Michigan area codes

Codes in service in Michigan

Michigan has 13 geographic area codes in service: 231, 248, 269, 313, 517, 586, 616, 679, 734, 810, 906, 947, 989. 313 is the oldest, dated 1947, and 679 the newest, dated 7 Nov 2025.1 The time zones across Michigan's codes are Eastern and Eastern and Central.

Area code	NANPA location	NPA in-service date	In-service overlay peers	Time zone	Local calls within the code
231	MI	5 Jun 1999	None listed	Eastern	7 digits
248	MI	10 May 1997	947	Eastern	10 digits
269	MI	13 Jul 2002	None listed	Eastern	7 digits
313	MI	1947	679	Eastern	10 digits
517	MI	1947	None listed	Eastern	7 digits
586	MI	22 Sep 2001	None listed	Eastern	7 digits
616	MI	1947	None listed	Eastern	10 digits
679	MI	7 Nov 2025	313	Eastern	10 digits
734	MI	13 Dec 1997	679	Eastern	7 digits
810	MI	1 Dec 1993	None listed	Eastern	10 digits
906	MI	19 Mar 1961	None listed	Eastern and Central	10 digits
947	MI	7 Sep 2002	248	Eastern	10 digits
989	MI	7 Apr 2001	None listed	Eastern	10 digits

Scroll the table sideways to see every column. Sources: NANPA (14 October 2026 file).

History and overlays in Michigan

Before 1960: 313, 517, 616
1960 to 1989: 906
1990s: 810, 248, 734, 231
2000s: 989, 586, 269, 947
2020s: 679

Michigan's in-service overlay groups are 248/947; 313/679; 679/734.1

313/679: 313 (1947) was joined by 679 on 7 Nov 2025.
679/734: 734 (1997) was joined by 679 on 7 Nov 2025.
248/947: 248 (1997) was joined by 947 on 7 Sep 2002.

Dialing in Michigan

Local calls within a single area code in Michigan differ: 7 digits for 231, 269, 517, 586, 734; 10 digits for 248, 313, 616, 679, 810, 906, 947, 989. From any of Michigan's codes, local calls to another area code are all recorded as 10 digits.1 Seven-digit local dialing is still recorded for 231, 269, 517, 586, 734.

Neighbours of Michigan

Regions that border Michigan:

Indiana: 8 codes (219, 260, 317, 463, ...)
Ohio: 15 codes (216, 220, 234, 283, ...)
Wisconsin: 8 codes (262, 274, 353, 414, ...)
Ontario: 19 codes (226, 249, 289, 343, ...)

Rules that apply to every region are on the area-code reference.

Get a number in Michigan

Sign up and search for a local number by area code; the app shows only numbers in stock, and big-city codes often sell out, so no specific code is guaranteed.

Get started

Articles on this topic

Topics Business phone number Virtual phone number All topics

Article · 26 min read

How to Get a Business Phone Number: Options & Costs

Learn how to get a business phone number in 2026, compare eight option types and real team pricing, and check porting, identity, toll-free and emergency-calling requirements.

Article · 25 min read

Why Your Business Number Shows as Spam Likely

A 2026 US diagnostic guide to Spam Likely labels, covering CNAM, STIR/SHAKEN, carrier testing, spoofing, and free redress routes.

Article · 23 min read

How to Check Phone Number History for a New Business

Learn how to check phone number history in 2026 before publishing a new business number: verify public listings, test calls, compare provider remedies and decide whether to accept or replace it.

Article · 23 min read

Business Call Forwarding to Cell Phone: Caller ID and Voicemail

A 2026 test guide for business calls forwarded to staff mobiles: identify the incoming number, prevent personal voicemail pickup, verify callbacks, and compare routing options.

Sources

Every regulatory and pricing claim on this page links to the primary source it came from. Figures were checked on the date shown at the top of the page; rules and prices change, so verify before relying on one.

NANPA, NPA Database CSV, file dated 14 October 2026; US geographic codes, location, dates, overlay complexes, dialing plan and time zone. Retrieved 14 Oct 2026
https://reports.nanpa.com/public/npa_report.csv