Area Code 679

Michigan

Area code 679 serves Michigan, primarily Detroit, in the Eastern Time (ET) time zone. It is an overlay area code sharing territory with area code 313.

Overlay Area Code

This area code is part of an overlay region, meaning the same geographic area is served by multiple area codes. Overlay codes were introduced to meet growing demand for phone numbers without requiring existing customers to change their numbers.

This area code shares its geographic region with: area code 313 (Detroit).

In service since: 07-Nov-2025

Learn more about overlay and split area codes →

Demographics & Economics

Total Population: 1,080,643
Population Density: 2,851 people/sq mi
above U.S. average (U.S.: 93 people/sq mi)
Median Household Income: $59,521
below U.S. median (U.S.: $75,144)
Poverty Rate: 19.8%
above U.S. average (U.S.: 11.5%)
Unemployment Rate: 8.6%
above U.S. average (U.S.: 3.6%)
Education Attainment: Bachelor's Degree+
26.9%
below U.S. average (U.S.: 33.7%)
High School or Lower
33.4%

Statistics are population-weighted aggregations from Census ACS 5-year estimates. Population figures are approximate — see Sources & Methodology for details on how area code populations are derived.

See how this area code compares to all US area codes in the Statistics dashboard.

Time Zone

Eastern Time (ET)

NANPA Relief Status

According to the latest NANPA analysis (July 2026), this area code is not currently listed as exhausting within the next 36 months. No relief planning is in progress for this NPA.

Source: NANPA NPA Relief Planning Reports · See all relief planning statuses

Current Time

Eastern Time (ET)

Prefix Utilization

Geographic Coverage

State

Major Cities

Detroit
Ann Arbor
Dearborn
Livonia
Westland
Taylor
Dearborn Heights
Lincoln Park
Southgate
Allen Park
Hamtramck
Inkster
Romulus
Wyandotte
Monroe
Ypsilanti
Trenton
Wayne
Grosse Pointe Woods
Harper Woods
Woodhaven
Melvindale
Riverview
Grosse Pointe Park

and 35 more cities

Area Code 679 geographic coverage map (light mode)

Demographics

The estimated population served by area code 679 is approximately 1,080,643. The population density is 2,851 people per square mile, which is higher than the national average of 93. The median household income is $59,521, which is lower than the national median of $75,144. Approximately 26.9% of adults hold a bachelor's degree or higher, compared to the national rate of 33.7%. This rate is lower than the national average. The poverty rate stands at 19.8%, which is higher than the national rate of 11.5%.

History

Area code 679 serves as an overlay for the same territory as area code 313. It was introduced in 2025 to provide additional phone number capacity for the region. It shares its territory with area code area code 313.