Where is the 679 area code?

Area code 679 covers Michigan, on Eastern Time.

What time zone is area code 679 in?

Numbers in the 679 area code sit in Eastern Time and Central Time.

Is 679 a toll-free or scam area code?

No. 679 is a geographic North American Numbering Plan area code assigned to Michigan. Toll-free numbers use 800, 833, 844, 855, 866, 877 and 888. A call from 679 can still be spoofed, so treat unexpected calls with the usual caution.

Area code lookup

679 area code

Where the 679 area code is, which cities and counties it serves, the local time zone and the overlay codes dialled alongside it.

State: MI
Codes in state: 13
Overlays & neighbours: 12
Time zone: Eastern Time, Central Time

Quick answer

Area code 679 is a geographic area code assigned to Michigan under the North American Numbering Plan. Michigan observes Eastern Time and Central Time, and the state also holds 12 other area codes: 231, 248, 269, 313, 517, 586, 616, 734, 810, 906, 947, 989.

Largest cities in Michigan

The largest places in Michigan. Each links to its full local profile: population, income, housing and sales tax.

City	Population
Detroit city	636,644
Grand Rapids city	197,768
Warren city	138,128
Sterling Heights city	133,473
Ann Arbor city	121,179
Lansing city	112,546
Dearborn city	107,846
Livonia city	94,058
Troy city	87,307
Westland city	84,155
Farmington Hills city	83,316
Flint city	80,835

All Michigan cities All Michigan ZIP codes Michigan sales tax

Related area codes

Codes that share or border the same calling area.

679 area code FAQ

The questions people ask about this code.

Where is area code 679?

679 is a geographic area code in Michigan.

What time is it in the 679 area code?

679 observes Eastern Time and Central Time.

Is 679 a scam area code?

No — it is a normal geographic code, not a toll-free or premium-rate prefix. Caller ID can be spoofed on any code, so verify unexpected callers before sharing information.

Sources & transparency

North American Numbering Plan Administrator (NANPA) area code assignments — area code to geography mapping and overlay relationships
US Census Bureau, American Community Survey 2019-2023 5-year estimates — city, county and ZIP code geography

Last reviewed August 2026. Figures are published for reference and can change; verify with the source agency before filing or contracting. How we build and check this data.