Michigan Area Codes
Compare 13 in-service area codes assigned to Michigan. Explore each code’s introduction date, overlays, possible time zones, and public prefix records.
Michigan numbering at a glance
- In-service area codes
- 13
- Time-zone labels in NANPA data
- Eastern, Central
- Listed in-service or assigned prefixes
- 6,864 · source dated 2026-09-29
These are numbering assignments. The counts do not represent active phone numbers, current carriers, or a caller’s physical location.
Compare area codes in Michigan
| Code | Introduced | Other codes in overlay | Time zones | Listed prefixes |
|---|---|---|---|---|
| 231 | 05-Jun-1999 | None listed | Eastern | 572 |
| 248 | 10-May-1997 | 947 | Eastern | 784 |
| 269 | 13-Jul-2002 | None listed | Eastern | 543 |
| 313 | 01-Jan-1947 | 679 | Eastern | 766 |
| 517 | 01-Jan-1947 | None listed | Eastern | 613 |
| 586 | 22-Sep-2001 | None listed | Eastern | 546 |
| 616 | 01-Jan-1947 | None listed | Eastern | 544 |
| 679 | 07-Nov-2025 | 313 | Eastern | — |
| 734 | 13-Dec-1997 | 679 | Eastern | 700 |
| 810 | 01-Dec-1993 | None listed | Eastern | 507 |
| 906 | 19-Mar-1961 | None listed | Eastern, Central | 358 |
| 947 | 07-Sep-2002 | 248 | Eastern | 209 |
| 989 | 07-Apr-2001 | None listed | Eastern | 722 |
Source: NANPA NPA database, dated 2026-09-28. Prefix counts: NANPA US assignment report. View official area-code maps.
Overlay groups in Michigan
Codes in an overlay group can serve the same broad numbering area. A person may keep a number after moving, and the displayed number may be spoofed.
Find a number in Michigan
Open an area-code page above to check a prefix and possible time zones. You can also search US telephone rate-center names; those names are not exact city coverage.
A code cannot verify the owner of a number. If an unexpected caller asks for money or sensitive information, verify the claim independently.