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About Us

The InIGC Signtermountain Gas Company story began in 1950 when Nat and Myrtis Campbell read a newspaper article that piqued their interest in the natural gas industry. The company was incorporated that year. After five years of hard work laying the foundation for a new public utility company, Intermountain Gas Company received certification from the Idaho Public Utilities Commission on December 10, 1955. Then, on December 31, 1955, we connected our first five customers.

Since then, Intermountain Gas Company has grown along with Idaho. Today, Intermountain Gas Company is a natural gas distribution company serving approximately 350,000 residential, commercial and industrial customers in 75 communities in southern Idaho. Intermountain is a subsidiary of MDU Resources Group, Inc., a multidimensional natural resources enterprise traded on the New York Stock Exchange as “MDU.” For more information about MDU Resources, visit the company’s website at

Locations Map

Intermountain Natural Gas Headquarters is located at 555 S. Cole Road, Boise, ID 83709.

Communities Served in Idaho:
Aberdeen Grace Nampa
American Falls Greenleaf New Plymouth
Ammon Hailey Parker
Arimo Hammet Parma
Bancroft Hansen Paul
Basalt Heyburn Payette
Bellevue Homedale Pocatello
Blackfoot Idaho Falls Raft River
Bliss Inkom Rexburg
Boise Iona Rigby
Bruneau Jerome Ririe
Buhl Ketchum Rupert
Burley Kimberly Shelley
Caldwell Kuna Shoshone
Chubbuck Lava Hot Springs Soda Springs
Declo Lewisville Star
Eagle Malta St. Anthony
Emmett McCammon Sugar City
Filer Menan Sun Valley
Firth Meridian Twin Falls
Fort Hall Middleton Ucon
Fruitland Mountain Home Weiser
Garden City Montpelier Wendell
Georgetown Moreland/Riverside Wilder
Glenns Ferry Murtaugh