# List of critical infrastructure operators in the Nord department

Tamtam tracks 87 critical infrastructure operators headquartered in the Nord department. This list ranks the 30 largest by number of employees on LinkedIn, led by Dalkia, Centre Hospitalier de Douai and CHU de Lille. Their median headcount is 589. Half of them were founded in 1980 or later. The most common headquarters are Lille (13), Villeneuve-d'Ascq (3) and Marcq-en-Barœul (2).

The companies listed are primarily large-scale critical infrastructure operators in the Nord department, encompassing a mix of public services and large private sector entities. Many are well-established organizations, with a strong presence in banking, healthcare, and government administration.

Notable examples include Dalkia, which invests in renewable energy, Centre Hospitalier de Douai, providing extensive medical care, Caisse d'Epargne Hauts de France, a regional financial institution, and Métropole Européenne de Lille (MEL), managing public services. A significant pattern is the concentration of headquarters in Lille, indicating its role as a major administrative and economic hub within the department.

🇫🇷 Nord · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Dalkia](https://www.tamtam.ai/c/dalkia) (dalkia.fr)<br>Invests, develops renewable energy, and assists clients for energy savings, CO2 reduction by maintaining and operating industrial, commercial, and residential facilities. | Environmental Services | 🇫🇷 Saint-André-lez-Lille | 14,557 |  |
| 2 | [Centre Hospitalier de Douai](https://www.tamtam.ai/c/centre-hospitalier-de-douai) (ch-douai.fr)<br>Provides extensive medical, surgical, and emergency care with 35 specialties, serving 250,000 people and focusing on community health. | Hospitals and Health Care | 🇫🇷 Douai | 6,909 |  |
| 3 | [CHU de Lille](https://www.tamtam.ai/c/chu-de-lille) (chu-lille.fr)<br>A leading hospital-university campus in northern Europe, specializing in healthcare, research, innovation, and sustainability with over 15,000 professionals and 14 million patients yearly | Hospitals and Health Care | 🇫🇷 Lille | 5,567 |  |
| 4 | [Caisse d'Epargne Hauts de France](https://www.tamtam.ai/c/caisse-d-epargne-hauts-de-france) (caisse-epargne.fr)<br>Financial institution serving customers in the Hauts-de-France region, supporting local development, offering innovative banking solutions, and promoting responsible practices. | Banking | 🇫🇷 Lille | 2,473 | 2017 |
| 5 | [Métropole Européenne de Lille (MEL)](https://www.tamtam.ai/c/metropole-europeenne-de-lille-mel) (lillemetropole.fr)<br>Manages public services for over a million residents across 95 municipalities, covering areas like urban planning, transportation, culture, and economic development. | Government Administration | 🇫🇷 Lille | 2,140 | 1968 |
| 6 | [Crédit Agricole Nord de France](https://www.tamtam.ai/c/credit-agricole-nord-de-france) (ca-norddefrance.fr)<br>A regional bank in Nord-Pas de Calais offering savings, financing, insurance, and real estate services with a focus on local development and social progress | Banking | 🇫🇷 Lille | 2,000 | 2002 |
| 7 | [Oney](https://www.tamtam.ai/c/oney) (oney.com)<br>A unique bank rooted in commerce, Oney offers modern and sustainable financing and payment solutions across Europe, empowering individuals to improve their daily lives | Banking | 🇫🇷 Croix | 1,717 | 1983 |
| 8 | [Valenciennes's General Hospital](https://www.tamtam.ai/c/valenciennes-s-general-hospital) (ch-valenciennes.fr)<br>Provides extensive healthcare services with nearly 2000 beds, serving as a key regional hospital and referral center for 800,000 residents. | Hospitals and Health Care | 🇫🇷 Valenciennes | 1,655 |  |
| 9 | [CIC Nord Ouest](https://www.tamtam.ai/c/cic-nord-ouest) (cic.fr)<br>Regional bank in Hauts-de-France and Normandy with 257 branches, focusing on innovation and societal/environmental issues, supporting clients' projects and needs | Banking | 🇫🇷 Lille | 1,592 |  |
| 10 | [Cofidis Group](https://www.tamtam.ai/c/cofidis-group) (cofidis-group.com)<br>Expert in distance credit, offering consumer loans, payment solutions, insurance, credit consolidation, and banking services internationally since 1982. | Financial Services | 🇫🇷 Villeneuve-d'Ascq | 1,352 | 1982 |
| 11 | [ALEFPA](https://www.tamtam.ai/c/alefpa) (alefpa.fr)<br>An Association in the social and solidarity economy sector providing education, training, prevention, and support for individuals facing social difficulties or disabilities | Civic and Social Organizations | 🇫🇷 Lille | 1,315 | 1959 |
| 12 | [SDIS 59](https://www.tamtam.ai/c/sdis-59) (linktr.ee)<br>This company is a fire and rescue service department in the Nord region, responsible for emergency response and public safety | Government Administration | 🇫🇷 Lille | 1,117 |  |
| 13 | [Crédit Mutuel Nord Europe](https://www.tamtam.ai/c/credit-mutuel-nord-europe) (creditmutuel.fr)<br>Agile integrated banking group with 4000 employees serving 1.7 million client-members across Paris, Lille, and Brussels regions. | Banking | 🇫🇷 Lille | 976 |  |
| 14 | [CGI Finance](https://www.tamtam.ai/c/cgi-finance) (cgifinance.fr)<br>Provider of consumer credit solutions offering personal loans, credit cards, and financing options to individuals and businesses for various needs. | Banking | 🇫🇷 Marcq-en-Barœul | 847 | 1951 |
| 15 | [Santélys](https://www.tamtam.ai/c/santelys) (santelys.fr)<br>A non-profit organization specializing in healthcare, home care, and training Providing solutions for patients with chronic illnesses and offering healthcare education and research | Home Health Care Services | 🇫🇷 Loos | 589 | 1900 |
| 16 | [Centre Oscar Lambret](https://www.tamtam.ai/c/centre-oscar-lambret) (centreoscarlambret.fr)<br>Specialized cancer treatment, research, and education center with multidisciplinary professionals dedicated to improving patient outcomes and advancing oncology knowledge. | Hospitals and Health Care | 🇫🇷 Lille | 561 | 1955 |
| 17 | [Hôpital Alexandra Lepève - Centre Hospitalier Dunkerque](https://www.tamtam.ai/c/hopital-alexandra-lepeve-centre-hospitalier-dunkerque) (ch-dunkerque.fr)<br>Regional health institution, providing various medical services, elderly care, maternity, neonatology, gynecology-obstetrics, family planning, addictology, and health training. | Hospitals and Health Care | 🇫🇷 Dunkerque | 557 | 1976 |
| 18 | [Keolis Lille ilévia](https://www.tamtam.ai/c/keolis-lille-ilevia) (keolis-lille-ilevia.com)<br>A major operator of public passenger transport in France and internationally, focusing on providing seamless and convenient transportation for travelers | Urban Transit Services | 🇫🇷 Marcq-en-Barœul | 457 |  |
| 19 | [CPAM de Lille-Douai](https://www.tamtam.ai/c/cpam-de-lille-douai) (ameli.fr)<br>Manages health, maternity, work accidents, and occupational diseases for beneficiaries. Engages with health professionals and employers, providing public service for social protection. | Government Administration | 🇫🇷 Lille | 447 | 1945 |
| 20 | [CENTRE HOSPITALIER DE TOURCOING](https://www.tamtam.ai/c/centre-hospitalier-de-tourcoing) (ch-tourcoing.fr)<br>A public health establishment in Tourcoing, France, providing a wide range of medical services including infectious diseases, obstetrics, surgery, and geriatrics | Hospitals | 🇫🇷 Tourcoing | 377 | 1980 |
| 21 | [CENTRE HOSPITALIER DE CAMBRAI](https://www.tamtam.ai/c/centre-hospitalier-de-cambrai) (ch-cambrai.fr)<br>Provides comprehensive medical and healthcare services including patient treatment, diagnosis, and hospital care in Cambrai, France. | Hospitals | 🇫🇷 Cambrai | 358 |  |
| 22 | [CENTRE HOSPITALIER DE ROUBAIX](https://www.tamtam.ai/c/centre-hospitalier-de-roubaix) (ch-roubaix.fr)<br>Provides medical care and support to approximately 300,000 residents in the northeastern Lille metropolitan area with 3,000 staff. | Hospitals and Health Care | 🇫🇷 Roubaix | 352 |  |
| 23 | [EPSM de l'agglomération lilloise - GHT Psy NPdC](https://www.tamtam.ai/c/epsm-de-l-agglomeration-lilloise-ght-psy-npdc) (epsm-al.fr)<br>Mental health care provider serving Lille area with inpatient, outpatient, therapeutic, addiction, and social support services for psychiatric patients. | Hospitals and Health Care | 🇫🇷 Saint-André-lez-Lille | 347 | 1825 |
| 24 | [UGECAM Hauts-de-France](https://www.tamtam.ai/c/ugecam-hauts-de-france) (groupe-ugecam.fr)<br>A private non-profit organization providing comprehensive healthcare and social services to patients of all ages with neurological, musculoskeletal, psychiatric, and developmental disorders | Hospitals and Health Care | 🇫🇷 Lille | 347 | 2000 |
| 25 | [Centre Hospitalier de Maubeuge](https://www.tamtam.ai/c/centre-hospitalier-de-maubeuge) (ch-maubeuge.fr)<br>Manages a public health establishment serving 240,000 inhabitants, coordinating medical strategy, quality improvement, and care safety with other local hospitals. | Hospitals and Health Care | 🇫🇷 Maubeuge | 341 |  |
| 26 | [Creatis](https://www.tamtam.ai/c/creatis-villeneuve-d-ascq) (creatis.fr)<br>Specializing in credit consolidation, this company aims to empower clients, partners, and employees to create a better world by 2030 | Banking | 🇫🇷 Villeneuve-d'Ascq | 339 | 1998 |
| 27 | [Europorte](https://www.tamtam.ai/c/europorte) (europorte.com)<br>French private rail freight operator, providing comprehensive logistics for goods transport, from collection to delivery, industrial site services, and infrastructure management. | Rail Transportation | 🇫🇷 Lille | 336 |  |
| 28 | [Monabanq](https://www.tamtam.ai/c/monabanq) (monabanq.com)<br>Online bank prioritizing customer well-being and employee satisfaction, recognized for excellent service and a supportive work environment. | Banking | 🇫🇷 Villeneuve-d'Ascq | 321 | 2006 |
| 29 | [CLINIQUE AMBROISE PARE](https://www.tamtam.ai/c/clinique-ambroise-pare) (clinique-ambroise-pare-lille.ramsaysante.fr)<br>Specialized in ophthalmologic surgery, this clinic, part of Ramsay Santé group, performs 95% of operations on an outpatient basis Offers inpatient and outpatient care | Hospitals and Health Care | 🇫🇷 Lille | 294 | 1997 |
| 30 | [CPAM du Hainaut (Assurance Maladie)](https://www.tamtam.ai/c/cpam-du-hainaut-assurance-maladie) (assurance-maladie.ameli.fr)<br>Working within a collective focused on health protection, this company in the healthcare sector ensures access to care, prevention actions, and healthcare quality control for over 60 million insured individuals | Government Administration | 🇫🇷 Valenciennes | 286 | 1945 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.

## More company lists in the Nord department

- [The largest companies in the Nord department](https://www.tamtam.ai/l/largest-companies-nord) (2,806)
- [Multinational companies in the Nord department](https://www.tamtam.ai/l/multinational-companies-nord) (332)
- [Retail chains in the Nord department](https://www.tamtam.ai/l/retail-chains-nord) (268)
- [Companies with in-house R&D in the Nord department](https://www.tamtam.ai/l/r-and-d-companies-nord) (237)
- [Manufacturers in the Nord department](https://www.tamtam.ai/l/manufacturers-nord) (204)
- [Professional services firms in the Nord department](https://www.tamtam.ai/l/professional-services-firms-nord) (178)
- [IT services companies in the Nord department](https://www.tamtam.ai/l/it-services-companies-nord) (170)
- [IT Services and IT Consulting companies in the Nord department](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-nord) (169)
- [SaaS companies in the Nord department](https://www.tamtam.ai/l/saas-companies-nord) (163)
- [Family-owned companies in the Nord department](https://www.tamtam.ai/l/family-owned-companies-nord) (156)
- [Software Development companies in the Nord department](https://www.tamtam.ai/l/software-development-companies-nord) (141)
- [Public sector organisations in the Nord department](https://www.tamtam.ai/l/public-sector-organisations-nord) (135)
- [Distributors and wholesalers in the Nord department](https://www.tamtam.ai/l/distributors-and-wholesalers-nord) (133)
- [Hardware manufacturers in the Nord department](https://www.tamtam.ai/l/hardware-companies-nord) (124)
- [Consulting firms in the Nord department](https://www.tamtam.ai/l/consulting-firms-nord) (115)
- [Retail companies in the Nord department](https://www.tamtam.ai/l/retail-companies-nord) (108)
- [Education providers in the Nord department](https://www.tamtam.ai/l/education-companies-nord) (103)
- [Real Estate companies in the Nord department](https://www.tamtam.ai/l/real-estate-companies-nord) (92)
- [Companies with a mobile app in the Nord department](https://www.tamtam.ai/l/companies-with-mobile-app-nord) (83)
- [Healthcare providers in the Nord department](https://www.tamtam.ai/l/healthcare-providers-nord) (82)
- [E-commerce companies in the Nord department](https://www.tamtam.ai/l/ecommerce-companies-nord) (81)
- [Financial services firms in the Nord department](https://www.tamtam.ai/l/financial-services-firms-nord) (81)
- [Business Consulting and Services companies in the Nord department](https://www.tamtam.ai/l/business-consulting-and-services-companies-nord) (81)
- [Advertising Services companies in the Nord department](https://www.tamtam.ai/l/advertising-services-companies-nord) (68)

## The same list elsewhere in France

- [Critical infrastructure operators in France](https://www.tamtam.ai/l/critical-infrastructure-operators-france) (2,721)
- [Critical infrastructure operators in Île-de-France](https://www.tamtam.ai/l/critical-infrastructure-operators-ile-de-france) (780)
- [Critical infrastructure operators in Auvergne-Rhône-Alpes](https://www.tamtam.ai/l/critical-infrastructure-operators-auvergne-rhone-alpes) (299)
- [Critical infrastructure operators in Grand Est](https://www.tamtam.ai/l/critical-infrastructure-operators-grand-est) (257)
- [Critical infrastructure operators in Occitanie](https://www.tamtam.ai/l/critical-infrastructure-operators-occitanie) (216)
- [Critical infrastructure operators in Nouvelle-Aquitaine](https://www.tamtam.ai/l/critical-infrastructure-operators-nouvelle-aquitaine) (209)
- [Critical infrastructure operators in Provence-Alpes-Côte d'Azur](https://www.tamtam.ai/l/critical-infrastructure-operators-provence-alpes-cote-dazur) (200)
- [Critical infrastructure operators in Hauts-de-France](https://www.tamtam.ai/l/critical-infrastructure-operators-hauts-de-france) (174)
- [Critical infrastructure operators in the Hauts-de-Seine department](https://www.tamtam.ai/l/critical-infrastructure-operators-hauts-de-seine) (169)
- [Critical infrastructure operators in Pays de la Loire](https://www.tamtam.ai/l/critical-infrastructure-operators-pays-de-la-loire) (127)
- [Critical infrastructure operators in Brittany](https://www.tamtam.ai/l/critical-infrastructure-operators-brittany) (120)
- [Critical infrastructure operators in Normandy](https://www.tamtam.ai/l/critical-infrastructure-operators-normandy) (103)
- [Critical infrastructure operators in the Bouches-du-Rhône department](https://www.tamtam.ai/l/critical-infrastructure-operators-bouches-du-rhone) (98)
- [Critical infrastructure operators in the Rhône department](https://www.tamtam.ai/l/critical-infrastructure-operators-rhone) (94)
- [Critical infrastructure operators in Centre-Val de Loire](https://www.tamtam.ai/l/critical-infrastructure-operators-centre-val-de-loire) (87)
- [Critical infrastructure operators in Bourgogne-Franche-Comté](https://www.tamtam.ai/l/critical-infrastructure-operators-bourgogne-franche-comte) (76)
- [Critical infrastructure operators in the Haute-Garonne department](https://www.tamtam.ai/l/critical-infrastructure-operators-haute-garonne) (64)
- [Critical infrastructure operators in the Gironde department](https://www.tamtam.ai/l/critical-infrastructure-operators-gironde) (63)
- [Critical infrastructure operators in the Loire-Atlantique department](https://www.tamtam.ai/l/critical-infrastructure-operators-loire-atlantique) (59)
- [Critical infrastructure operators in the Hérault department](https://www.tamtam.ai/l/critical-infrastructure-operators-herault) (57)
- [Critical infrastructure operators in the Seine-Saint-Denis department](https://www.tamtam.ai/l/critical-infrastructure-operators-seine-saint-denis) (53)
- [Critical infrastructure operators in the Seine-Maritime department](https://www.tamtam.ai/l/critical-infrastructure-operators-seine-maritime) (46)
- [Critical infrastructure operators in the Ille-et-Vilaine department](https://www.tamtam.ai/l/critical-infrastructure-operators-ille-et-vilaine) (45)
- [Critical infrastructure operators in Paris](https://www.tamtam.ai/l/critical-infrastructure-operators-paris) (331)

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Source: https://www.tamtam.ai/l/critical-infrastructure-operators-nord