The 26 largest companies in Temecula (2026 list)

#	Company	Industry	Headquarters	Employees	Founded
1	Freedom Forever freedomforever.com Residential solar installation partner with sales companies. Offers 25-year production guarantee, operates in 36 states. Rapid growth, diverse professionals, competitive benefits.	Solar Electric Power Generation	🇺🇸 Temecula	1,857	2011
2	Pechanga Resort Casino pechanga.com Luxurious resort and casino in Temecula Valley with AAA Four Diamond Award-winning accommodations, world-class gaming, dining options, golf course, spa, entertainment, and nightlife	Gambling Facilities and Casinos	🇺🇸 Temecula	1,707	n/a
3	FFF Enterprises fffenterprises.com Distributes specialty pharmaceuticals and biologics to healthcare systems, pharmacies, and alternate care sites. Provides infusion pharmacy services and inventory management programs.	Hospitals and Health Care	🇺🇸 Temecula	1,581	1988
4	TEMECULA VALLEY UNIFIED SCHOOL DISTRICT tvusd.k12.ca.us A public K-12 educational organization located in Temecula, California, providing education and support to students in the community	Primary and Secondary Education	🇺🇸 Temecula	1,238	n/a
5	Nikkiso Clean Energy & Industrial Gases nikkisoceig.com A global leader in cryogenic technology, specializing in designing and manufacturing innovative products for clean energy and industrial gases applications worldwide	Oil and Gas	🇺🇸 Temecula	865	n/a
6	Wedgewood Weddings & Events wedgewoodweddings.com Operate and manage over 50 personalized wedding and event venues across the US, providing dedicated planning teams and customizable packages.	Hospitality	🇺🇸 Temecula	781	1986
7	Springs Charter Schools springscs.org Empowering students through personalized learning programs, parent involvement, diverse curriculum, and community engagement in Southern California Offers homeschooling and blended models	Primary and Secondary Education	🇺🇸 Temecula	737	2000
8	Temecula Valley Hospital swhtemeculavalley.com A 140-bed acute care hospital in Temecula, California, offering major specialty services including open heart surgery and neuroscience, designated as a STEMI Receiving Center and Stroke Ready Hospital	Hospitals and Health Care	🇺🇸 Temecula	555	n/a
9	Southwest Healthcare southwesthealthcare.com Acute-care facilities with specialized pediatric and obstetric services, including a trauma center and NICU, offering comprehensive emergency medical services and surgeries	Hospitals and Health Care	🇺🇸 Temecula	509	n/a
10	Perceptyx perceptyx.com Leader in Employee Experience transformation, providing listening, analytics, and behavioral science solutions for global enterprises to drive business impact and organizational change	Software Development	🇺🇸 Temecula	383	2003
11	CSMC csmci.com A leading provider of back office services to charter schools, supporting over 150 schools nationwide with a focus on empowering education leaders	Education Administration Programs	🇺🇸 Temecula	352	2000
12	River Springs Charter School springscs.org A tuition-free, personalized learning public charter school serving TK-12th grade students in Riverside County, California, providing innovative learning options both in-person and online	Primary and Secondary Education	🇺🇸 Temecula	225	2006
13	Horizon Solar Power horizonsolarpower.com A leading solar power provider in Southern California, offering residential and commercial solar systems with top-notch service and a focus on customer satisfaction	Renewable Energy Semiconductor Manufacturing	🇺🇸 Temecula	191	2008
14	CULTURE PARTNERS culturepartners.com This company activates and empowers organizations worldwide to achieve results by leveraging the transformative power of culture	Business Consulting and Services	🇺🇸 Temecula	162	n/a
15	South Coast Winery Resort & Spa southcoastwinery.com Luxurious resort and spa with a working winery in Temecula Wine Country offering relaxing vacations, wine tasting tours, events, and dining experiences	Hospitality	🇺🇸 Temecula	149	2003
16	HelioPower, Inc.heliopower.com An integrated energy solutions company in the Western US, specializing in reducing energy costs through renewable energy, demand side management, and customized offerings	Renewables & Environment	🇺🇸 Temecula	47	2001
17	Financial Accounting Services, Inc.taxmanfred.com A comprehensive company offering accounting, tax, and investment advisory services to individuals and businesses	Accounting	🇺🇸 Temecula	42	1995
18	Divergent Marketing Solutions Inc.divergentmktgsolutions.com A rapidly growing marketing firm focused on delivering top-notch services to clients and supporting the success of marketing associates	Advertising Services	🇺🇸 Temecula	36	n/a
19	Optiforms, Inc.optiforms.com Leader in precision optical components manufacturing for various industries Expertise in design innovation and product development, exceeding client expectations	Defense and Space Manufacturing	🇺🇸 Temecula	32	1984
20	NO BAD DAYS®nobaddays.com This company offers branded products promoting an optimistic way of life, including custom clothing and apparel sold online and in various locations	Retail Apparel and Fashion	🇺🇸 Temecula	30	1986
21	Rev.1 Engineering® - A subsidiary of Asahi Intecc rev1engineering.com A leading provider of innovative medical device solutions, specializing in developing novel technologies for interventional therapies, with a proven track record of efficient and rapid development	Medical Equipment Manufacturing	🇺🇸 Temecula	27	2007
22	Strachota Insurance Agency strachota.com Providing innovative risk management solutions since 1931 with a focus on building relationships, offering value, and personalized insurance advice	Insurance	🇺🇸 Temecula	17	n/a
23	Konabos konabos.com A full-service agency specializing in digital transformation for enterprise businesses, offering customized solutions, strategic planning, transparent communication, and client-focused values	IT Services and IT Consulting	🇺🇸 Temecula	15	2017
24	Superior Packaging Concepts, Inc.superiorpackagingconcepts.com Company providing custom packaging, warehouse supplies, and inventory management solutions to businesses nationwide with a focus on efficiency and customer satisfaction	Packaging and Containers Manufacturing	🇺🇸 Temecula	5	2000
25	My Guys Home Services This company specializes in home energy efficiency solutions such as low flow toilets, solar water heaters, and water efficient faucets, with stellar customer service since 1977	Consumer Services	🇺🇸 Temecula	5	n/a
26	Promethean Biofuels prometheanbiofuels.com A cooperative California corporation focused on producing alternative energy biofuels for employee-owners and consumer-members in response to environmental concerns	Renewables & Environment	🇺🇸 Temecula	4	n/a

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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