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Louisiana— USA

Companies in Louisiana

1.1M companies registered in Louisiana, sourced from official business registers and enriched with industry, size, location and contact data. Below: the largest companies by reported revenue, and how the Louisiana business base breaks down by industry and headcount.

1.1M
companies
#18
of 50 states
1.7%
of US records
15
industries ranked
September 2026
data updated

Part of the United States company directory.

Rankings

Largest companies in Louisiana

By reported (actual) revenue, updated September 2026. Public-sector entities are excluded.

#CompanyIndustryCityRevenue (USD)Employees
1Entergy CorporationElectric power generation, transmission and distributionNew Orleans$12.9B12,233
2Lumen Technologies, Inc.Wireless telecommunications activitiesMonroe$12.4B24,000
3CGB Enterprises, Inc.Warehousing and storageCovington$10.4B3,250
4Zen-Noh America Holdings Corp.Wholesale of grain, unmanufactured tobacco, seeds and animal feedsCovington$10.2B250
5Ochsner Clinic FoundationHospital activitiesJefferson$6B10,500
6Entergy Louisiana, LLCManufacture of gas; distribution of gaseous fuels through mainsJefferson$5.7B1,615
7Pool CorporationWholesale of other household goodsCovington$5.3B6,000
8Qwest CorporationWired telecommunications activitiesMonroe$4.7B9,100
9Louisiana Childrens Medical Center, IncHospital activitiesNew Orleans$3.9B6,100
10Franciscan Missionaries of Our Lady Health System, Inc.Other human health activitiesBaton Rouge$3.4B9,000
11Amedisys, Inc.Other human health activitiesBaton Rouge$2.3B19,000
12MMR Group, Inc.Electrical installationBaton Rouge$2.3B4,000
13Lhc Group, Inc.Non-life insuranceLafayette$2.3B30,000
14Lamar Media Corp.Advertising agenciesBaton Rouge$2.3B3,500
15Lamar Advertising CompanyAdvertising agenciesBaton Rouge$2.3B3,500
16Our Lady of The Lake Hospital, Inc.Hospital activitiesBaton Rouge$2.2B1,800
17MMR Constructors, Inc.Electrical installationBaton Rouge$2.1B4,000
18Entergy Services, LLCCombined office administrative service activitiesNew Orleans$1.7B1,325
19Willis-Knighton Medical CenterHospital activitiesShreveport$1.5B3,089
20The Administrators of The Tulane Educational FundTertiary educationNew Orleans$1.4B5,500
21Cleco Corporate Holdings LLCElectric power generation, transmission and distributionPineville$1.3B1,148
22Cleco Power LLCElectric power generation, transmission and distributionPineville$1.3B925
23Ochsner Lsu Health System of North LouisianaHospital activitiesShreveport$1B3
24Louisiana State UniversityTertiary educationBaton Rouge$968M26,000
25Lsu Health Sciences Center New OrleansTertiary educationNew Orleans$908M2

Top 25 by revenue reported to the register. Companies filing no revenue figure are not ranked, whatever their size.

Entergy Corporation leads Louisiana at $12.9B in reported revenue, from New Orleans.

Coverage

Companies by industry in Louisiana

The industries holding the most companies, by NACE activity code.

Other business support service activities n.e.c.8299
88,141
Business and other management consultancy activities7022
38,648
Management of real estate on a fee or contract basis6832
35,404
Construction of residential and non-residential buildings4120
31,209
Trusts, funds and similar financial entities6430
30,067
Restaurants and mobile food service activities5610
29,621
Other human health activities8690
22,040
Other transportation support activities5229
21,414
Activities of religious organisations9491
20,599
Hairdressing and other beauty treatment9602
19,963
Real estate agencies6831
18,363
General medical practice activities8621
17,726
Maintenance and repair of motor vehicles4520
17,064
Retail sale of clothing in specialised stores4771
17,026
Legal activities6910
16,665

Ranked by number of companies. Each record carries its NACE code alongside SIC and NAICS, so the same segment can be pulled in any of the three schemes.

Browse these directories

Other business support service activities n.e.c. is the largest activity in Louisiana, with 88,141 companies.

Distribution

Company size

By number of employees.

1-4
973,674
5-9
61,928
10-19
18,192
20-49
10,746
50-99
4,399
100-199
1,894
200-499
1,114
500-999
418
1000+
319

14,162 companies have no disclosed headcount (excluded from the chart).

91% of Louisiana companies with a disclosed headcount fall in the 1-4 employee band.

Data coverage

What a Louisiana record carries

Share of the state's companies holding each contact field.

19%

with a website

37%

with a phone number

12%

with an email address

Counted against the 1.1M companies in Louisiana. Firmographics — industry, size, address, status — are present on every record.

FAQ

Companies in Louisiana — frequently asked questions

There are 1.1M companies registered in Louisiana in the InfobelPRO database, across every sector from sole proprietorships to large enterprises.
By revenue reported to the register, the largest company headquartered in Louisiana is Entergy Corporation, based in New Orleans, in electric power generation, transmission and distribution.
Other business support service activities n.e.c. (88,141 companies), Business and other management consultancy activities (38,648 companies), Management of real estate on a fee or contract basis (35,404 companies) lead the Louisiana business base by number of companies.
Registered name and address, industry classification in NACE, SIC and NAICS, company status and legal form, employee band, reported revenue where filed, and contact fields — website, phone and email — where available.
Yes. The Louisiana file is available as a bulk export or through the API, filtered by industry, company size, city or revenue. Licensing is on volume and use, not per seat.

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