How do I dial area code 231 from abroad?

Dial +1 231 followed by the 7-digit local number. For example: +1-231-XXX-XXXX.

DialHard - Area Code 231: Michigan

Q: What area does 231 cover?

Area code 231 covers Michigan in Michigan.

Q: What time zone is area code 231?

Area code 231 is in the Eastern Time time zone (EST).

What area does 231 cover?

Area code 231 covers Michigan in Michigan.

What time zone is area code 231?

Eastern Time (EST)

Current local time: --:--

Fair time to call this area

Early morning · OK for personal calls. Not ideal for business.

How do I dial area code 231?

From within the US

231-XXX-XXXX or 1-231-XXX-XXXX

Most areas require 10-digit dialing even for local calls.

From abroad

+1 231 XXX XXXX

Replace +1 with your country's international dialing prefix if your phone doesn't support +.

Storing in contacts

+1231XXXXXXX

Use E.164 format (+1 followed by all 10 digits) for maximum compatibility.

Is 231 a mobile or landline area code?

In the US, area codes don't distinguish between mobile and landline numbers. A 231 number could be either. Number portability allows people to keep their numbers when switching between mobile and landline service.

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