Editing National identification number (section)

=== South Korea ===
{{Main|Resident registration number}}
In South Korea, every Korean resident is assigned a Resident's Registration Number (주민등록번호), which has the form 000000–0000000. The first six digits is their birthday in the format YYMMDD. The first digit of the last seven digits is determined by the century of birth and the gender as follows:

* 1: males, holding Korean nationality, born 1900–1999
* 2: females, holding Korean nationality, born 1900–1999
* 3: males, holding Korean nationality, born 2000–2099
* 4: females, holding Korean nationality, born 2000–2099
* 5: male foreigners sojourn in Korea, born 1900–1999
* 6: female foreigners sojourn in Korea, born 1900–1999
* 7: male foreigners sojourn in Korea, born 2000–2099
* 8: female foreigners sojourn in Korea, born 2000–2099
* 9: males, holding Korean nationality, born before 1900
* 0: females, holding Korean nationality, born before 1900

(For example, a male citizen who was born on 27 May 2001 is assigned the number 010527‒3******, and a female citizen which was born on 24 March 1975 is assigned the number 750324‒2******.)

The next four digits mean the region of his/her birth registration, and the next 1 digit is a serial number of registration within the date and the region. The last digit is a [[check digit]].