How many area codes does Michigan have?

Michigan has 11 active geographic area codes in the North American Numbering Plan: 231, 248, 269, 313, 517, 616, 734, 810, 906, 947, 989. Each code serves a distinct region or acts as an overlay for a high-demand metro area.

What is the oldest area code in Michigan?

The oldest area code in Michigan is 313, assigned in 1947. It serves Detroit and the Detroit City and Inner Suburbs region. 313 is one of the original 86 area codes created when the North American Numbering Plan was first established.

Can I get a Michigan phone number from anywhere?

Yes. DialPhone virtual phone numbers are not tied to a physical location. You can get a Michigan area code number and use it from any device — desktop, mobile, or browser — anywhere with an internet connection. This makes Michigan numbers ideal for remote teams, distributed businesses, and sales teams targeting Michigan customers.

How much does a Michigan area code number cost?

DialPhone plans start at $24 per user per month on the Core plan. Every plan includes your choice of Michigan area code number, unlimited US and Canada calling, business SMS, AI call captions, and a free 14-day trial — no credit card required. See the DialPhone pricing page for current tier details.

Can I port my existing Michigan number to DialPhone?

Yes. DialPhone supports free number porting from any major US or Canadian carrier, including existing Michigan area code numbers. Porting typically completes in 2 to 5 business days with zero service interruption. See the complete number porting guide for step-by-step instructions.

What time zones are used in Michigan?

Michigan area codes span the ET time zone. When scheduling calls with Michigan customers, verify the specific area code's time zone to avoid calling outside business hours.

Area Codes in Michigan — Local Business Phone Numbers

Quick answer

Michigan has 11 active geographic area codes covering Troy, Detroit, Pontiac. The most-recognized codes are 313, 616, 517, serving Troy and the Oakland County Michigan region.

Total codes: 11
Top metro: Troy
Time zone: ET
Largest code: 248 (Troy)

By Darshan M

Growth Operations Lead at DialPhone · Verified against NANPA data

Area codes in Michigan

Michigan is served by 11 active geographic area codes in the North American Numbering Plan. These codes were assigned between 1947 and 2013 as population and call demand grew across the state.

Code	Primary City	Region	Established	Overlay Codes	Population
231	Muskegon	Northwestern Michigan	1999	—	600,000
248	Troy	Oakland County Michigan	1997	947	1,400,000
269	Kalamazoo	Southwestern Michigan	2002	—	600,000
313	Detroit	Detroit City and Inner Suburbs	1947	—	1,400,000
517	Lansing	South-Central Michigan	1947	—	700,000
616	Grand Rapids	Western Michigan	1947	—	1,100,000
734	Ann Arbor	Southeastern Michigan	1997	—	900,000
810	Flint	Flint / Thumb Michigan	1993	—	800,000
906	Marquette	Upper Peninsula Michigan	1961	—	300,000
947	Pontiac	Oakland County Michigan	2013	248	1,400,000
989	Saginaw	Central Michigan	2001	—	600,000

Time zones in Michigan

All area codes in Michigan fall in the ET time zone.

ET — area codes: 231, 248, 269, 313, 517, 616, 734, 810, 906, 947, 989

Top metros and their area codes

Below are the primary cities in Michigan and the area codes that serve each metro. Cities with multiple codes share geography due to overlay assignments added as demand grew.

Ann Arbor — 734
Detroit — 313
Flint — 810
Grand Rapids — 616
Kalamazoo — 269
Lansing — 517
Marquette — 906
Muskegon — 231
Pontiac — 947
Saginaw — 989
Troy — 248

Why get a local Michigan number?

A Michigan area code number gives your business three core advantages:

Local trust signal. Customers in Michigan recognize local area codes as their own. A familiar caller ID builds immediate credibility for service businesses, sales teams, and patient communication.
Higher answer rate. Calls from a local area code are answered far more often than toll-free or out-of-area numbers — industry data puts the lift at 20–40%. That difference matters most for outbound sales, appointment confirmations, and service callbacks.
Targeted marketing. Advertising a local Michigan number on print, radio, digital, and outdoor channels converts better than a national 800 number for audiences who prefer doing business locally.

How to get a Michigan area code number with DialPhone

Setting up a Michigan business number takes under 10 minutes:

Sign up for a DialPhone plan. Choose any plan starting at $24/user/month. Free 14-day trial, no credit card required.
Search available Michigan numbers. Filter the DialPhone number inventory by state, area code, city, or number pattern.
Choose your number and configure. Assign your new Michigan number to a user or team, configure call routing, voicemail, AI receptionist, and business SMS.
Port your existing number (optional). Already have a Michigan number? Free number porting completes in 2 to 5 business days with zero service interruption.