Area Code 313 Phone Number
for Your Business
Get a local 313 number for your business in Detroit, MI. Cloud VoIP with SMS, an auto attendant (IVR), and more — starting at $30/ext/mo. No contracts.
What Is Area Code 313?
Area code 313 is a North American telephone area code serving Detroit, Michigan. It is one of the original 1947 North American area codes and operates on Eastern Time. It is part of the 313/679 overlay complex. Businesses operating in the 313 area code region use local numbers to build trust with customers, improve answer rates, and establish a professional local presence.
With Zonitel, you can get a new 313 area code number or port your existing one with guided onboarding — no hardware required. Your team can make and receive calls from any device using the Zonitel mobile app or web portal.
Area Code 313 at a Glance
- Region
- Detroit, Michigan
- In service
- One of the original 1947 North American area codes
- Time zone
- Eastern Time
- Overlay
- Shares its territory with 679; local calls use 10-digit dialing
- Telemarketing hours
- 8 a.m.–9 p.m. Eastern Time for residential numbers (TCPA, 47 CFR 64.1200(c)(1))
Why Your Business Needs a 313 Local Number
A local number tells customers you're part of the community. People in Detroit are more likely to pick up a call from a 313 number they recognize than from an unfamiliar out-of-area number.
Everything Included With Your 313 Number
Zonitel is not just a phone number — it's a complete cloud business phone system. Every plan includes:
Frequently Asked Questions About Area Code 313
What cities use area code 313?
Area code 313 serves the Detroit area of Michigan. Cities in the 313 region include Detroit, MI.
Is area code 313 an overlay?
Yes. 313 is part of the 313/679 overlay, so new numbers in this region can come from any of those area codes, and local calls require 10-digit dialing.
What time zone is area code 313 in?
Area code 313 is in Eastern Time. Telemarketing calls to residential 313 numbers are limited to 8 a.m.–9 p.m. Eastern Time under the TCPA (47 CFR 64.1200(c)(1)).
Can I get a 313 number for my business without moving there?
Yes. With Zonitel's cloud VoIP, you can get a 313 area code number regardless of where your business is physically located. This lets you establish a local presence in Detroit without a physical office.
Can I keep my existing 313 number and switch to Zonitel?
Yes. Number porting is free. Porting commonly takes 5–10 business days depending on your current carrier, and your old service stays active until the coordinated cutover.
How much does a 313 business phone number cost?
Zonitel plans start at $30/extension/month plus tax, with no setup fees and no contracts. Your 313 local number is included in the plan.
Get Your 313 Area Code Number Today
30-day free trial. No annual contract required. Guided onboarding.