The 62 largest companies in Orange (2026 list)

#	Company	Industry	Headquarters	Employees	Founded
1	Avangrid avangrid.com A leading sustainable energy company with a focus on transitioning America to a clean future through its Networks and Renewables businesses	Utilities	🇺🇸 Orange	7,096	n/a
2	UCI Health linktr.ee A leading healthcare provider in Orange County offering high-quality medical care through top physicians, surgeons, and clinical staff	Hospitals and Health Care	🇺🇸 Orange	5,789	1976
3	SAS Retail Services sasretail.com SAS Retail Services transforms retail environments with technology and expertise, optimizing merchandising to drive sales and execute clients' visions	Retail	🇺🇸 Orange	5,584	1991
4	CHOC Children's choc.org Pediatric healthcare system with premier facilities, advanced programs, research, and training dedicated to children's health and recovery.	Hospitals and Health Care	🇺🇸 Orange	4,876	1964
5	Chapman University chapman.edu Creating top-ranked, personalized and interdisciplinary educational experiences that cultivate ethical, innovative global citizen-leaders ready to improve their community and world	Higher Education	🇺🇸 Orange	4,647	n/a
6	MSI msisurfaces.com Leading supplier of flooring, countertop, wall tile, and hardscaping products in North America, offering a diverse range from 37 countries	Wholesale Building Materials	🇺🇸 Orange	4,601	1975
7	Western Dental & Orthodontics careers-sonrava.icims.com Provides accessible, affordable general and specialty dental care to over a million individuals annually across multiple states, including Medi-Cal beneficiaries.	Hospitals and Health Care	🇺🇸 Orange	2,099	1903
8	Argosy University argosy.edu This nonprofit academic institution offers diverse undergraduate and graduate degree programs across eight colleges, focusing on practical knowledge, skills, and professional values in a supportive, student-centered environment.	Higher Education	🇺🇸 Orange	1,665	2001
9	Orange Unified School District orangeusd.org The Orange Unified School District educates over 28,000 students throughout various cities and county areas in California since 1953	Primary and Secondary Education	🇺🇸 Orange	1,644	1953
10	Carrington Mortgage Services, LLC carringtonmortgage.com A mortgage company that provides a variety of home loan programs (FHA, VA, USDA, Conventional, Non-QM) for purchase and refinance	Financial Services	🇺🇸 Orange	1,402	2007
11	Alignment Health alignmenthealth.com Innovative health care delivery model focused on wellness, cost reduction and improved patient outcomes through data-driven technology and personalized care	Hospitals and Health Care	🇺🇸 Orange	1,120	2013
12	CalOptima caloptima.org Health system in Orange County administering insurance programs for low-income children, adults, seniors, and disabled individuals through various Medicaid and Medicare plans	Hospitals and Health Care	🇺🇸 Orange	1,090	1993
13	The Edge Fitness Clubs LLC theedgefitnessclubs.com A fitness club with energetic staff, innovative programs, and top-tier facilities dedicated to helping members achieve fitness goals and enjoy their experience	Wellness and Fitness Services	🇺🇸 Orange	1,052	1987
14	SA Recycling sarecycling.com A leading scrap metal recycler in North America with operations in ferrous and non-ferrous metal recycling, as well as green waste and fiber recycling	Renewables & Environment	🇺🇸 Orange	1,039	2007
15	Ultimate Staffing ultimatestaffing.com A leading staffing company providing temporary, temporary-to-hire, direct hire, and payrolling services, with a focus on creating remarkable experiences for clients and candidates	Staffing and Recruiting	🇺🇸 Orange	952	1994
16	Orange County co.orange.tx.us A company dedicated to serving Orange County residents and visitors with honesty, transparency, and citizen engagement, to improve quality of life	Government Administration	🇺🇸 Orange	902	n/a
17	Orange County Transportation Authority octa.net Primary transportation agency managing bus, rail, toll lanes, freeway improvements, road grants, vanpool subsidies, and rideshare options in Orange County.	Truck Transportation	🇺🇸 Orange	780	1991
18	Santiago Canyon College sccollege.edu Public community college providing academic transfer, career education, personal/professional development courses, and customized training for businesses in Anaheim Hills, Orange, Tustin, and Villa Park	Higher Education	🇺🇸 Orange	654	2000
19	Westways Staffing Services, Inc westwaysstaffing.com A leading nursing registry in the US focused on providing personalized care, career advancement, and premium staffing solutions for healthcare professionals	Staffing and Recruiting	🇺🇸 Orange	600	1992
20	The Word & Brown Companies wbcompanies.com A company dedicated to simplifying access to health insurance choices for businesses, employees, and individuals through group and individual coverage, private health exchanges, and prescription drug discounts	Insurance	🇺🇸 Orange	592	1984
21	Colony Hardware colonyhardware.com The company provides tools, equipment, supplies, safety products, rental, and repair services to the construction and industry sectors, emphasizing quality, service, and customer satisfaction	Construction	🇺🇸 Orange	544	n/a
22	KDC Construction kdcconstruction.com A commercial construction company founded in 1996, specializing in Remodels, Tenant Improvements, New Builds, Program Management, and Multi-Site Rollouts in California and neighboring states	Construction	🇺🇸 Orange	507	1996
23	WorkCare, Inc.workcare.com A US-based company specializing in occupational health, wellness, and absence management They provide total worker health solutions and resources for various industries	Hospitals and Health Care	🇺🇸 Orange	473	1984
24	City of Orange, California cityoforange.org Old Towne Orange, CA is a beloved downtown area with antique shops, galleries, and restaurants, known for its historic Plaza Park Population: 138,640	Government Administration	🇺🇸 Orange	468	1888
25	AO aoarchitects.com Architectural firm established in 1974 specializing in Retail, Residential, and Mixed-Use projects with 50 years of experience and industry leadership	Architecture and Planning	🇺🇸 Orange	452	1974
26	SC Fuels scfuels.com A leading petroleum distributor servicing over 11,000 customers with gasoline, diesel, and alternative fuels in 15 western states since 1930	Oil and Gas	🇺🇸 Orange	435	1930
27	My Mountain Mover mymountainmover.com This company provides businesses with expert remote virtual talent to improve performance, save time, and reduce costs compared to in-house staff	Outsourcing and Offshoring Consulting	🇺🇸 Orange	391	2020
28	Care Ambulance Services, Inc.falck.us Provider of emergency and non-emergency ambulance services in Orange County and Los Angeles County, focusing on excellent patient care and customer service	Hospitals and Health Care	🇺🇸 Orange	386	1969
29	Formerly UIL Holdings (now part of Avangrid)avangrid.com A diversified energy and utility company with operations in 25 states, including regulated utilities, electricity generation, and natural gas storage	Utilities	🇺🇸 Orange	382	n/a
30	St. Paul's Lutheran Church and School splsorange.org A long-standing Lutheran school in Orange County offers a safe, diverse, and academically excellent environment with state-of-the-art facilities and a challenging curriculum	Education Administration Programs	🇺🇸 Orange	376	1907
31	The Raymond Group raymondgroup.com Leading wall and ceiling contractor in California and Nevada, offering interior and exterior services with a focus on teamwork and work/life balance	Construction	🇺🇸 Orange	330	1936
32	Roth Staffing rothstaffing.com Provides staffing services including temporary, direct hire, executive search, and large-scale workforce solutions across various sectors like administrative, finance, IT, and legal, in nearly 100 U.S. markets.	Staffing and Recruiting	🇺🇸 Orange	329	1994
33	Kerr Corporation kerrdental.com Manufactures and distributes premiere dental consumables globally, providing solutions that enhance oral health through esthetic dentistry and clinician input.	Medical Equipment Manufacturing	🇺🇸 Orange	316	1891
34	GGG Demolition, Inc.gggdemo.com A woman-owned demolition and hazardous waste remediation company in Orange, California, specializing in federal, commercial, educational, and industrial projects	Construction	🇺🇸 Orange	310	2014
35	NAVCO navco.com A national electronic security integrator offering video recording, alarms, biometric identification, access control, system design, remote monitoring, and equipment rental services	Security and Investigations	🇺🇸 Orange	307	1971
36	Marina Landscape marinaco.com Award-winning landscape contractor specializing in construction, maintenance, and design, serving public and private clients with state-of-the-art commercial landscaping services for over 50 years	Construction	🇺🇸 Orange	225	1971
37	Family Connections, Inc.familyconnectionsnj.org A non-profit organization providing services to help individuals and families cope with trauma, mental illness, addiction, domestic violence, and child abuse	Individual and Family Services	🇺🇸 Orange	215	1879
38	DMG Corporation dmghvac.com An independent sales agency offering custom-designed HVAC equipment including air handling units, chillers, cooling towers, and energy recovery systems	Construction	🇺🇸 Orange	182	1967
39	Sweet Factory sweetfactory.com A retail business specializing in bulk candy offerings, with high-traffic locations, fresh products, and knowledgeable staff delivering a unique customer experience	Retail	🇺🇸 Orange	182	n/a
40	Court Appointed Special Advocates of Orange County (CASA OC)casaoc.org Providing advocacy and support for youth in the child welfare system to ensure their safety, permanency, and well-being through trained volunteers	Non-profit Organizations	🇺🇸 Orange	174	1985
41	LCPtracker, Inc.lcptracker.com Provider of data tracking software for construction projects Ensures Davis-Bacon compliance, workforce demographic analysis, and supports construction workforce programs for career advancement	Software Development	🇺🇸 Orange	173	2001
42	Chapman University Fowler School of Law chapman.edu A competitive and personalized legal education institution offering practical skills training, clinical programs, and networking opportunities for law students	Higher Education	🇺🇸 Orange	172	1995
43	Escape LLC veracityvs.com Veracity facilitates verification between EdTech companies and educators with a trustworthy, merit-based system to bridge the gap effectively	Education Administration Programs	🇺🇸 Orange	163	n/a
44	Horizon Oxygen and Medical Equipment horizonoxygen.com A durable medical equipment company in California focused on providing excellent care, great service, and positive relationships to patients and their families	Hospitals and Health Care	🇺🇸 Orange	162	2004
45	Solari Enterprises, Inc.solari-ent.com A full-service property management organization specializing in multifamily affordable housing in California, serving families, seniors, special needs, and commercial tenants	Real Estate	🇺🇸 Orange	161	1987
46	Max Muscle Sports Nutrition maxmusclefranchise.com Manufacturer of branded nutritional supplements in the United States, distributed through a franchised retail store system, with a focus on "Made in USA" products and science-based formulations	Wellness and Fitness Services	🇺🇸 Orange	158	1991
47	Adams & Martin Group adamsmartingroup.com A leading legal staffing firm specializing in placing professionals in law firms and corporate legal departments, committed to creating remarkable experiences	Staffing and Recruiting	🇺🇸 Orange	152	1994
48	CashCall, Inc.cashcall.com A premier lender headquartered in Orange, California, offering fast and hassle-free personal loans for one-time purchases and debt consolidation with a focus on exceptional customer service	Financial Services	🇺🇸 Orange	151	2003
49	Mission Plasticos missionplasticos.org The company provides reconstructive plastic surgical training and care to underserved individuals globally, aiming to alleviate suffering and advance the field	Philanthropic Fundraising Services	🇺🇸 Orange	149	1998
50	Duphil, Inc.duphil.com A solutions-based pipeline contractor specializing in mainline and environmentally sensitive area construction, integrity assessment, station construction, and more	Oil and Gas	🇺🇸 Orange	146	1968
51	Cloeren Incorporated cloeren.com A world leader in plastics machinery, specializing in customized coextrusion feedblocks, dies, and accessories for higher process yield and quality	Plastics Manufacturing	🇺🇸 Orange	138	1975
52	Ledgent Technology ledgenttech.com An IT staffing company providing qualified professionals in various roles nationwide, focused on creating remarkable experiences and making life better for people	Staffing and Recruiting	🇺🇸 Orange	126	1994
53	Ville d'Orange ville-orange.fr Ancient city in Provence with UNESCO monuments, renowned wine region, military presence, major transport hub, and vibrant cultural and musical events.	Government Administration	🇺🇸 Orange	54	n/a
54	Bodhi Leaf Coffee Traders bodhileafcoffee.com Company imports, roasts, and sells specialty coffee. They build relationships with farmers, ensuring high-quality beans from farms to customers' cups.	Food and Beverage Services	🇺🇸 Orange	51	2009
55	APM Manufacturing anaheimprecision.com Specializing in design, development, and fabrication of components and assemblies, this vertically integrated manufacturing business serves diverse industries with a focus on quality and customer service	Aviation and Aerospace Component Manufacturing	🇺🇸 Orange	37	1986
56	Tru Bru Organic Coffee trubrucoffee.com A restaurant company located in Orange, California, that specializes in serving organic coffee to its customers	Restaurants	🇺🇸 Orange	26	2014
57	Anaheim Precision Manufacturing anaheimprecision.com Manufacturing business specializing in design, development, and fabrication of components and assemblies for various industries with a focus on quality and customer service	Aviation and Aerospace Component Manufacturing	🇺🇸 Orange	21	n/a
58	IDOC Dental Lab idocdentallab.com A customer-centric dental lab focused on making patients happy, empowering staff, and fostering entrepreneurship in the dental industry	Hospitals and Health Care	🇺🇸 Orange	20	n/a
59	EVEREST ISOLATION everest-isolation.fr Local RGE-certified company in Orange specializing in insulation services with over 20 years of experience supporting customers.	Construction	🇺🇸 Orange	19	1999
60	Label Impressions Inc.labelimpressions.com Leader in flexible packaging and labels manufacturing, providing cost-effective solutions with flexographic and digital printing capabilities for various packaging needs	Printing Services	🇺🇸 Orange	15	1989
61	South Coast Computers sccomputers.com An IT Outsourcing company founded in 1988, providing state-of-the-art hardware and software solutions to over 70 clients in Southern California	IT Services and IT Consulting	🇺🇸 Orange	11	1988
62	Dean's Beans Organic Coffee Company deansbeans.com A social change organization using specialty coffee to empower farmers and foster positive economic, social, and environmental change in coffee-producing regions worldwide	Food and Beverage Services	🇺🇸 Orange	6	1993

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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 Oct 24, 2026.

The same list elsewhere in United States

The largest companies in the United States 91,669
The largest companies in California 12,813
The largest companies in New York State 10,485
The largest companies in Texas 8,086
The largest companies in Florida 4,945
The largest companies in Illinois 4,175
The largest companies in Pennsylvania 3,110
The largest companies in Massachusetts 3,093
The largest companies in Georgia 2,632
The largest companies in Ohio 2,618
The largest companies in New Jersey 2,569
The largest companies in Virginia 2,503
The largest companies in Michigan 2,346
The largest companies in North Carolina 2,174
The largest companies in Alabama 1,806
The largest companies in Washington State 1,785
The largest companies in Colorado 1,774
The largest companies in Minnesota 1,700
The largest companies in Maryland 1,527
The largest companies in Wisconsin 1,482
The largest companies in New York 6,920
The largest companies in San Francisco 2,030
The largest companies in Houston 1,791
The largest companies in Chicago 1,668