Omaha, Nebraska
Area code 531
Where Is Area Code 531?
Area code 531 serves eastern Nebraska, centered on the Omaha metro area. It covers the same numbering plan area as area code 402. This region includes Omaha, Bellevue, Fremont, Norfolk, Columbus, and Papillion.
Area code 531 serves communities in Douglas County, Sarpy County, Dodge County, Madison County, and Platte County, among others in eastern Nebraska. Omaha is the largest city in the area code. Bellevue and Papillion are major suburbs south of Omaha.
This area sits along the Missouri River at Nebraska’s eastern border. Notable landmarks in the 531 area include downtown Omaha, Eppley Airfield, Henry Doorly Zoo and Aquarium, and the University of Nebraska Omaha. The region also includes parts of the Omaha-Council Bluffs metropolitan area on the Nebraska side.
History of Area Code 531
Area code 531 began service on March 26, 2011. The North American Numbering Plan Administrator added it as an overlay for area code 402. An overlay means both area codes serve the same geographic area.
Area code 402 is one of the original area codes created in 1947, and it once covered all of Nebraska. In 1954, Nebraska split, and area code 308 took the western part of the state while 402 remained in eastern Nebraska. The 531 overlay was added after continued growth in eastern Nebraska increased demand for new phone numbers.
Key Facts About Area Code 531
- Area code 531 is in Nebraska, and Omaha is the largest city in its service area.
- Area code 531 is an overlay of area code 402 in eastern Nebraska.
- Area code 531 officially entered service on March 26, 2011.
- The 531 and 402 area codes use Central Time.
- Area code 531 serves the Omaha metro area and cities such as Bellevue, Fremont, Norfolk, Columbus, and Papillion.
- Area code 402 was created in 1947 as one of the original North American area codes, and 531 later overlaid part of that same region.
- Major institutions in the 531 area include Creighton University, the University of Nebraska Omaha, and Offutt Air Force Base near Bellevue.
- Notable landmarks in the 531 area include Eppley Airfield and Omaha’s Henry Doorly Zoo and Aquarium.
Frequently Asked Questions
What state is area code 531 in?
Area code 531 is in Nebraska.
What major cities use area code 531?
Major cities that use area code 531 include Omaha, Bellevue, Fremont, Norfolk, Columbus, and Papillion.
Is area code 531 a toll-free number?
No. Area code 531 is a geographic area code for eastern Nebraska.
Last updated: March 2026