928 Area Code
| State: | Arizona |
| Top City: | Yuma |
| Timezone: | MST (UTC-7) |
| Current Time: |
Where is Area Code 928 located?
Area code 928 is a telephone area code in the North American Numbering Plan for the U.S. state of Arizona. The numbering plan area comprises the northern, eastern, and western portions of the state.
The largest city served by the 928 area code is Peoria, which is located in Maricopa County. Peoria is a suburb of Phoenix and has a population of about 175,000 people. Peoria is known for its sports facilities, such as the Peoria Sports Complex, which hosts spring training for the San Diego Padres and the Seattle Mariners.
928 Area Code Time Zone
The 928 area code lies within the Mountain Standard Time (MST) zone. MST is UTC/GMT -7:00 hours, which means that it is seven hours behind Coordinated Universal Time (UTC) or Greenwich Mean Time (GMT).
History of 928 Area Code
The 928 area code was created on June 23, 2001, as a result of a split from the 520 area code. The split was due mainly to population gains in Tucson, Yuma, and Flagstaff, which increased the demand for phone numbers in those areas. The split affected about one million customers who had to change their phone numbers from 520 to 928.
Prior to October 2021, area code 928 had telephone numbers assigned for the central office code 988. However, in 2020, 988 was designated nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. To resolve this issue, area code 928 transitioned to ten-digit dialing by October 24, 2021, which means that customers have to dial the area code before the local number for all calls within and outside the area code.
The 928 area code is expected to exhaust its available phone numbers by 2025, according to the North American Numbering Plan Administrator (NANPA). To accommodate the growing demand for phone numbers, a new area code may be introduced in the future, which would require another split or overlay of the existing area code.
Top 10 Counties in Area Code 928
| County | Population |
| Yavapai | 235,099 |
| Coconino | 141,101 |
| Mohave | 210,255 |
| Navajo | 111,767 |
| Apache | 72,795 |
| Gila | 54,026 |
| Graham | 38,797 |
| La Paz | 21,108 |
| Greenlee | 9,592 |
| Santa Cruz | 46,668 |
Top 10 Cities in Area Code 928
| City | Population |
| Yuma | 98,285 |
| Flagstaff | 75,038 |
| Prescott | 44,972 |
| Lake Havasu City | 55,090 |
| Bullhead City | 40,421 |
| Kingman | 30,314 |
| Prescott Valley | 46,515 |
| Sierra Vista | 43,208 |
| Cottonwood | 12,023 |
| Sedona | 10,335 |
Top Telephone Carriers
| Landline | Wireless |
| Electric Lightwave | Verizon Wireless |
| CenturyLink | AT&T |
| Cox Communications | T-Mobile |
| Frontier Communications | Sprint |