Are Social Security numbers unique?

Answer A Social Security number (SSN) is a nine-digit number assigned to each United States resident. Yes, each number is unique. The purpose of an SSN is to identify a person by number instead of name. ... Read More »

Top Q&A For: Are Social Security numbers unique

Are the numbers on the back of the Social Security card the routing numbers for the Federal Reserve?

Newer cards issued by the Social Security Administration have a red number printed on the back. Rumors state that these numbers signify a routing or account number within the Federal Reserve bankin... Read More »

How many different social security numbers can there be?

A social security number is nine digits. Therefore, there are 1 billion unique numbers that can be created. However, it's unlikely that the Social Security Department would issue numbers such as "0... Read More »

How many possible Social Security numbers are there?

Social Security numbers are nine digits long, making a possible one billion number combinations. When you omit the numbers where one block would be made up of all zeroes, you're left with 988,911,0... Read More »

Are Social Security numbers screened at the DMV?

Your Social Security number is electronically verified at the DMV when you apply for a license, for a registration renewal, or for other documents and procedures that require you to verify your ide... Read More »