Where is the 531 area code?

Area code 531 covers Omaha in Nebraska, on Central Time.

What time zone is area code 531 in?

Numbers in the 531 area code sit in Central Time.

Is 531 a toll-free or scam area code?

No. 531 is a geographic North American Numbering Plan area code assigned to Nebraska. Toll-free numbers use 800, 833, 844, 855, 866, 877 and 888. A call from 531 can still be spoofed, so treat unexpected calls with the usual caution.

Area code lookup

531 area code

Where the 531 area code is, which cities and counties it serves, the local time zone and the overlay codes dialled alongside it.

State: NE
Cities covered: 1
Counties: 1
Time zone: Central Time

Quick answer

Area code 531 serves Omaha in Nebraska. It sits in Central Time and covers 1 county and about 12 ZIP codes across the metros we track. Numbers there are also dialled as 402, 712.

Cities in the 531 area code

Each city links to its full local profile: sales tax, housing, income and ZIP codes.

City	County	Time zone	ZIP codes
Omaha, NE	Douglas County	CST/CDT	12

Related area codes

Codes that share or border the same calling area.

531 area code FAQ

The questions people ask about this code.

Where is area code 531?

531 is a geographic area code in Nebraska, covering Omaha.

What time is it in the 531 area code?

531 observes Central Time (CST/CDT).

Is 531 a scam area code?

No — it is a normal geographic code, not a toll-free or premium-rate prefix. Caller ID can be spoofed on any code, so verify unexpected callers before sharing information.

Sources & transparency

North American Numbering Plan Administrator (NANPA) area code assignments — area code to geography mapping and overlay relationships
US Census Bureau, American Community Survey 2019-2023 5-year estimates — city, county and ZIP code geography

Last reviewed August 2026. Figures are published for reference and can change; verify with the source agency before filing or contracting. How we build and check this data.