NiSource Inc. - Columbia Gas of Ohio, Inc. (Main Office) - Columbus, OH
Lawyers in Columbus, OH
200 Civic Center Drive Columbus, OH 43215 - 4138
Updated: 02/15/2026
Attorneys
Contact
200 Civic Center Drive
Columbus, OH 43215 - 4138
Fax Number: (219) 647-6060
Website: http://www.columbiagasohio.com
Indiana Locations
Indianapolis, IN (167.9 miles)
101 West Ohio Street
Suite 1707
Indianapolis, IN 46204
Phone Number: (877) 647-5990
Fax Number: (219) 647-6060
Website: http://www.nisource.com
Merrillville, IN (Main Office)
801 East 86th Avenue
Merrillville, IN 46410 - 6272
Fax Number: (219) 647-6060
Website: http://www.nisource.com
Pennsylvania Locations
121 Champion Way, Suite 100
Canonsburg, PA 15317
Fax Number: (219) 647-6060
Website: http://www.nisource.com
Texas Locations
5151 San Felipe, Suite 2500
Houston, TX 77056
Phone Number: (713) 267-4100
Fax Number: (219) 647-6060
Website: http://www.ngts.com
West Virginia Locations
1700 Maccorkle Ave. S.E.
Charleston, WV 25314 - 1518
Phone Number: (304) 357-3574
Fax Number: (219) 647-6060
Website: http://www.nisource.com
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