586 area code — Mount Clemens, MI geographic
The 586 area code covers Mount Clemens, Michigan, Eastern time zone, and dates back to September 22, 2001. Keep in mind the code identifies where the number was registered; the person calling may be elsewhere.
The code currently holds 544 working prefixes, held by 29 different carriers. Of these, 385 are pooled prefixes shared by multiple carriers. Numbers are anchored to 11 rate centers — billing localities that fix where each prefix belongs.
The current NANPA exhaust forecast is 1Q 2082.
Local calls inside 586 are dialed 7D.
Practical takeaway: the 586 label narrows geography to Michigan, the prefix narrows it to a locality, and neither authenticates a caller. Verification means calling back through a number you found yourself.
The code was carved out of 810 (2001).
Largest localities in 586
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Mount Clemens | 189 | — |
| Warren | 132 | — |
| Roseville | 73 | — |
| Center Line | 43 | — |
| Utica | 32 | — |
| Romeo | 21 | — |
| Washington | 13 | — |
| New Baltimore | 11 | — |
| New Haven | 11 | — |
| Armada | 11 | — |
FAQ
Will 586 run out of numbers?
NANPA's current forecast projects exhaust in 1Q 2082 — decades of capacity remain.
Why am I getting spam calls from 586 numbers?
Scammers spoof recognizable area codes so calls look local or familiar. A displayed 586 number does not prove the call originated there — see our guide to spotting spoofed calls.
Where is a 586 number from?
586 is assigned to Mount Clemens and surrounding areas of Michigan in the Eastern time zone. The three digits after the area code (the prefix) narrow it down to a rate center.