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Get answers to frequently asked questions about your online account, bills, payments, energy savings and more.
Call us
Customer Service: 1-888-460-4332
Monday - Friday, 7 a.m. - 7 p.m. ET.
Gas Emergencies: 1-888-460-4332
24/7
TDD/TTY
National Relay: 711
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Fax us
Mail us
For payments
Columbia Gas of Maryland
P.O. Box 70322
Philadelphia, PA 19176-0322
For other correspondence
Columbia Gas of Maryland
P.O. Box 2318
Columbus, OH 43216-2318
For bankruptcy notices
Columbia Gas of Maryland
Revenue Recovery
P.O. Box 117
Columbus, OH 43216