Area codes in Southfield, Michigan
Southfield, Michigan uses 2 area codes — 248 and 947. The main Southfield area code is 248.
Area codes serving Southfield
Phone numbers in Southfield are written as ten digits — for example (248) 555-0190 — and fall in the Eastern Time zone.
How Southfield came to have 2 area codes
The original Southfield area code is 248, in service since 1997. As the area ran low on available numbers, an overlay code was added over the same region for new phone lines: 947 (2002). Existing numbers kept their original code — an overlay never forces anyone to change their number — which is why Southfield now uses all 2 codes and every local call is dialed with ten digits.
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Frequently asked questions
What is the area code for Southfield?
The main area code for Southfield, Michigan is 248. Southfield is now served by 2 area codes in total: 248, 947.
How many area codes does Southfield have?
Southfield has 2 area codes: 248, 947.
Why does Southfield have more than one area code?
As Southfield used up the numbers available in its original area code (248, in service since 1997), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.
How do you dial a Southfield number?
Dial all 10 digits — the area code (248 or 947) followed by the 7-digit local number. From abroad, dial +1, then the area code and number.
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.