West region · Mountain Time
New Mexico Area Codes
All 2 area codes serving New Mexico, the cities each one covers, and which are overlays. New Mexico is served by 2 area codes in the Mountain Time zone.
Last updated October 3, 2026
Full list
Every New Mexico area code
New Mexico is served by 2 area codes in the Mountain Time zone. It is a single-code state, so seven-digit local dialing may still work in many places.
| Code | Area served | Type | In service |
|---|---|---|---|
| 505 | Northwestern and central New Mexico, including Albuquerque, Santa Fe and Farmington | Geographic | Since 1947 |
| 575 | Southern, eastern and northern rural New Mexico outside the Albuquerque-Santa Fe area | Geographic | Since 2007 |
Area codes and dialing in New Mexico
New Mexico's 2 area codes mix older geographic codes with newer overlays. The busiest metros — around Albuquerque, Las Cruces — carry the most numbers and rely on overlays, which is why dialing rules vary by area. Quieter parts of the state may still use a single code. The oldest code in New Mexico is 505 (Albuquerque), one of the original 1947 area codes.
Whenever a New Mexico region runs low on numbers, a new overlay is added on top rather than splitting the map, so existing customers keep their numbers. See 10-digit dialing for what that means in practice, or the newest area codes for upcoming changes.
New Mexico city area code pages
Look up the area codes for a specific New Mexico city: Albuquerque · Santa Fe · Las Cruces.
Browse New Mexico another way
Explore by West region, by time zone, or jump to the city index. You can also see the complete numeric list of every US area code.
Quick answers
New Mexico area code FAQ
How many area codes does New Mexico have?
New Mexico currently has 2 area codes: 505, 575.
What is the main area code for New Mexico?
New Mexico has no single main code. Its original 1947 area code was 505; today the main cities are served by 505 (Albuquerque), 575 (Las Cruces).
Does New Mexico require 10-digit dialing?
Much of the state still permits 7-digit local calls. Dialing all 10 digits always works, so it is the safe habit.