Zip Area Code

Frontier, Michigan

Frontier, Michigan, in Hillsdale County, has ZIP code 49239 and area code 517.

ZIP code
49239
Area code
517
Time zone
Eastern Time
Coordinates
41.7825, -84.6047

ZIP codes in Frontier

ZIP codePost officeCountyArea codes
49239*FrontierHillsdale County517

* No mapped delivery area: P.O. boxes or a single organization. Area codes are those of the nearest ZIP code area.

Area code for Frontier

  • Area code 517

    In service since 1947. Local calls are dialed with seven digits; dialing ten digits also works.

Time zone

Frontier is in the Eastern Time zone.

Towns near Frontier