Social Security Number Prefixes by State
Prefix Lookup
Search historical SSN area numbers
| Prefix | State Code | State Name |
|---|---|---|
| 366 | MI | Michigan |
| 367 | MI | Michigan |
| 368 | MI | Michigan |
| 369 | MI | Michigan |
| 370 | MI | Michigan |
| 371 | MI | Michigan |
| 372 | MI | Michigan |
| 373 | MI | Michigan |
| 374 | MI | Michigan |
| 375 | MI | Michigan |
| 376 | MI | Michigan |
| 377 | MI | Michigan |
| 378 | MI | Michigan |
| 379 | MI | Michigan |
| 380 | MI | Michigan |
| 381 | MI | Michigan |
| 382 | MI | Michigan |
| 383 | MI | Michigan |
| 384 | MI | Michigan |
| 385 | MI | Michigan |