Cities in area code 586

11 localities · NANPA data, current as of July 28, 2026.

These are the cities and communities covered by 586 in Michigan. "Covered" means the locality is a rate center holding 586 prefixes; the largest are Mount Clemens, Warren, Roseville.

By numbering footprint the leading localities are Mount Clemens, Warren, Roseville, Center Line, Utica, Romeo, Washington and New Baltimore, and 2 smaller communities down to single-prefix localities. Prefix counts track lines in service, so the ranking is a reasonable proxy for where the code's subscribers actually are.

11 of the localities fall within FCC top-100 metropolitan statistical areas; the rest are smaller communities.

All of the code's territory keeps Eastern time.

Remember that people keep numbers when they relocate, so a 586 number is a where-it-was-issued fact, not a where-they-are fact.

FAQ

What is the biggest city in area code 586?

Mount Clemens holds the most active prefixes (189), making it the code's largest numbering locality.

How many places does 586 cover?

11 rate centers in Michigan hold active 586 prefixes, from Mount Clemens down to communities with a single prefix.

Does a 586 number guarantee the caller lives in one of these places?

No — the tables show where number blocks were issued. Porting and VoIP let people keep or acquire numbers anywhere.