The area code 928 is located in Flagstaff, Arizona.
Area code 928 serves Flagstaff and a wide stretch of northern and western Arizona, reaching from the high country to the Colorado River. Centered in Flagstaff, a gateway to the Grand Canyon National Park, it also covers communities along historic Route 66 and the I-17/I-40 junction. The code was introduced in 2001 after a split from 520, supporting growth across the region. Flagstaff’s ties to science and the outdoors stand out—home to Northern Arizona University and Lowell Observatory, where Pluto was discovered in 1930.
You’ll find 928 phone numbers across many major cities and destinations, including:
From red rock country to pine forests, area code 928 links diverse landscapes and communities. Much of the area stays on Mountain Standard Time year‑round, while parts of the Navajo Nation within 928 observe daylight saving time. Route 66 history is alive in downtown Flagstaff, and the San Francisco Peaks overlook the city at nearly 12,600 feet. With reliable coverage across national parks, college campuses, and border towns, 928 is the everyday code for northern Arizona life.
“Area code 928 was created in 2001 from 520 to serve northern and western Arizona.” (North American Numbering Plan Administration)