Where is the 231 area code?

The 231 area code covers Muskegon, Michigan (Eastern Time).

Are calls from 231 spam?

Not all 231 calls are spam, but scammers often spoof local 231 numbers ("neighbor spoofing") so a call looks familiar. Look up the specific number to check.

231 area code

Muskegon, Michigan · Eastern Time

The 231 area code serves Muskegon, Michigan. Getting a call from 231? It may be a real local caller — but scammers frequently spoof local 231 numbers so the call looks familiar (“neighbor spoofing”), even when they’re nowhere near Muskegon.

Recently reported 231 numbers

No 231 numbers have been reported here yet. If a 231 number called you, look it up above and add a report to warn others.

Common scams using 231 calls

🏛️ IRS / Tax Scam

"You owe back taxes — pay now or be arrested."

🪪 Social Security Scam

"Your Social Security number has been suspended."

🚗 Auto Warranty Robocall

"Your car's extended warranty is about to expire."

📦 Package / Amazon Scam

"There's a problem with your delivery / Amazon order."

Area-code information reflects where numbers in 231 are normally assigned. Caller ID can be spoofed, so a 231call may not actually originate from Muskegon, Michigan.