947 area code
Ortonville area, Eastern Time.Area code 947 covers Ortonville, Clarkston, Southfield and 17 more places in Michigan, on Eastern Time. 248 covers the same area.
Right now in Ortonville
Eastern Time (EST, UTC-5; EDT, UTC-4 in summer)
Calling hours: Every day, 9 AM to 9 PM (Michigan law)
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Where 947 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 947 has 20. Each one's share is how many 947 numbers start there. Its biggest metro area is Detroit-Warren-Dearborn, MI.
- Ortonville19%
- Clarkston16%
- Southfield9%
- Farmington9%
- Birmingham8%
- Pontiac7%
- Royal Oak5%
- Milford-White Lake3%
- Troy3%
- Northville3%
- Auburn Heights3%
- Rochester2%
Also: West Bloomfield, Holly, Commerce, Drayton Plains, Walled Lake, South Lyon, Oxford, Lake Orion
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call a 947 number?
Sales calls to homes and cell phones have legal hours, set by Michigan law. Hold every 947 number to them, since you can't tell a work line from a personal cell.
What applies to 947Every day, 9 AM to 9 PM
- Federal (TCPA and FTC rule)Every day, 8 AM to 9 PMCalls to residential and mobile numbers. Most calls to businesses are exempt from the FTC's rule.47 CFR 64.1200(c)(1); 16 CFR 310.4(c) (opens in a new tab)
- Michigan lawEvery day, 9 AM to 9 PMIn a harassment statute that needs intent to annoy.MCL 750.540e(1)(f) (opens in a new tab)
Local time comes from the area code, not from where the person is today. Mobiles keep their number when they move. Calling hours here are a guide, not legal advice. Every state's calling hours, with sources
947 and 248
947 went into service on September 7, 2002. 947 and 248 cover the same area, so new numbers can get either code and neighbors can have different area codes. 947 holds 21% of the area's exchanges; 248 holds the most. Local calls take all 10 digits.
- 1997248 overlay
- 2002947 starts
Source: NANPA area code database
Calling a list of 947 numbers?
Paste it into the free phone number validator. It checks every number, finds each one's time zone and sorts the list by who you can call right now.
947 area code FAQ
What area code is 947?
947 is a Michigan area code for Ortonville, Clarkston, Southfield, Farmington and 16 more places.
What time zone is the 947 area code in?
Eastern Time (EST, UTC-5; EDT, UTC-4 in summer).
Is 248 the same as 947?
Same area, different code. 947 and 248 cover the same area (an overlay), so new numbers can get any of them and local calls take all 10 digits.
What are the calling hours for 947 numbers?
Every day, 9 AM to 9 PM, local time, under Michigan law.
When did the 947 area code start?
On September 7, 2002.
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