Area codes in Norman, Oklahoma
Norman, Oklahoma uses 2 area codes — 405 and 572. The main Norman area code is 405.
Area codes serving Norman
Phone numbers in Norman are written as ten digits — for example (405) 555-0190 — and fall in the Central Time zone.
How Norman came to have 2 area codes
The original Norman area code is 405, in service since 1947. As the area ran low on available numbers, an overlay code was added over the same region for new phone lines: 572 (2021). Existing numbers kept their original code — an overlay never forces anyone to change their number — which is why Norman now uses all 2 codes and every local call is dialed with ten digits.
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Nearby cities
- Oklahoma City area codes
- Edmond area codes
- Stillwater area codes
- Lawton area codes
- Tulsa area codes
- Wichita Falls area codes
- Denton area codes
- Frisco area codes
Frequently asked questions
What is the area code for Norman?
The main area code for Norman, Oklahoma is 405. Norman is now served by 2 area codes in total: 405, 572.
How many area codes does Norman have?
Norman has 2 area codes: 405, 572.
Why does Norman have more than one area code?
As Norman used up the numbers available in its original area code (405, in service since 1947), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.
How do you dial a Norman number?
Dial all 10 digits — the area code (405 or 572) 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.