Intelligence Reform and Terrorism Prevention Act; parts of which mandated that the Social Security Administration redesign the SSN card to prevent forgery. From April 2006 through August 2007, the SSA and
Government Printing Office The United States Government Publishing Office (USGPO or GPO; formerly the United States Government Printing Office) is an agency of the legislative branch of the United States Federal government. The office produces and distributes information ...
(GPO) employees were assigned to redesign the Social Security number card to the specifications of the Interagency Task Force created by the commissioner of Social Security in consultation with the secretary of Homeland Security. The new SSN card design utilizes both covert and overt security features created by the SSA and GPO design teams.


Identity theft

Many citizens and
privacy Privacy (, ) is the ability of an individual or group to seclude themselves or information about themselves, and thereby express themselves selectively. The domain of privacy partially overlaps with security, which can include the concepts of a ...
advocates are concerned about the disclosure and processing of Social Security numbers. Furthermore, researchers at
Carnegie Mellon University Carnegie Mellon University (CMU) is a private research university in Pittsburgh, Pennsylvania. One of its predecessors was established in 1900 by Andrew Carnegie as the Carnegie Technical Schools; it became the Carnegie Institute of Technology ...
have demonstrated an algorithm that uses publicly available personal information to reconstruct a given SSN. The SSN is frequently used by those involved in
identity theft Identity theft occurs when someone uses another person's personal identifying information, like their name, identifying number, or credit card number, without their permission, to commit fraud or other crimes. The term ''identity theft'' was co ...
. This is because it is interconnected with many other forms of identification and people asking for it treat it as an authenticator. Financial institutions generally require an SSN to set up
bank account A bank account is a financial account maintained by a bank or other financial institution in which the financial transactions between the bank and a customer are recorded. Each financial institution sets the terms and conditions for each type o ...
s,
credit card A credit card is a payment card issued to users (cardholders) to enable the cardholder to pay a merchant for goods and services based on the cardholder's accrued debt (i.e., promise to the card issuer to pay them for the amounts plus the o ...
s, and
loans In finance, a loan is the lending of money by one or more individuals, organizations, or other entities to other individuals, organizations, etc. The recipient (i.e., the borrower) incurs a debt and is usually liable to pay interest on that de ...
—partly because they assume that no one except the person it was issued to knows it. Exacerbating the problem of using the Social Security number as an identifier is the fact that the Social Security card contains no
biometric Biometrics are body measurements and calculations related to human characteristics. Biometric authentication (or realistic authentication) is used in computer science as a form of identification and access control. It is also used to identify in ...
identifiers of any sort, making it essentially impossible to tell whether a person using a certain SSN truly belongs to someone without relying on other documentation (which may itself have been falsely procured through use of the fraudulent SSN). Congress has proposed federal laws that restrict the use of SSNs for identification and bans their use for a number of commercial purposes—e.g., rental applications. The
Internal Revenue Service The Internal Revenue Service (IRS) is the revenue service for the United States federal government, which is responsible for collecting U.S. federal taxes and administering the Internal Revenue Code, the main body of the federal statutory ta ...
(IRS) offers alternatives to SSNs in some places where providing untrusted parties with identification numbers is essential. Tax return preparers must obtain and use a Preparer Tax Identification Number (PTIN) to include on their client's tax returns (as part of signature requirements). Day care services have tax benefits, and even a sole proprietor should give parents an EIN (employer identification number) to use on their tax return. The Social Security Administration has suggested that, if asked to provide their Social Security number, a citizen should ask which law requires its use. In accordance with §7213 of the
9/11 Commission Implementation Act of 2004 The Intelligence Reform and Terrorism Prevention Act of 2004 (IRTPA) is a 235-page Act of Congress, signed by President George W. Bush, that broadly affects United States federal terrorism laws. The act comprises several separate titles with va ...
and , the number of replacement Social Security cards per person is generally limited to three per calendar year and ten in a lifetime. Identity confusion has also occurred because of the use of local Social Security numbers by the Federated States of Micronesia, the Republic of the Marshall Islands, and the Republic of Palau, whose numbers overlap with those of residents of New Hampshire and Maine. Similarly, Social Security numbers are often valued information for hackers to gain in attacks such as social engineering attacks, where attackers try and manipulate people into disclosing private information. For example, in the social engineering attack involving Hewlett-Packard, executives hired private investigators to manipulate phone companies into disclosing calling information and social security numbers of employees they suspected were leaking information to the press.


Replacement numbers

A person can request a new Social Security number, but only under certain conditions: * Where sequential numbers assigned to members of the same family are causing problems. * In the event of duplicates having been issued. * In cases where the person has been a victim of domestic violence or harassment, and there is a clear need to change their number for their personal safety. * When a person has been a victim of identity theft, and his/her Social Security number continues to be problematic. * Where a person has a demonstrable religious objection to a number (such as certain Christians being averse to the number
666 666 may refer to: * 666 (number) * 666 BC, a year * AD 666, a year * The number of the beast, a reference in the Book of Revelation in the New Testament Places * 666 Desdemona, a minor planet in the asteroid belt * U.S. Route 666, an America ...
). For all of these conditions, credible third-party evidence such as a restraining order or police report is required.


Structure

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: * 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. Because
Individual Taxpayer Identification Number An Individual Taxpayer Identification Number (ITIN) is a United States tax processing number issued by the Internal Revenue Service (IRS). It is a nine-digit number beginning with the number “9”, has a range of numbers from "50" to "65", "70" ...
s (ITINs) are issued by the IRS, they were not affected by this SSA change.


Historical structure

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 cards centrally from
Baltimore Baltimore ( , locally: or ) is the List of municipalities in Maryland, most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic (United States), Mid-Atlantic, and List of United States cities by popula ...
, 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 The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography. A compass rose is primarily composed of four cardinal directions—north, east, south, and west—each se ...
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 locality were exhausted, new areas from the pool were assigned, so some states had noncontiguous groups of numbers. The middle two digits or ''group number'' range from 01 to 99. Even before SSN randomization, the group numbers were not assigned consecutively within an area. Instead, for administrative reasons, group numbers were issued in the following order: # odd numbers from 01 through 09 # even numbers from 10 through 98 # even numbers from 02 through 08 # odd numbers from 11 through 99 As an example, group number 98 would be issued before 11. The last four digits, which are ''serial numbers'', "are the most important to protect" and they can "open credit in your name, steal your money" and more. Before SSN randomization took effect, they represented a straight numerical sequence of digits from 0001 to 9999 within the group.


Valid SSNs

Prior to June 25, 2011, a valid SSN could not have an area number between 734 and 749, or above 772, the highest area number the Social Security Administration had allocated. Effective June 25, 2011, the SSA assigns SSNs randomly and allows for the assignment of area numbers between 734 and 749 and above 772 through the 800s. This should not be confused with Tax Identification Numbers (TINs), which include additional area numbers. Some special numbers are never allocated: * Numbers with all zeros in any digit group (''000''-##-####, ###-''00''-####, ###-##-''0000''). * Numbers with 666 or 900–999 (Individual Taxpayer Identification Number) in the first digit group. Until 2011, the SSA published the last group number used for each area number. Since group numbers were allocated in a regular pattern, it was possible to identify an unissued SSN that contained an invalid group number. Now numbers are assigned randomly, and fraudulent SSNs are not easily detectable with publicly available information. Many online services, however, provide SSN validation. Unlike many similar numbers, no
check digit A check digit is a form of redundancy check used for error detection on identification numbers, such as bank account numbers, which are used in an application where they will at least sometimes be input manually. It is analogous to a binary parity ...
is included.


Exhaustion and re-use

The Social Security Administration does not reuse Social Security numbers. It has issued over 450 million since the start of the program, and at a use rate of about 5.5 million per year. It says it has enough to last several generations without reuse or changing the number of digits. However, there have been instances where multiple individuals have been inadvertently assigned the same Social Security number.


SSNs used in advertising

Some SSNs used in advertising have rendered those numbers invalid. One famous instance of this occurred in 1938 when the E. H. Ferree Company in
Lockport, New York Lockport is both a city and the Lockport (town), New York, town that surrounds it in Niagara County, New York, Niagara County, New York (state), New York. The city is the Niagara county seat, with a population of 21,165 according to 2010 census ...
, decided to promote its product by showing how a Social Security card would fit into its wallets. A sample card, used for display purposes, was placed in each wallet, which was sold by Woolworth and other department stores across the country; the wallet manufacturer's vice president and treasurer Douglas Patterson used the actual SSN of his secretary, Hilda Schrader Whitcher. Even though the card was printed in red (the real card is printed in blue) and had "specimen" printed across the front, many people used Whitcher's SSN as their own. The Social Security Administration's account of the incident also claims that the fake card was half the size of a real card, despite a miniature card being useless for its purpose and despite Whitcher's holding two cards of apparently identical size in the accompanying photograph. Over time, the number that appeared (078-05-1120) has been claimed by a total of over 40,000 people as their own. The SSA initiated an advertising campaign stating that it was incorrect to use the number (Hilda Whitcher was issued a new SSN). However, the number was found to be in use by 12 individuals as late as 1977. More recently, Todd Davis distributed his SSN in advertisements for his company's
LifeLock LifeLock Inc. is an American identity theft protection company based in Tempe, Arizona. LifeLock's system monitors for identity theft, the use of personal information, and credit score changes. LifeLock was acquired by computer security compan ...
identity theft protection service, which allowed his identity to be stolen over a dozen times.


List of Social Security area numbers

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.


See also

*
Death Master File The Death Master File (DMF) is a computer database file made available by the United States Social Security Administration since 1980. It is known commercially as the Social Security Death Index (SSDI). The file contains information about persons w ...
*
National identification number A national identification number, national identity number, or national insurance number or JMBG/EMBG is used by the governments of many countries as a means of tracking their citizens, permanent residents, and temporary residents for the purp ...
* Personally identifiable information


References


External links


Social Security Administration


"The most misused SSN of all time was (078-05-1120)." *
PDF version
{{National identification numbers National identification numbers Social security in the United States Taxation in the United States Unique identifiers