Gas Utilities Directory — utility profile
Nicor Gas Company
Illinois · Investor-Owned · Major Regulated
Utility overview
- Utility name
- Nicor Gas Company
- Legal name
- Northern Illinois Gas Company d/b/a Nicor Gas Company
- Ownership type
- Investor-Owned
- Utility class
- Major Regulated
- Rate jurisdiction
- Illinois Commerce Commission
- State directory
- Illinois utilities
- Customer classes
- Commercial, Residential
Official website and contact
- Official website
- www.nicorgas.com
- Customer service phone
- 1-888-642-6748
- Not published
Contact details are shown only where the utility publishes them.
Published state services
Illinois
Natural gas distribution in northern Illinois (Ill.C.C. No. 16 gas service schedule territory).
Customer classes: Commercial, Residential
Last confirmed: August 27, 2026
State customer informationVerification sources
- Nicor Gas — Ill.C.C. No. 16 Gas Service Schedule
ICC · Tariff — Rate 1 Residential Service; Rate 4 General Service (accessed 2026-08-27)
- Nicor Gas home
Nicor Gas · Official Utility Website — Company identity and customer portal (accessed 2026-08-27)
- ICC filing — Nicor Gas tariff sheets (Rate 1, Rate 4)
ICC · State Regulator Inventory — Northern Illinois Gas Company d/b/a Nicor Gas Company; ICC jurisdiction (accessed 2026-08-27)