# Area code 505

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Telephone area code for northwestern New Mexico

**505 area code** in NW New Mexico, after 2007.

The original 505 numbering plan area for the entire state

**Area code 505** is a telephone [area code](/source/Area_code) in the [North American Numbering Plan](/source/North_American_Numbering_Plan) (NANP) for the [U.S. state](/source/U.S._state) of [New Mexico](/source/New_Mexico). Its numbering plan area (NPA) comprises the northwestern and central portions of the state, including the [Albuquerque](/source/Albuquerque) metropolitan area, [Gallup](/source/Gallup%2C_NM), [Santa Fe](/source/Santa_Fe%2C_New_Mexico), and [Farmington](/source/Farmington%2C_New_Mexico). The area code is one of the [original North American area codes](/source/Original_North_American_area_codes) established in October 1947. Until October 7, 2007, it served the entire state.

## History

When the [American Telephone and Telegraph Company](/source/American_Telephone_and_Telegraph_Company) established the first nationwide [telephone numbering plan](/source/Telephone_numbering_plan) in 1947, the state of New Mexico was designated as a single numbering plan area and was assigned area code 505 in the group of 86 [original North American area codes](/source/Original_North_American_area_codes).

On October 7, 2007, the numbering plan area was reduced in size to the high-population centers in the northwest of the state, due to the increasing demand for telecommunication services and telephone numbers. The rest of the state was renumbered with area code 575.[1] The issue was decided in 2006 by vote of the [New Mexico Public Regulation Commission](/source/New_Mexico_Public_Regulation_Commission), with a 3–2 majority in favor of allowing the Albuquerque area to keep the old area code.[2]

The need for an additional area code for the state had been discussed since at least 2000,[3] but the PRC's initial votes for Albuquerque and Santa Fe to switch to a new area code and the rest of the state to keep the old 505 area code (including the Farmington and Gallup areas that are now part of the current 505 area code) were met with vocal opposition.[4] Amid heightening tensions between the urban and rural areas of the state, the commission eventually chose to put off the decision until 2006 after [number pooling](/source/Number_pooling) made the immediate addition of a new code unnecessary.[5]

Prior to October 2021, area code 505 had telephone numbers assigned for the [central office code](/source/Central_office_code) 988. In 2020, *988* was designated nationwide as a dialing code for the [National Suicide Prevention Lifeline](/source/National_Suicide_Prevention_Lifeline), which created a conflict for exchanges that permit [seven-digit dialing](/source/Seven-digit_dialing). This area code was therefore scheduled to transition to [ten-digit dialing](/source/Ten-digit_dialing) by October 24, 2021.[6]

## Service area

After the split for the creation of area code 575, the 505 numbering plan area comprised the following 43 rate centers.[1]

- Abiquiu

- Albuquerque

- Aztec

- Belen

- Bernalillo

- Chimayo

- Crown Point

- Dixon

- Espanola

- Estancia

- Farmington

- Fence Lake

- Gallup

- Grants

- Laguna Acoma

- Las Vegas

- Los Alamos

- Los Lunas

- Moriarty

- Mountainair

- Naschitti

- Navajo

- Newcomb

- Ojo Caliente

- Pecos

- Pena Blanca

- Pine Hill

- Pueblo Pintado

- Ramah

- Sanostee

- Santa Fe

- Shiprock

- Tijeras

- Toadlena

- Tohatchi

- Torreon

- Truchas

- Tse Bonito

- Twin Lakes

- Vanderwagon

- Velarde

- White Rock

- Zun

## See also

- [List of New Mexico area codes](/source/List_of_New_Mexico_area_codes)

- [List of North American Numbering Plan area codes](/source/List_of_North_American_Numbering_Plan_area_codes)

## References

1. ^ [***a***](#cite_ref-pl358_1-0) [***b***](#cite_ref-pl358_1-1) ["Planning Letter 358: 505 NPA; 2-way Split, Creating 575 NPA – New Mexico"](https://nationalnanpa.com/pdf/PL_358.pdf) (PDF). North American Numbering Plan Administrator. December 21, 2006. Retrieved July 30, 2013.

1. **[^](#cite_ref-2)** Amadeo, Michael (November 6, 2006). ["Metro area to keep 505 area code"](https://web.archive.org/web/20090111013240/http://www.abqtrib.com/news/2006/nov/09/metro-area-keep-505-area-code/). The Albuquerque Tribune. Archived from [the original](http://www.abqtrib.com/news/2006/nov/09/metro-area-keep-505-area-code/) on January 11, 2009. Retrieved February 15, 2023.

1. **[^](#cite_ref-3)** "2nd area code on its way to busy N.M. phone lines". Albuquerque Journal. March 16, 2000.

1. **[^](#cite_ref-4)** Rayburn, Rosalie (June 2, 2001). "Regulators Get Death Threats for Area-Code Vote". Albuquerque Journal.

1. **[^](#cite_ref-5)** Rayburn, Rosalie (July 14, 2002). "Deadline For 505 Extended". Albuquerque Journal.

1. **[^](#cite_ref-pl556_6-0)** ["Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Hotline)"](https://nationalnanpa.com/pdf/PL_556.pdf) (PDF). North American Numbering Plan Administrator. January 8, 2021. Retrieved March 9, 2021.

## External links

- ["Area Code Maps"](https://www.nanpa.com/resources/area-code-maps). [North American Numbering Plan Administrator](/source/North_American_Numbering_Plan_Administrator).

New Mexico area codes: 505, 575 North: 970 West: 928 505 East: 575 South: 575 Arizona area codes: 520, 602/480/623, 928 Colorado area codes: 303/720/983, 719, 748/970

[45°30′N 123°00′W / 45.500°N 123.000°W / 45.500; -123.000](https://geohack.toolforge.org/geohack.php?pagename=Area_code_505&params=45_30_N_123_00_W_region:US-OR_type:landmark_source:kolossus-rowiki)

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Adapted from the Wikipedia article [Area code 505](https://en.wikipedia.org/wiki/Area_code_505) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Area_code_505?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.