The 947 area code is an overlay serving Oakland County, Michigan, layered over the 248 code across the affluent suburbs north of Detroit. Introduced in 2002 to supply new phone numbers, 947 covers the exact same territory as 248. If a 947 number has appeared on your caller ID, this guide explains where it comes from, how to dial it, and how to stay safe from spoofed calls.
Quick Summary: Area Code 947 at a Glance
| Detail | Information |
|---|---|
| Area Code | 947 |
| State | Michigan (MI) |
| Major Cities | Troy, Southfield, Pontiac, Farmington Hills |
| Time Zone | Eastern Time (ET) |
| Country Code | +1 (USA) |
| Overlay Codes | 248 (co-located) |
Geographic Coverage & Major Cities
Area code 947 covers Oakland County, Michigan, north of Detroit. Because it is an overlay, it shares the identical footprint of the 248 area code rather than covering a separate zone.
- Troy & Southfield – major business and office centers
- Pontiac – the county seat
- Farmington Hills & Novi – large western Oakland suburbs
- Royal Oak & Rochester Hills – established communities
As the newer code over Oakland County, 947 numbers are common among lines set up after the original 248 numbers grew scarce.
A Brief History of Area Code 947
Area code 947 was activated in 2002 as an all-services overlay on the 248 region. The 248 code itself split from 810 in 1997. An overlay adds a second area code across the same geographic area, so existing 248 customers kept their numbers while new lines could be assigned either code, under mandatory 10-digit dialing.
Time Zone & Best Time to Call
Numbers in the 947 area code use Eastern Time (ET). The region observes Daylight Saving Time, shifting from EST (UTC-5) to EDT (UTC-4) between March and November each year.
How to Dial Phone Numbers in Area Code 947
Because 947 shares its region under an overlay, the area requires 10-digit dialing on every call.
Calling within the United States or Canada
- 10-digit dialing: Include the area code – 947-XXX-XXXX.
- 11-digit dialing: You can also dial 1-947-XXX-XXXX; the leading 1 is the NANP country code.
Calling from outside the United States
- Format: [exit code] + 1 + 947 + XXX + XXXX
- From the UK, Europe, or most of Asia/Africa: 00 1 947 XXX XXXX
- From any mobile phone worldwide: +1 947 XXX XXXX
Is Area Code 947 a Scam? Safety & Protection Tips
Area code 947 is a legitimate Michigan area code – a call from it is not fraudulent by default. However, scammers frequently spoof local codes like 947, faking the caller ID so their number appears to come from a trusted local line. Neighbor spoofing, which mimics the first six digits of your own number, is especially common.
Common scam tactics linked to this region
| Scam type | What to watch for |
|---|---|
| Government impersonation | Callers posing as the IRS or SSA threatening arrest or fines |
| Bank & card fraud alerts | Claims of suspicious activity seeking your account details |
| Utility shut-off threats | Fake DTE Energy disconnection demands |
| Package delivery scams | Fake texts or calls about a failed delivery with a bad link |
How to report, block, and look up 947 callers
- Never share personal or financial details with an unexpected caller, however urgent they sound.
- Block the number using your phone’s built-in call-blocking feature or a reputable call-screening app.
- Look up the number with a trusted reverse phone lookup before returning any call.
- Report it to the FTC at reportfraud.ftc.gov and register at DoNotCall.gov.
Nearby & Related Area Codes in Michigan
Area code 947 shares and borders several other Michigan codes:
- 248 – the original Oakland County code that 947 overlays (see our 248 area code guide)
- 313 – the city of Detroit to the south (see our 313 area code guide)
- 586 – Macomb County to the east (see our 586 area code guide)
- 734 – western Wayne County and Ann Arbor to the southwest (see our 734 area code guide)
Explore more codes across the state on our Michigan area codes hub, or browse every prefix in our US area codes directory.
↑ See the complete list of All US Area Codes by State – every area code across all 50 states in one directory.
Explore Neighboring States
Researching area codes just across the state line? Start with these codes in the states that border Michigan:
Frequently Asked Questions About Area Code 947
Where is the 947 area code located?
Area code 947 covers Oakland County, Michigan, including Troy, Southfield, and Pontiac, as an overlay of the 248 code. It operates on Eastern Time.
What is the difference between 947 and 248?
There is no geographic difference. 947 overlays the exact same Oakland County territory as 248; it was added in 2002 simply to supply more phone numbers.
Is 947 a landline or cell phone area code?
Both. Area code 947 serves landlines, mobile phones, and VoIP numbers throughout Oakland County.
Should I answer a call from an unknown 947 number?
If you are not expecting the call, let it go to voicemail. Legitimate callers leave a message, while spoofed or robocall numbers usually will not. Verify any unfamiliar number with a reverse lookup before calling back.
Related 947 Guides
- Is a 947 call safe? Read Is area code 947 a scam? Spam & safety guide.
- Local coverage: see the Troy area code guide.
- Worried about spam or robocalls? Browse our Scam Alerts directory.