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US area code · Michigan

Area code 313

Where the 313 area code is, its overlay and how to dial a +1 313 number from anywhere.

CoversDetroit, MichiganTime zoneEastern (ET)TypeOverlay
Quick answer

The 313 area code is in Detroit, Michigan, United States (Eastern (ET)). To call from abroad: +1 313 555-0123. It is an overlay, so all 10 digits are dialled.

StateMichigan
Main areaDetroit
Time zoneEastern (ET)
TypeOverlay
10-digit dialingRequired
In service since01-Jan-1947

The 313 area code is a geographic North American Numbering Plan (NANP) code covering Detroit, Michigan. It has been in service since 01-Jan-1947 and sits in the Eastern (ET) time zone.

Overlay 313 shares its region

Several area codes cover the same geographic area, so two neighbours can have different codes. Because of the overlay, you must dial all 10 digits (area code + number) even for local calls.

313679

How to dial a 313 number

From abroad+1 313 555-0123
Within the US / Canada1 313 555-0123
Locally (same area)313 555-0123

Cities in the 313 area code

A 313 number is usually in one of these places in Michigan — 1 county.

Allen Park WayneDearborn WayneDearborn Heights WayneDetroit WayneHamtramck WayneInkster WayneLincoln Park WayneRedford WayneTaylor Wayne

Other Michigan area codes

231248269517586616679734810906947989

Frequently asked questions

Where is the 313 area code?

The 313 area code is in Detroit, Michigan, United States (Eastern (ET)).

Is 313 an overlay area code?

Yes. 313 overlays the same region as 679, so callers dial all 10 digits.

Do I have to dial 10 digits for 313?

Yes — dial the area code plus the seven-digit number.

How do I call a 313 number from another country?

Dial your exit code (or +), then 1, then 313, then the number: +1 313 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 313 number does not pinpoint a street or ZIP code.

Missed a call from +1 313?

In the 30 days to September 24, 2026, 514 unwanted calls showing a 313 number were reported to the US Federal Trade Commission, 62% of them recorded messages or robocalls. That puts 313 at #193 of 670 area codes reported.

Other214
Reducing your debt (credit cards, mortgage, student loans)135
Calls pretending to be government, businesses, or family and friends67
Dropped call or no message22
Before you call back
  • If you do not know anyone in Michigan, do not call back: a genuine caller will leave a message or send a text.
  • Scammers fake the number shown on caller ID, so a 313 number can hide a caller anywhere in the world.
  • Never give a code received by text or a bank detail to an unknown caller. In the US, calls can be reported at reportfraud.ftc.gov.

Who issues +1 313 numbers

Phone companies hold blocks of numbers in each area code. The main holders in 313:

Michigan Bell Tel Co 244Omnipoint Communications Midwest Operations, LLC 141New Cingular Wireless PCS, LLC 95Cellco Partnership Dba Verizon Wireless 54Bandwidth.Com CLEC, LLC 28Onvoy, Llcv 25

About 19.1% of the 782 prefixes in use belong to mobile carriers: a 313 number is often a cell phone, and it may have moved to another carrier since.

Sources: FTC Do Not Call reported calls (numbers as reported by consumers, not verified), NANPA central office code assignments.

All US area codes United States +1 Map of area code 313 — cities & rate centres