Area codes in Omaha, Nebraska
Omaha, Nebraska uses 2 area codes — 402 and 531. The main Omaha area code is 402.
Area codes serving Omaha
Phone numbers in Omaha are written as ten digits — for example (402) 555-0190 — and fall in the Central Time zone.
How Omaha came to have 2 area codes
The original Omaha area code is 402, 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: 531 (2011). Existing numbers kept their original code — an overlay never forces anyone to change their number — which is why Omaha now uses all 2 codes and every local call is dialed with ten digits.
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Nearby cities
- Council Bluffs area codes
- Lincoln area codes
- Sioux City area codes
- Des Moines area codes
- Ames area codes
- Manhattan area codes
- Topeka area codes
- Sioux Falls area codes
Frequently asked questions
What is the area code for Omaha?
The main area code for Omaha, Nebraska is 402. Omaha is now served by 2 area codes in total: 402, 531.
How many area codes does Omaha have?
Omaha has 2 area codes: 402, 531.
Why does Omaha have more than one area code?
As Omaha used up the numbers available in its original area code (402, 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 Omaha number?
Dial all 10 digits — the area code (402 or 531) 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.