Los Alamos, New Mexico
Mountain Time Zone (UTC-7) · NM · —
About Area Codes in Los Alamos, New Mexico
Los Alamos, New Mexico is served by area code 505, which was one of the original area codes established in 1947 under the North American Numbering Plan. The city falls within the Mountain time zone (UTC-7). All calls to and from Los Alamos use the 505 area code prefix for local and long-distance dialing.
Other cities in area code 505
Frequently Asked Questions
What area code is Los Alamos, New Mexico?
Los Alamos, New Mexico uses area code 505.
What time zone is Los Alamos in?
Los Alamos is in the Mountain time zone (UTC-7).
Do I need to dial 10 digits when calling Los Alamos?
Standard 7-digit dialing is used for local calls within Los Alamos. However, 10-digit dialing is always accepted and required for long-distance calls.
When was area code 505 created?
Area code 505 is one of the original 86 area codes established in 1947 as part of the North American Numbering Plan (NANP).
What cities share area code 505 with Los Alamos?
Other cities sharing area code 505 with Los Alamos include Albuquerque, Espanola, Farmington, Gallup, Las Vegas, among others.
Los Alamos, NM · Mountain Time Zone