Where is southwest gas located in tucson az? 3401 E Gas Rd Tucson, AZ 85714 Southwest gas tries to work with there clients as much as possible. 2. Southwest Gas Corporation Gas CompaniesUtility ContractorsElectric CompaniesHow do i contact the southwest gas corporation? You may contact the Southwest Gas Corporation by calling 602-763-3289, or by addressing inquiries to the office mailing address: Southwest Gas Corporation, 1600 East Northern Avenue, Phoenix, Arizona, 85020.How many employees does southwest gas have? Southwest Gas Corporation maintains a staff of over 2,400 employees. The corporation uses an automated account system, as well as offers electronic billing services. Its affiliates include Carson Water Company, Pataya Storage Company and Total Energy Construction.How do i contact southwest airlines customer service? Drop us a line or give us a ring. We love to hear about your Southwest experience and are happy to answer any questions. We're here 24/7. 1-800-I-FLY-SWA