Area code 402 serves eastern Nebraska, including Omaha, Lincoln, and Norfolk. One of the original area codes introduced in 1947, 402 initially covered the entire state before being split by area code 308. Due to growth, it was overlaid with 531 in 2011, making ten-digit dialing mandatory. Omaha and Lincoln are the state's largest cities, with thriving sectors in finance, education, insurance, and technology. Area code 402 represents the cultural, economic, and political heart of Nebraska, combining urban innovation with Midwestern hospitality and tradition.