The Intermountain 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 335,000 residential, commercial and industrial customers in 75 communities in southern Idaho. Intermountain is a subsidiary of MDU Resources Group, Inc., a multidemensional natural resources enterprise traded on the New York Stock Exchange as 'MDU.' For more information about MDU Resources.

Customer Service

Intermountain Gas Company provides you with the comfort you expect from an energy source and unsurpassed quality service at the lowest possible cost. Our attentive and dedicated employees are available to help you with any questions or concerns you may have. In addition to delivering natural gas safely to your home, we also provide a variety of educational materials, energy safety training and other services. Information on our website will answer most questions. If your question is not answered, please contact us via the options below.

Gas Service Emergency

You can report a gas leak, carbon monoxide alarm, a line break or any other natural gas service emergency by contacting us at 1-800-548-3679 any time of day. Please do not make emergency requests via email. Find out more...

Customer Service Requests

Contact Intermountain Gas Monday through Friday, 7 a.m. to 7 p.m. Treasure Valley customers can call 377-6840. For all other areas call 1-800-548-3679. You can also email us at customerservice@intgas.com

Privacy Information

Intermountain Gas Company respects and protects your privacy and recognizes the importance of our customers’ trust. The pamphlet, We Value Your Privacy, will help inform you of the types of nonpublic personal information that we collect, security measures that we take, and how we share information inside and outside of our company. We also understand the importance of protecting the privacy of all information provided by customers and other visitors to the website.

Continuous Service Agreements

For property owners who would like to maintain continuous service to properties they rent, we offer a Continuous Service Agreement (CSA) program.  Please visit our Property Owners & Landlords page for more information, including an electronic copy of the ​CSA.