South KoreaResident Registration Number
Also known as: 주민등록번호 · RRN · 住民登錄番號 · Jumin Deungnok Beonho
Specification
Format
YYMMDD-GSSSSSS
- Other characters are positional codes or literal separators — see the references below.
- Length
- 13–14 characters
- Checksum
- No
Only the format is checked — this number has no check digit.
- Embedded data
- Yes
A valid number encodes details such as birth date, gender, or region. The validator extracts them locally in your browser.
Sample test value
200924-4227088This value was randomly generated to satisfy the format and check-digit rules. It is not a real ID and does not belong to any person.
Ready to check a number?
Validate a South Korea Resident Registration Number now — it runs in your browser and the number never leaves your device.
Try it in the validatorValidation rules for South Korea come from the open-source idnumbers library. Report a format issue on GitHub