What is an area code?

An area code is the three-digit prefix at the start of a North American phone number that identifies a specific geographic region — a city, metro area, or part of a state. In the number (212) 555-0100, the 212 is the area code for Manhattan in New York City.

How do I find the area code for a city?

Use the area code directory on this page: type a city, state, or three-digit code and the matching regions appear instantly. You can also browse the popular US area codes and the lookup-by-region sections below.

What is the difference between an area code and a country code?

A country code routes a call to a nation (for example +1 for the United States), while an area code routes it to a region within that nation. You dial the country code first when calling from abroad, then the area code, then the local number.

Can two cities share the same area code?

Yes. A single area code can cover several nearby cities or an entire metro region. As demand for numbers grows, regions are often split or given an additional overlay area code that serves the same geography.

What are toll-free area codes?

Toll-free numbers use special prefixes — 800, 833, 844, 855, 866, 877, and 888 — instead of a geographic area code. The business that owns the number pays for incoming calls, so they are free for the caller. They are popular for customer support and sales lines.

What state is area code 313 in?

Area code 313 is located in Michigan (MI), in the Midwest region of the United States. The capital of Michigan is Lansing.

What time zone is area code 313 in?

Area code 313 operates in the Eastern Time (ET). If you are calling from a different time zone, make sure to account for the time difference before reaching out during business hours.

How can I get a 313 area code phone number for my business?

You can get a 313 local phone number through letsdial in minutes. Choose the 313 area code, select a local number, and route calls to your team from one cloud dashboard — no hardware required.

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Midwest

Area Code 313

Detroit, MI — Michigan

Area code 313 serves Detroit and Michigan. Get a local 313 number to build instant presence in this market.

Assigned in 1947 as Michigan's original area code, 313 once covered much of the state before splits left it to Detroit. It is the Motor City's prestige code.

Get a 313 number ← All area codes

+1 (313) XXX-XXXX

Detroit, MI

LIVE

Connecting…

ONHD Voice

18msLatency

99%Quality

End

State

Michigan (MI)

Capital: Lansing

Time Zone

Eastern Time (ET)

Region

Midwest

US Census region

Code Type

Geographic

Original area code

Cities covered

Where does area code 313 cover?

Area code 313 serves communities across Michigan. Cities below represent the primary coverage area per the NANP.

Detroit
Hamtramck
Dearborn
Highland Park
Wayne County

About Michigan

Michigan phone number landscape

Michigan's 12 area codes reflect Detroit's automotive heritage, Grand Rapids' growing furniture and healthcare sectors, and Ann Arbor's tech and University of Michigan ecosystem.

Number format

+1(313)XXX-XXXX

When dialing from outside the US, prefix with +1. Within the US, dial all 10 digits including the area code.

Get a 313 number for your business

History of Area Code 313

Assigned in 1947 as Michigan's original area code, 313 once covered much of the state before splits left it to Detroit. It is the Motor City's prestige code.

For your business

Why get a 313 area code number?

A local 313 number gives your business a genuine connection to the Michigan market — without the overhead of a physical location.

Local Market Access

Reach Detroit customers and businesses with a familiar local number. Dearborn is the global headquarters of Ford Motor Company, anchoring the automotive economy. Auto-suppliers and engineering firms prize a 313 number for this Motor City credibility.

Professional Credibility

A 313 number anchors your business in Detroit and Michigan, giving clients and partners a recognizable local point of contact that builds immediate professional trust.

Higher Answer Rates

Local area codes are far less likely to be blocked. A 313 number keeps your outreach out of the spam folder.

Flexible Operations

Start with one 313 number and add more as you grow — all managed from a single letsdial dashboard.

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How to obtain a 313 phone number.

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Local advantage

Benefits of a local Michigan number

A 313 area code tells Michigan customers you're local and easy to reach.

Local 313 numbers get answered more often than toll-free or out-of-state calls.
Build local trust and brand recognition without a physical office.
Keep your personal number private with a dedicated 313 business line.

Why local numbers win

+28%Higher answer rate vs. toll-free

+22%More callbacks from local numbers

3.0×Faster trust building with local code

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Area code 313 FAQs

Frequently asked about 313

Area code 313 covers Detroit, Hamtramck, Dearborn, Highland Park, Wayne County in Michigan. It is the primary area code for this region.

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Get a local 313 number for your business in minutes. No contracts, no hardware — just a trusted local presence in Michigan from day one.

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