Area code 586

Area code 586 is the telephone area code serving Macomb County, Michigan. Its territory was originally part of area code 313 (which covered all of Southeast Michigan), and then became part of area code 810 (which was created in 1993 for all areas formerly covered by 313 outside of Monroe, Washtenaw and Wayne counties), until 2001 when 586 was assigned.

Major communities serviced by 586 include:

...
Wikipedia