Area Codes

Area Code 947: Troy, Michigan Coverage & History

September 22, 2026 · by David · 4 min read

Area code 947 covers Troy and surrounding areas in Michigan. It was activated in 2002 as an overlay of area code 248. For the full picture, see all Michigan area codes.

Quick Facts: Area Code 947
State Michigan
Primary city Troy
Cities also served Troy, Southfield, Farmington Hills, Rochester Hills, Pontiac, Royal Oak, Novi, Auburn Hills
Time zone Eastern (UTC-5 / UTC-4 DST)
Year established September 7, 2002
Original 1947 NPA? No
Parent code 248
Overlay codes 248
Currently in use? Yes, actively assigned
Ten-digit dialing required? Yes

Cities Served by Area Code 947

Area code 947 serves Oakland County and portions of Wayne County, southeastern Michigan (suburban Detroit), including the following cities and communities:

  • Troy
  • Southfield
  • Farmington Hills
  • Rochester Hills
  • Pontiac
  • Royal Oak
  • Novi
  • Auburn Hills

Nearby area codes covering the same broader region include: 248, 313, 586, 734, 810.

How to Get a 947 Phone Number

There are three ways to get a phone number with the 947 area code, each suited to a different need:

  1. Buy from a premium-number specialist. Companies that hold curated inventories of specific area codes can sell you a 947 number directly, often with a one-time fee and ownership transferred to you (no recurring carrier fees). This is the option for picking a specific memorable number, or for getting an area code that most carriers won’t let you request. Browse our 947 inventory.
  2. Sign up with a VoIP carrier. Voice-over-IP services (such as Google Voice, OpenPhone, Grasshopper, and many others) can typically provision a 947 number on request, especially for active overlay codes. You won’t usually get to pick the specific number, but you’ll get a working line in the area code. This is the cheapest option for anyone who doesn’t need a particular number.
  3. Port an existing 947 number. If you already have a 947 phone number with another carrier, you can transfer it (port it) to a new service provider while keeping the number. This works for landlines, cell phones, and VoIP services, though landlines outside of Michigan sometimes can’t accept inbound ports of 947 numbers due to 911 routing rules.

Looking for a 947 number? 212areacode.com offers premium 947 numbers for Troy, Michigan — choose your number, port it to any carrier in 3–5 business days, and pay a one-time fee with no monthly charges. Browse available 947 numbers →

Frequently Asked Questions

Is the 947 area code still in use?
Yes. 947 is actively assigned to new phone lines in Oakland County and portions of Wayne County, southeastern Michigan (suburban Detroit).

What is the difference between 947 and 248?
Today they share the same geographic territory in Michigan. New phone lines in the area may be assigned either code. The two codes work identically for calling, billing, and service.

What is the parent area code of 947?
Area code 947 is an overlay of 248. Both codes serve the same region of Michigan.

Can I get a 947 number if I don't live in Michigan?
Yes. Phone numbers are no longer tied to a physical address. With VoIP service or a number broker, you can hold a 947 number from anywhere in the world. The number routes to whatever device or carrier you specify.

Is 947 a scam area code?
No. 947 is a legitimate, active area code for Oakland County and portions of Wayne County, southeastern Michigan (suburban Detroit). Like any area code, scammers occasionally spoof 947 caller IDs, but the code itself is heavily used by real Michigan businesses, government offices, and residents.

What is the 947 area code?
Area code 947 is a telephone area code serving Oakland County and portions of Wayne County in southeastern Michigan. It covers cities such as Troy, Southfield, Farmington Hills, Rochester Hills, and Pontiac.

Is 947 an overlay of 248?
Yes. Area code 947 was introduced on September 7, 2002 as an all-services overlay for area code 248, meaning both codes cover the exact same geographic territory. Ten-digit dialing is required for all local calls in the region.

Why was area code 947 created?
Area code 248 was approaching exhaustion of available phone number prefixes due to population growth and rapid adoption of mobile phones and additional business lines. The Michigan Public Service Commission approved 947 as an overlay to provide additional number capacity without splitting the geographic region.

What time zone is area code 947 in?
Area code 947 is in the Eastern Time Zone (UTC-5 standard, UTC-4 during Daylight Saving Time), the same as the rest of Michigan’s Lower Peninsula.

Related Reading

Written by

David

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