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Where Is 505 Area Code?

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Database Updated: August 9, 2025
New Mexico Phone Number Lookups
Where Is 505 Area Code?

Where is Area Code 505?

Area code 505 is located in the state of New Mexico. It serves a variety of regions, counties, and major cities, providing essential telecommunication services to residents and businesses. The area code covers:

  • Albuquerque
  • Santa Fe
  • Farmington
  • Gallup
  • Los Alamos
  • Rio Rancho

For more information about the regions covered by area code 505, visit the New Mexico Public Regulation Commission.

New Mexico Public Regulation Commission
P.O. Box 1269, Santa Fe, NM 87504
Phone: 1-(888)-427-5772

What time zone is 505 area code in the USA?

The 505 area code is situated in the Mountain Time Zone (MT). This time zone observes daylight saving time, shifting from Mountain Standard Time (MST) to Mountain Daylight Time (MDT) during the warmer months. For accurate timekeeping, refer to the National Institute of Standards and Technology.

History of the 505 Area Code

The 505 area code was one of the original area codes established in 1947. It initially covered the entire state of New Mexico. However, due to the increasing demand for telephone numbers, a split occurred in 2007, creating area code 575 to serve the southern and eastern parts of the state. This change was necessary to accommodate the growing population and the proliferation of mobile devices. For more details on the history and administration of area codes, consult the North American Numbering Plan Administrator (NANPA).

NANPA Mailing Address
One Tower Center Boulevard
Suite 800
East Brunswick, NJ 08816

NANPA Customer Support
Tel: 1-866-623-2282
Email: support@nanpa.com
Fax: 571-363-3838

How Many People Use the 505 Area Code?

The 505 area code serves a population of over 1.3 million people. This figure represents the residents and businesses within the regions covered by the area code. For more demographic information, visit the U.S. Census Bureau.

U.S. Census Bureau
4600 Silver Hill Road, Washington, DC 20233
Tel: 301-763-INFO (4636) or 800-923-8282

Is the 505 Area Code Toll-Free?

The 505 area code is a geographic area code, not a toll-free number. It is designated for specific regions within New Mexico and is used for local calls within its coverage area. Toll-free numbers in the United States typically begin with prefixes such as 800, 888, 877, 866, 855, 844, and 833. For more information on toll-free numbers and their operation, refer to the Federal Communications Commission.

Federal Communications Commission
45 L Street NE, Washington, DC 20554
Tel: 1-888-CALL FCC (225-5322)
https://www.fcc.gov/

 

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