Utility overview
- Legal name
- Columbia Gas of Ohio, Inc.
- Parent organization
- NiSource Inc.
- Ownership type
- Investor-Owned
- Utility class
- Major Regulated
Official website and contact
- Official website: Visit official website (opens in a new tab)
- Customer service: 1-800-344-4077
- Gas emergency: 1-800-344-4077
- Email: Not listed
- Address: Not listed
Published state services
Ohio — OH
Service area: ~1.5 million customers statewide (Columbia Gas of Ohio service territory).
Rate jurisdiction: Public Utilities Commission of Ohio
Customer classes: Commercial, Residential
Last confirmed: Aug 23, 2026
- State customer URL: Open link (opens in a new tab)
- Tariff or territory source: Open link (opens in a new tab)
Utility identity sources
- P.U.C.O. No. 2 — Rules and Regulations Governing the Distribution and Sale of Gas (opens in a new tab)
Tariff · Columbia Gas of Ohio, Inc.
State-service sources
Ohio — OH
- Natural Gas Distribution Companies (opens in a new tab)
State Regulator Inventory · Public Utilities Commission of Ohio
- Natural gas overview (opens in a new tab)
State Regulator Inventory · PUCO
Verified utility identity
Verified means GCC confirmed utility identity, retail gas-distribution status, and state-service evidence against authoritative sources.
Confirmation status
- Last confirmed
- Aug 23, 2026
- Reconfirmation status
- Current
Directory-information notice
GCC provides directory information only. Listings are not legal advice, regulatory advice, endorsements, or guarantees of utility service eligibility.
Service-area summaries are high-level and do not guarantee service at a specific address. Contact the listed utility directly for address-level eligibility.