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Area code 406 is the telephone area code in the North American Numbering Plan for the entire U.S. state of Montana. It has been Montana's only area code since the American Telephone and Telegraph Company created a nationwide telephone numbering plan in 1947. As of 2013, there were 1.7 million lines served by 47 carriers; all but two wireline ...
Map of the United States with Montana highlighted. Montana is a state located in the Western United States.According to the 2020 United States Census, Montana is the 8th least populous state with 1,084,225 inhabitants but the 4th largest by land area spanning 145,545.80 square miles (376,961.9 km 2) of land. [1]
457. Louisiana (Shreveport–Bossier City, Monroe, Alexandria, Fisher, Tallulah, and most of northern Louisiana) September 25, 2025[3] will overlay area code 318 by 2026. previously a fictitious area code assigned to identify Naked DSL / Dry Loop and dedicated data lines in Saskatchewan.
Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]
Lists of United States area codes This page was last edited on 10 April 2015, at 20:25 (UTC) . Text is available under the Creative Commons Attribution-ShareAlike License 4.0 ; additional terms may apply.
This is a list of the counties in the U.S. state of Montana. There are 56 counties in the state. Montana has two consolidated city-counties—Anaconda with Deer Lodge County and Butte with Silver Bow County. The portion of Yellowstone National Park that lies within Montana was not part of any county until 1978, when part of it was nominally ...
0–9. Area code 406. Categories: Communications in Montana. Area codes in the United States by state or territory.
This article lists census-designated places (CDPs) in the U.S. state of Montana. As of 2018, there were a total of 235 census-designated places in Montana. As of 2018, there were a total of 235 census-designated places in Montana.