NiSource
Utilities · Mount Vernon, Pennsylvania
Products & Services
About NiSource
Welcome to NiSource. We serve nearly four million natural gas and electric customers across six states under our NiSource, NIPSCO and Columbia Gas brands.
Its primary NAICS classification is 541613 (Marketing Consulting Services). NiSource is one of 1,205 Utilities companies listed in Pennsylvania.
Business Contact Information
- Phone
- (219) 647-5990
- Fax
- (219) 647-5589
- Website
- www.nisource.com
- Address
- 801 E 86th Ave, Mount Vernon, Pennsylvania, 46410, United States
Industry & Classification
- Industry
- Utilities
- Sector
- Utilities
- Segment
- Electric Utilities
NAICS Codes
- 541613Marketing Consulting Services
- 221210Natural Gas Distribution
- 22Utilities
- 221Utilities
- 2211Electric Power Generation, Transmission and Distribution
- 22111Electric Power Generation
- 221112Fossil Fuel Electric Power Generation
- 221118Other Electric Power Generation
SIC Codes
- 4939
- 4932
Company Details
- Employees
- 7,687
- Annual Revenue
- $5.9M
NiSource: frequently asked questions
What does NiSource do?
Welcome to NiSource. We serve nearly four million natural gas and electric customers across six states under our NiSource, NIPSCO and Columbia Gas brands.
Where is NiSource located?
NiSource is located at 801 E 86th Ave, Mount Vernon, Pennsylvania, 46410, United States.
How many employees does NiSource have?
NiSource has about 7,687 employees.
What is NiSource's annual revenue?
NiSource's annual revenue is estimated at $5.9M.
What industry is NiSource in?
NiSource is in the Utilities / Utilities industry, and its primary NAICS code is 541613 (Marketing Consulting Services).
How can I contact NiSource?
Its website is www.nisource.com and its phone number is (219) 647-5990.
What companies are similar to NiSource?
Other large utilities companies in Pennsylvania include PPL Corp, UGI Corp, PECO Energy Co and Essential Utilities Inc.
Largest utilities companies in Pennsylvania
Largest companies in Pennsylvania
Largest utilities companies
Manufacturing sales in Pennsylvania, 2026
In Pennsylvania, Factur's 2026 study counted 44 manufacturing quotes worth $1.6M and 10 purchase orders over 12 months: 23% of quotes became orders, against 21% nationally. See the Pennsylvania data.
Own this business?
Keep your profile accurate — or ask us to take it down. We acknowledge requests within 7 days and resolve them within 30 days.
Prefer email? privacy@facturmfg.com
Add this badge to your website — show visitors you're listed on Factur Data.