Muskegon · Eastern Timesince 1999 · no overlay735 reported · 30 daysrank 71 of 331updated 8 Oct 2026
Area code 231 — Muskegon, Michigan
Area code
231
Location
Muskegon, Michigan
Location
Muskegon, Michigan
Status
Active since 1999
Spam reports · 30 days
735 numbers
Area code 231 covers Muskegon and surrounding communities in Michigan.
Updated 8 October 2026
Area code 231 is in Michigan, shown here with Muskegon marked.
Now in Muskegon
Eastern Time · UTC−5, UTC−4 in summer
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Eastern Time
Where you are—
Offset—
Callback window
Typical business hours, 9 to 5 Monday to Friday.
Typical business hours, 9 to 5 Monday to Friday, shown as the blue arc. A guide to when a real Muskegon office is likely to answer. It says nothing about who called you.
Source: North American Numbering Plan Administrator, retrieved 8 October 2026.
02
Is area code 231 a scam?
No. Area code 231 is a legitimate area code serving Muskegon since 1999. Scammers spoof caller ID to display 231 numbers, which is why complaints exist against a code that is itself genuine.
Neighbour spoofing is the reason a local-looking number is not a guarantee. A caller anywhere in the world can display a 231 number, and the number they display may belong to a real business in Muskegon that has nothing to do with the call.
The callerAnywhere in the worldSets the caller ID their equipment sends.
What is displayed(231) 468-6776May belong to a real Muskegon business.
Your phoneLooks localA nearby code and prefix make you likelier to answer.
735Area code 231 had 735 different numbers reported for spam calls in the 30 days to 8 October 2026.
71stArea code 231 ranks 71st of 331 US geographic area codes by spam complaint volume.
70%Of the 767 complaints about area code 231 in the 30 days to 8 October 2026, 70% were reported as a recorded message or robocall.
32%The most reported subject on area code 231 is reducing your debt (credit cards, mortgage, student loans), appearing in 32% of its complaints in the 30 days to 8 October 2026.
Why am I getting text messages from area code 231?
Texts from 231 numbers follow the same pattern as calls — mostly local businesses and services. Treat any text asking for payment or credentials as suspect regardless of the code.
The common patterns are a wrong-number opener that turns into conversation, an unsolicited job offer, and a crypto or investment tip. Do not reply, do not follow the link, and forward the message to 7726 (SPAM) to report it to your carrier.
Pattern 1Wrong-number openerTurns into conversation.
Pattern 2Unsolicited job offerDo not reply, do not follow the link.
Pattern 3Crypto or investment tipTreat any payment ask as suspect.
Report it7726Forward the message. It spells SPAM on a keypad.
04 · The human layer
Who works in the Muskegon area?
Area code 231 covers the western and northwestern reaches of Michigan's Lower Peninsula, from Muskegon on Lake Michigan's shore up through Traverse City and the resort country beyond. Muskegon, Michigan carries the industrial end of the code. The town built ships and engines for a century, and manufacturing still matters, with foundries, metalworking shops, and suppliers tied to the furniture and auto industries of West Michigan. The port handles Great Lakes cargo, healthcare through Trinity Health Muskegon is a top employer, and the lakeshore's beaches pull a growing summer trade. In 2024 Muskegon's median household income was $44,735 and its employed population was about 14,300, per DataUSA.
Who lives in the 231 region
The city itself is small, around 37,000 people, and working-class in composition, with Black residents making up 10,800 of the population and a poverty rate of 24.9 percent in 2024, per DataUSA. The wider 231 territory tells a different story north of town, where Traverse City's wine, cherry, and tourism economy draws second-home money and the seasonal population swells every summer.
What a 231 number signals to a caller
Callers describe business across the 231 as neighborly and unhurried, done between people who expect to see each other at the hardware store. The code has covered the region since 1999, and it spans two economies, factory towns along the southern lakeshore and resort country to the north, so what a 231 number signals depends on the exchange behind it. Anyone dialling in should know the northern half of the code practically reschedules itself around summer, when tourism runs the calendar.
Area code 231 serves Muskegon and surrounding communities in Michigan. It is in the Eastern Time zone.
What state is area code 231 in?
Area code 231 is in Michigan. It is not in Los Angeles or Orlando or Chicago — those are area codes 213 and 321 and 312.
Is area code 231 toll free?
No. Area code 231 is a geographic area code serving Muskegon, Michigan. The toll-free codes are 800, 833, 844, 855, 866, 877, 888, and a call to a 231 number is charged at your normal rate.
Why am I getting calls from 231?
Calls displaying a 231 number come from businesses and individuals in the Muskegon area, and from anywhere at all when caller ID is spoofed to look local. 735 231 numbers were reported to the FTC in the 30 days to 8 October 2026.
How do I block calls from area code 231?
Both iOS and Android can silence calls from unknown numbers, and every major US carrier offers free call-blocking. Blocking the whole of area code 231 is rarely worth it, because spoofed numbers change constantly and you would lose legitimate calls from Muskegon.