Customer Service - 24 hours a day:
Residential - (800) 427-2200
Commercial and Industrial - (800) 427-2200
Self Service Interactive Voice Response - (800) 772-5050
Information in Spanish - 800.342.4545

Mail-in Payment:
Southern California Gas Company
PO Box C
Monterey Park, CA 91756

For general correspondence:
Centralized Correspondence
PO Box 3150
San Dimas, CA 91773

For general information on Southern California Gas Company, visit their website at socalgas.com.