Sweden: Personal Identification Numbers

A personal identification number is currently a ten-digit number. In previous years, they were only nine-digits. Example: 530225 – 1315

The first 6 digits are the modern style of a birth date. 53-02-25 would transfer to 1953-Feb-25. The following four numbers are more complicated. The first three numbers are chosen at random from 001-999. Odd numbers are given to males, even numbers to females.

The final number is determined by a mathematical equation utilizing the previous numbers. However, the importance of this number is not necessary for further explanation. Essentially, this system allows for a guarantee that no one would be given the same number, allowing for everyone to have a unique personal identification number.

The only thing which can be determined from someone’s number, should it be learned, is their birth date and gender. Nothing regarding place of birth or residence can be determined.

Usage of this number is necessary for paying taxes, getting married, and having employment.

Return to Population Registration.