Social Security Number Prefixes by State
Prefix Lookup
Search historical SSN area numbers
| Prefix | State Code | State Name |
|---|---|---|
| 536 | NM | New Mexico |
| 536 | WA | Washington |
| 537 | WA | Washington |
| 537 | NM | New Mexico |
| 538 | WA | Washington |
| 538 | NM | New Mexico |
| 539 | NM | New Mexico |
| 539 | WA | Washington |
| 540 | OR | Oregon |
| 540 | NM | New Mexico |
| 541 | NM | New Mexico |
| 541 | OR | Oregon |
| 542 | NM | New Mexico |
| 542 | OR | Oregon |
| 543 | OR | Oregon |
| 543 | NM | New Mexico |
| 544 | NM | New Mexico |
| 544 | OR | Oregon |
| 545 | NM | New Mexico |
| 545 | CA | California |