Wayne County · Michigan
Detroit, MI area codes and time zone
Quick answer
Detroit is served by area codes 231, 248, 313, 517, 586, 734, 947, keeps EST time (GMT-4), and sits in county FIPS 26163.
- Area codes
- 231 · 248 · 313 · 517 · 586 · 734 · 947Within 25 miles of the city centre
- Time zone
- ESTAmerica/Detroit
- UTC offset
- GMT-4EDT in summer
- County FIPS
- 26163Wayne County
Dialling from and to Detroit
What this means when you pick up the phone.
Because more than one code covers this area, ten-digit dialling applies for local calls: area code plus number, every time. From abroad, dial +1 then the ten digits.
More on Detroit
Other reference data for this city.