Where is NiSource headquartered?
In Merrillville, Indiana, United States.
List of NiSource subsidiaries
NiSource Inc. is a leading energy holding company headquartered in United States. Established in 1912, NiSource operates through an extensive corporate structure with 173 subsidiaries across the United States. This ownership data is provided by CompanyData.com’s verified corporate hierarchy database, which covers over 380 million companies worldwide.
NiSource’s subsidiaries are all located within the United States (100%), highlighting its focused operations mainly in the North American energy market. The company’s subsidiaries support a broad range of services in the electricity and gas industries, serving millions of customers across multiple states.
Global ownership data
Download subsidiary lists
Structured hierarchies
Contact and email data
| Company Name | Country | City | Address 1 | Address 2 | State/Province | Postal Code | Website | Founding Year | Yearly Revenue in U.S. Dollars | Employees Total | Business Legal Type - Description | Number of Companies in Group | Company Registration Number | Phone Number | UniqueID | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |
Northern Indiana Public Service Company LLC
|
USA
|
Portage
|
5584 Lark Ave
|
N/A
|
Porter
|
46368
|
nipsco.com
|
N/A
|
$0
|
48
|
173
|
N/A
|
******@***.***
|
21*****43
|
0160271013
|
|
| 2 |
Nisource Corporate Services Company
|
USA
|
Merrillville
|
801 E 86th Ave
|
N/A
|
Lake
|
46410
|
nisource.com
|
1933
|
$590,744,057
|
1700
|
Corporation
|
173
|
0319621
|
************@********.***
|
21*****90
|
0130995823
|
| 3 |
Columbia Gas Of Virginia, INC.
|
USA
|
Chesterfield
|
1809 Coyote Dr
|
N/A
|
Chesterfield
|
23836
|
nisource.com
|
1854
|
$96,554,214
|
275
|
Corporation
|
173
|
00080069
|
**********@***.***
|
80*****70
|
0119052087
|
| 4 |
Northern Indiana Public Service Company LLC
|
USA
|
Valparaiso
|
22 S State Road 49
|
N/A
|
Porter
|
46383
|
nipsco.com
|
N/A
|
$0
|
143
|
173
|
N/A
|
***********@***.***
|
80*****26
|
0274881914
|
|
| 5 |
Northern Indiana Public Service Company LLC
|
USA
|
South Bend
|
1039 Pennsylvania Ave
|
N/A
|
St. Joseph
|
46601
|
nipsco.com
|
N/A
|
$0
|
86
|
173
|
N/A
|
********@*****.***
|
80*****26
|
0729112568
|
|
| 6 |
Columbia Gas Of Ohio, INC.
|
USA
|
Steubenville
|
300 Luray Dr
|
N/A
|
Jefferson
|
43953
|
columbiagasohio.com
|
N/A
|
$0
|
78
|
173
|
N/A
|
*****@********.***
|
74*****77
|
0233913469
|
|
| 7 |
Columbia Gas Of Pennsylvania, INC.
|
USA
|
Charleroi
|
150 Arentzen Blvd
|
N/A
|
Washington
|
15022
|
columbiagaspa.com
|
N/A
|
$0
|
72
|
173
|
N/A
|
*********@***.***
|
72*****50
|
0198674917
|
|
| 8 |
Columbia Gas Of Pennsylvania, INC.
|
USA
|
Pittsburgh
|
650 Washington Rd
|
N/A
|
Allegheny
|
15270
|
columbiagaspa.com
|
N/A
|
$0
|
68
|
173
|
N/A
|
***********@***.***
|
72*****81
|
0988357243
|
|
| 9 |
Northern Indiana Public Service Company LLC
|
USA
|
Valparaiso
|
3001 Leonard Dr Ste 205
|
N/A
|
Porter
|
46383
|
N/A
|
N/A
|
$0
|
62
|
173
|
N/A
|
*******@***.***
|
21*****31
|
0138183380
|
|
| 10 |
Columbia Gas Of Pennsylvania, INC.
|
USA
|
Philadelphia
|
N/A
|
N/A
|
Philadelphia
|
19176
|
N/A
|
N/A
|
$0
|
59
|
173
|
N/A
|
********@******.***
|
0228614217
|
||
| 11 |
Columbia Gas Of Kentucky, INC.
|
USA
|
Prestonsburg
|
1749 Us Highway 23 N
|
N/A
|
Floyd
|
41653
|
N/A
|
N/A
|
$0
|
46
|
173
|
N/A
|
*********@***.***
|
60*****73
|
0724887573
|
|
| 12 |
Northern Indiana Public Service Company LLC
|
USA
|
Peru
|
1619 W Logansport Rd
|
N/A
|
Miami
|
46970
|
N/A
|
N/A
|
$0
|
46
|
173
|
N/A
|
**********@******.***
|
01067888730
|
||
| 13 |
Nisource INC.
|
USA
|
Valparaiso
|
2755 Raystone Dr
|
N/A
|
Porter
|
46383
|
nisource.com
|
N/A
|
$0
|
18
|
173
|
N/A
|
***********@*******.***
|
21*****90
|
0183045501
|
|
| 14 |
Columbia Gas Of Ohio, INC.
|
USA
|
Athens
|
2009 E State St
|
N/A
|
Athens
|
45701
|
columbiagastrans.com
|
N/A
|
$0
|
15
|
173
|
N/A
|
******@*****.***
|
80*****63
|
0277977776
|
|
| 15 |
Columbia Gas Of Kentucky, INC.
|
USA
|
Maysville
|
325 Moody Dr
|
N/A
|
Mason
|
41056
|
N/A
|
N/A
|
$0
|
10
|
173
|
N/A
|
**********@***.***
|
0134918583
|
||
| 16 |
Columbia Gas Of Virginia, INC
|
USA
|
Harrisonburg
|
126 W Bruce St
|
N/A
|
Harrisonburg
|
22801
|
N/A
|
N/A
|
$0
|
10
|
173
|
N/A
|
*****@******.***
|
0158078406
|
||
| 17 |
Columbia Gas Of Virginia, INC.
|
USA
|
Broadway
|
226 Hawks Hill Dr
|
N/A
|
Rockingham
|
22815
|
columbiagasva.com
|
N/A
|
$0
|
9
|
173
|
N/A
|
**********@****.***
|
54*****79
|
0190285622
|
|
| 18 |
Columbia Gas Of Virginia, INC.
|
USA
|
Fredericksburg
|
12301 Chewning Ln
|
N/A
|
Fredericksburg
|
22407
|
columbiagasva.com
|
N/A
|
$0
|
9
|
173
|
N/A
|
**********@********.***
|
54*****59
|
0164141399
|
|
| 19 |
Nisource INC.
|
USA
|
Brockton
|
995 Belmont St
|
N/A
|
Plymouth
|
02301
|
nisource.com
|
N/A
|
$0
|
5
|
173
|
N/A
|
******@****.***
|
61*****44
|
0208042025
|
|
| 20 |
Northern Indiana Public Service Company
|
USA
|
Gary
|
2911 W 10th Ave
|
N/A
|
Lake
|
46404
|
N/A
|
N/A
|
$0
|
3
|
173
|
N/A
|
***********@***.***
|
21*****82
|
0892377907
|
|
| 21 |
Rosewater Wind Farm LLC
|
USA
|
Houston
|
808 Travis St Ste 700
|
N/A
|
Harris
|
77002
|
edpr.com/north-america
|
2024
|
$1,518,478
|
1
|
Corporation
|
173
|
N/A
|
*****@******.***
|
71*****50
|
0228566788
|
| 22 |
Nisource INC.
|
USA
|
Hartsville
|
5422 Green Grove Rd
|
N/A
|
Trousdale
|
37074
|
N/A
|
N/A
|
$0
|
1
|
173
|
N/A
|
*******@*****.***
|
61*****11
|
0199407990
|
|
| 23 |
Nisource INC.
|
USA
|
Haverhill
|
55 Foundation Ave
|
N/A
|
Essex
|
01835
|
N/A
|
N/A
|
$0
|
1
|
173
|
N/A
|
************@********.***
|
61*****19
|
0228538783
|
|
| 24 |
Nisource Gas Distribution Group, INC.
|
USA
|
Merrillville
|
801 E 86th Ave
|
N/A
|
Lake
|
46410
|
nisource.com
|
2019
|
$7,862,807
|
1
|
173
|
N/A
|
**********@*******.***
|
21*****90
|
0228389974
|
|
| 25 |
Nisource INC.
|
USA
|
Brockton
|
65 Crescent St
|
N/A
|
Plymouth
|
02301
|
nisource.com
|
N/A
|
$0
|
1
|
173
|
N/A
|
********@*******.***
|
50*****78
|
0170024276
|
|
| 26 |
Nisource INC.
|
USA
|
Smithfield
|
100 Laurel View Dr
|
N/A
|
Huntingdon
|
15478
|
nisource.com
|
N/A
|
$0
|
1
|
173
|
N/A
|
******@******.***
|
72*****00
|
0157036409
|
Access data on 173 US subsidiaries
NiSource’s ownership network is part of our extensive company ownership database, covering over 41 million corporate hierarchies worldwide. Our data shows how companies, including NiSource, are organized globally, displaying parent companies and subsidiaries with verified information from more than 200 countries and jurisdictions. Learn more about our database and request your custom data sample today.
In Merrillville, Indiana, United States.
NiSource owns 173 subsidiaries, all based in the United States.
NiSource is publicly listed with multiple shareholders.
Yes, NiSource is incorporated in the United States (NYSE ticker: NI).
NiSource employs approximately 6,600 people.
Global data. Local insights.
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Corporate family tree
Knowing ownership details is essential to understand how companies operate and connect with each other. Our corporate hierarchy data lets you follow the links between parent companies, subsidiaries, and shareholders. This reveals how control, structure, and risk are spread within any global group. Whether you are analyzing NiSource or another large corporation, this information helps with regulatory compliance, market research, and improving CRM data. With verified ownership data covering over 380 million companies worldwide, CompanyData.com offers a clear picture of who owns whom across countries and industries.
At CompanyData.com, every company profile — including NiSource — is organized using our three-level headquarters model: Global, National, and Local. This method shows how each unit fits into the full corporate structure.
Each entity receives a unique ID, enabling you to trace subsidiary connections, follow ownership paths, and connect data across your systems.
Control is shown through ownership percentage. When NiSource owns more than 50% of another company, it is considered a controlled subsidiary. Our data highlights these majority control links clearly to present true corporate structures. This method makes complex structures like NiSource’s transparent and easy to follow.
This structure shows who the real decision-makers are within NiSource’s network, making compliance audits, risk assessments, and mergers & acquisitions simpler. With verified ownership data covering more than 173 subsidiaries across the United States, NiSource’s detailed corporate layout can be fully explored. Our platform helps teams worldwide understand corporate networks with confidence and precision.
CompanyData.com supports global companies that need reliable information on corporate ownership and subsidiary networks, useful for compliance checks, market research, and CRM improvements. We offer free sample data; larger samples (up to 1,000 companies) are available for verified corporate clients with a clear use case and active website. If you need direct contact or lead lists, please see our Company Data Platform.
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At CompanyData.com, you can get detailed and verified data on NiSource Inc. and all its subsidiaries, updated frequently. This data includes company names, registration details, locations within the United States, industry classifications (including Energy), financial figures, and key contacts. Access the data via the Bold Platform, API, or bulk file delivery. Our database ensures complete and accurate coverage of all NiSource entities within the US.
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