The Social Security Number of United States. This page is generated from the registry metadata of the library.
| Property | Value |
|---|---|
| Country code | USA, US |
| ID type | Social Security Number |
| Official name | Social Security Number (SSN) |
| Also known as | Social Security number; SSN |
| Display format | ###-##-#### |
| Input masks | ###-##-#### |
| Length | 9 |
| Example | 123-45-6789 |
| Checksum | no |
| Checksum algorithm | None (area/group/serial rules only) |
| Parsable | no |
The root entry registers every country:
import { validateNationalId } from 'idnumbers';
validateNationalId('USA', '123-45-6789').isValid; // true
To bundle only this country, import its definition from idnumbers/countries/usa and pass it to register():
import { register, validateNationalId } from 'idnumbers/core';
import { country } from 'idnumbers/countries/usa';
register(country);
validateNationalId('USA', '123-45-6789').isValid; // true