Where Is 520 Area Code?

Where is Area Code 520?

Area Code 520 encompasses a broad swath of southern Arizona, primarily serving residents and businesses in Pima, Santa Cruz, Cochise, parts of Pinal, and Graham Counties. Individuals or organizations operating within these parts of the state often rely on 520 for landline and mobile phone services. To provide official assistance, multiple government agencies within this region collaborate to handle communications regulations, infrastructure planning, and consumer protection.

Major municipalities covered by this area code include:

• Tucson
• Casa Grande
• Sierra Vista
• Nogales
• Douglas
• Bisbee
• Green Valley

Residents may visit the following government offices in person if they require more information about local communication services or regulatory guidance:

• Pima County Government Building, 130 W Congress St, Tucson, AZ 85701
• Cochise County Office, 1415 Melody Ln, Bisbee, AZ 85603

A concise overview of some prominent cities in the 520 region is illustrated below:

For further details on telephone regulations in southern Arizona, interested parties can refer to the official Arizona Corporation Commission website.

What Time Zone Is 520 Area Code in the USA?

All telephone numbers utilizing the 520 area code are situated in the Mountain Standard Time (MST) zone. Unlike some other states, most of Arizona does not observe Daylight Saving Time (DST). The 520 area retains the same local time throughout the year, except for the Navajo Nation region in Northeastern Arizona, which does recognize DST.
• Standard time remains consistent for 520 area code users.
• DST adjustments do not apply in the majority of this region.

Information regarding official timekeeping and any regulatory exceptions can be found via official FCC guidelines.

History of the 520 Area Code

The 520 area code was created in 1995 as a result of the increasing need for telephone numbers throughout Arizona. Initially, Arizona’s primary area code was 602, but significant population growth and an expanding telecommunications market led to the establishment of new area codes statewide. The split introduced 520 to serve southern Arizona, particularly the regions beyond the Phoenix metro area.

Subsequent changes were required due to continued demand for telephone numbers:

• Before 1999, 520 alone covered most of Arizona outside Greater Phoenix.
• Population increases prompted further divisions, such as the introduction of area code 928, which extracted coverage from 520 in Northern Arizona.
• Ongoing technological developments and mobile device adoption have spurred official discussions at the official Arizona government site about potential overlays or relief plans in the future.

If members of the public or business owners need archived documentation or official proceedings about these area code decisions, they can consult public records available through the population data from the United States Census Bureau and coordinate with relevant local entities.

How Many People Use the 520 Area Code?

The 520 area code serves hundreds of thousands of residential and commercial telephone users, extending across multiple counties and municipalities. This segment of the state has seen steady growth, particularly in Pima County, which has Tucson as its main population hub. According to recent population trends referenced at the population data from the United States Census Bureau, Tucson alone hosts over half a million residents, with thousands more living in unincorporated areas throughout southern Arizona.

Key points regarding usage:

• A large portion of rural and urban subscribers rely on local providers under regulations set by state authorities.
• Demand for cellular and business lines continues to grow.
• Public agencies, such as the Arizona Department of Transportation, 206 S 17th Ave, Phoenix, AZ 85007, rely on 520-based lines for branch offices located in southern Arizona.

Is the 520 Area Code Toll-Free?

The 520 area code is not a toll-free area code. It is designated as a standard geographic area code, meaning calls placed to or from this region may incur local or long-distance charges depending on the caller’s phone plan. Arizona state regulations typically require telecommunication providers to disclose any charge variations to customers. Further details on these rules, along with recent phone service guidelines, are available for public review at the official FCC guidelines.

Special terms and policies:

• Calls to 520 from outside southern Arizona may be subject to standard long-distance fees.
• Businesses and government agencies in the region provide local helpline numbers to reduce in-state calling costs.
• If you have questions regarding official protocols, you may contact the Arizona Corporation Commission in person at 1200 W Washington St, Phoenix, AZ 85007 or consult their official Arizona Corporation Commission website.

Individuals seeking to establish new phone numbers in the 520 region or to relocate existing lines within this territory are urged to consult authorized service providers for comprehensive information on compliance obligations, rates, and area code overlays.