| # | Company | Employees |
|---|---|---|
| 1 |
University of Colorado Bouldercolorado.edu
A dynamic community of scholars and learners at a Colorado university, known for its spectacular campus and academic excellence |
15,809 |
| 2 |
Boulder Valley School Districtbvsd.org
A school district in the Rocky Mountains area with 56 schools, 30,000 students, and 4000 employees dedicated to academic excellence and student success |
2,779 |
| 3 |
Self Made Self LLCselfmadeself.com
This company helps service-based small business owners communicate effectively to attract their ideal clients, improve services, and build confidence for success |
2,667 |
| 4 |
Congruexcongruex.com
A leading provider of end-to-end network design and build services, enabling modern world operations and facilitating connectivity across various sectors |
2,291 |
| 5 |
Boulder Community Healthbch.org
An integrated regional health system in Boulder and Broomfield counties, known for clinical excellence in heart, neurosurgery, stroke, orthopedic, and cancer care |
1,779 |
| 6 |
Boulder Countybouldercounty.gov
Local government providing public services, promoting sustainability, managing open spaces, and fostering community health and innovation for residents. |
1,566 |
| 7 |
CrossFit, LLCcrossfit.com
This company is a global leader in health and fitness, offering education, training, and workouts through a network of affiliated gyms worldwide |
1,549 |
| 8 |
City of Boulderbouldercolorado.gov
Provides municipal services, supports local businesses, promotes outdoor recreation, manages transportation, and fosters academic and technological resources in Boulder. |
1,530 |
| 9 | 1,376 | |
| 10 |
BI Incorporatedbi.com
Provides electronic monitoring technologies and services for government agencies to supervise individuals on parole, probation, pretrial, and immigration cases. |
1,252 |
| 11 |
EMAenterprisemanagement.com
Leading independent industry analyst and consulting firm dedicated to the IT Management market, providing objective, comprehensive insight into business value. |
1,208 |
| 12 |
CrossFitcrossfit.com
A global fitness regimen involving varied high-intensity movements, incorporating elements from various exercises and promoted as both a philosophy and competitive sport |
1,024 |
| 13 |
Corza Medicalcorza.com
Provides medical devices and biosurgery products to surgeons, teams, distributors, and OEM partners, with a focus on surgical sutures, ophthalmic instruments, and sealant matrix. |
970 |
| 14 |
Aspect Softwareaspect.com
Alvaria, formed from Aspect Software and Noble Systems, simplifies customer engagement with large-enterprise contact center software supporting billions of consumer interactions worldwide |
964 |
| 15 |
Datavaildatavail.com
It offers technology consulting, implementation, and managed services, focusing on database management, analytics, application development, and cloud infrastructure solutions. |
898 |
| 16 |
NSF NCAR - The National Center for Atmospheric Researchncar.ucar.edu
Advancing research and services in meteorology, climate science, environmental science, and STEM education, fostering collaboration and understanding of Earth's systems |
897 |
| 17 |
Outsideoutsideonline.com
The company is a destination for active lifestyle enthusiasts, offering media, digital, and technology platforms for outdoor and healthy living content |
793 |
| 18 |
Yes Energyyesenergy.com
Yes Energy provides accurate and timely data, comprehensive tools, and expert guidance to help traders and power companies navigate the complex power market successfully |
675 |
| 19 |
University of Colorado Boulder - Leeds School of Businesscolorado.edu
A leading business school in Boulder, Colorado offering innovative research, Colorado MBA and Master's Programs, and fostering principled leaders driving economic growth |
660 |
| 20 |
UCAR - The University Corporation for Atmospheric Researchucar.edu
Specializing in meteorology, atmospheric science, climate research, and STEM education, we provide research facilities and services for the geosciences community |
599 |
| 21 |
Au Pair Internationalaupairint.com
Provider of cultural exchange childcare program, connecting families with international au pairs for quality and trustworthy care, supported by US Department of State designation |
593 |
| 22 |
Elevations Credit Unionelevationscu.com
Member-owned financial institution in Colorado's Front Range offering top workplace benefits, diversity awards, and leading credit union mortgage lending in the state |
591 |
| 23 |
Uplightuplight.com
Energy technology partner for providers and clean energy ecosystem, connecting customers to decarbonization goals, saving energy, lowering costs, and streamlining clean energy transition |
567 |
| 24 |
GREASE MONKEYgreasemonkey.com
Automotive company located in Boulder, Colorado specializing in car maintenance services such as oil changes, tire rotations, and fluid top-ups |
556 |
| 25 |
Unreasonableunreasonablegroup.com
An international company supporting growth-stage entrepreneurs, connecting investors with exclusive deals, and partnering to address global issues through profit-driven solutions |
519 |
| 26 |
Naropa Universitynaropa.edu
A private liberal arts institution in Boulder, Colorado, offering undergraduate and graduate degree programs with a focus on contemplative education |
516 |
| 27 |
Laboratory for Atmospheric and Space Physicslasp.colorado.edu
Researches space science, weather, and planets; develops instruments and small satellites; explores habitable worlds with students and partners. |
502 |
| 28 |
Smoker Friendlysmokerfriendly.com
America's largest retailer of cigarettes and tobacco products, with over 800 stores nationwide, offering a wide range of products and expanding reach |
498 |
| 29 |
JILAjila.colorado.edu
A leading physics research institute formed through a collaboration between University of Colorado Boulder and NIST Pioneering scientific discoveries |
471 |
| 30 |
Clinica Family Health & Wellnessclinica.org
This organization provides comprehensive mental health services to residents of Boulder and Broomfield counties, regardless of ability to pay |
460 |
| 31 |
Ricoh Infoprint Solutionsinfoprint.com
A leading provider of digital production output solutions and professional services, specializing in printing environments and offering hardware, software, and professional services solutions |
454 |
| 32 |
University of Colorado Boulder College of Engineering & Applied Sciencecolorado.edu
Higher education institution offering a wide range of engineering and applied science undergraduate and graduate programs with selective admissions standards Founded in 1893 |
451 |
| 33 |
self-employed caregivertomsundrophotography.com
Specializing in product photography and portraits, this company offers high-quality images for businesses and individuals looking to capture their products and personalities |
442 |
| 34 |
Match Marketing Grouppubliclabelagency.com
Match Marketing Group fosters collaboration between marketing agencies to drive client growth by creating meaningful interactions and inspiring audiences |
431 |
| 35 |
Techstars Startup Weekendtechstars.com
Educating and inspiring entrepreneurs globally through thousands of events in numerous cities, driven by passionate organizers and volunteers. Over 410K entrepreneurs educated. |
415 |
| 36 |
Envedaenveda.com
This company leverages nature's molecules from medicinal plants to develop innovative drugs for difficult diseases using knowledge graphs and machine learning |
389 |
| 37 |
dopmadebydop.com
Innovative gadget simplifying content consumption and creation on smart devices for a seamless user experience |
388 |
| 38 |
Spectra Logicspectralogic.com
Specializing in data storage solutions for long-term preservation, Spectra Logic innovates storage technologies for global industries, enabling affordable data management |
385 |
| 39 |
InTrust Domainsitdomainnames.info
An online platform offering instant delivery of affordable domains, with great customer service and options for price negotiation Bonded transactions for security |
375 |
| 40 |
Vytalogy Wellnessvytalogy.com
A California-based company creates high-quality wellness products through science and quality ingredients, making a transformative impact on consumers' lives |
369 |
| 41 |
Aurora Organic Dairyauroraorganic.com
Dedicated to organic dairy production, from farm to carton, supplying retail brand products across the U.S. and prioritizing animal welfare, employee well-being, and environmental stewardship. |
368 |
| 42 |
Flatirons Solutionsflatironssolutions.com
Aerospace and defense industry leader providing technical content and maintenance task management solutions to optimize publications process and increase operational efficiencies |
353 |
| 43 |
ISET Intisetint.org
The company facilitates dialogue and knowledge exchange to address social-environmental challenges, promoting resilient, sustainable development through collaboration across geographic and governance scales |
334 |
| 44 |
Streamgetstream.io
This company specializes in providing APIs and SDKs for real-time chat, moderation, video, audio, and activity feed features, with a focus on scalability and developer flexibility |
332 |
| 45 |
Boulder Medical Centerbouldermedicalcenter.com
Providing personalized and compassionate primary and specialty healthcare services in Boulder County and surrounding areas since 1949 |
314 |
| 46 | 312 | |
| 47 |
School.joekattan.com
This company helps brands and organizations expand their reach by implementing purpose-led strategies and creating human-centric experiences |
285 |
| 48 |
Midwife Internationalmidwifeinternational.org
Empowering midwives worldwide to provide respectful, quality care, ensuring every woman has access to well-trained support during childbirth |
239 |
| 49 |
Pharmaca Integrative Pharmacywalgreens.com
Health and beauty retailer providing natural products and expert guidance from a team of integrative health professionals in a spa-like environment |
233 |
| 50 |
Scout Clean Energyscoutcleanenergy.com
Renewable energy developer and operator based in Boulder, Colorado, with a large portfolio of wind, solar, and storage projects nationwide Partnered with Brookfield Renewable |
225 |
| 51 |
KJUS | Worldwidekjus.com
Designs and produces high-performance, innovative sports apparel that enhances outdoor experiences, pushing beyond traditional expectations and quality standards. |
221 |
| 52 |
Data Analyticsdataanalyticssolutions.com
A leader in cloud and analytics services, specializing in data integration, business intelligence, data warehousing, architecture, modeling, and analytics with a focus on innovation |
214 |
| 53 |
formationenvformationenvironmental.com
Partner-owned environmental consulting firm providing scientific, technical, and strategic expertise in water resources, environmental engineering, and remote sensing to various sectors. |
200 |
| 54 |
St Julien Hotel & Spastjulien.com
Award-winning hotel and spa in downtown Boulder offering four-star service, luxurious accommodations, gourmet dining, eco-friendly practices, and stunning mountain views |
195 |
| 55 |
Vero Networksveronetworks.com
They specialize in building and operating fiber networks to offer fast and reliable Internet and data connectivity to schools, businesses, and homes |
185 |
| 56 |
Rush Bowlsrushbowls.com
Creating all-natural blended fruit bowls and smoothies that promote well-being, with a focus on honest ingredients and pure energy for a wholesome experience |
185 |
| 57 |
NDPparsons.com
A leading engineering firm specializing in net-centric solutions, cybersecurity, systems integration, and technology development for military and commercial applications worldwide |
184 |
| 58 |
PopSocketspopsockets.com
A global brand creating phone accessories to empower users, support positive impact initiatives, and prioritize sustainability and employee satisfaction |
171 |
| 59 |
Yoga Journalyogajournal.com
A leading authority on yoga and the yoga lifestyle, offering expert information on living a healthier, happier life both on and off the mat |
168 |
| 60 |
Connexallconnexall.com
Innovative healthcare technology company crafting tailored solutions for seamless, collaborative, and empathetic healthcare delivery, enhancing patient care and staff satisfaction |
167 |
| 61 |
University of Colorado Lockheed Martin Engineering Management Programcolorado.edu
Prepares engineers and technical professionals for leadership roles through flexible graduate and undergraduate programs in engineering management |
166 |
| 62 |
Leave No Tracelnt.org
A non-profit organization promoting Leave No Trace principles worldwide through programs, education, and stewardship for a sustainable outdoor future |
165 |
| 63 |
Boulder County Sheriff's Officebouldercounty.gov
This company provides efficient and effective public safety services in Boulder County with a focus on character, competence, and open communication |
164 |
| 64 |
Brewers Associationbrewersassociation.org
A not-for-profit trade association supporting US brewers, homebrewers, allied trade members, and the craft beer community through publications and communication |
163 |
| 65 |
Edgewise Therapeuticsedgewisetx.com
A biopharmaceutical company developing innovative treatments for muscular dystrophies and serious cardiac conditions |
161 |
| 66 |
Frasierfrasiermeadows.org
A mission-driven senior living community in Boulder, Colorado offering a continuum of care, wellness amenities, and generous employee benefits including tuition reimbursement |
161 |
| 67 |
WorkInProgresswipbdr.com
This company is a hybrid of an ad agency and innovation shop, helping companies act, innovate, and create to showcase their purpose through powerful advertising |
160 |
| 68 |
BlogMuttverblio.com
This company provides high-quality content creation services for businesses and agencies, utilizing a network of over 3,000 US-based writers |
159 |
| 69 |
Fairview High Schoolfah.bvsd.org
Fairview High School in Boulder, CO provides education services for students in the United States, focusing on academic excellence and personal growth |
154 |
| 70 |
Ascend Analyticsascendanalytics.com
An innovative software and consulting firm specializing in renewable energy solutions, with industry-leading decision software driving adoption of clean energy |
153 |
| 71 |
Sage V Foodssagevfoods.com
A food manufacturer specializing in rice based ingredients with a focus on both large food companies and the retail sector |
153 |
| 72 |
Space Science Institutespacescience.org
A nonprofit organization fostering integrated scientific research and education programs in space physics, earth science, planetary science, and astrophysics |
147 |
| 73 |
Terrapinterrapincarestation.com
Cultivator, processor, and provider of high-quality medical and retail cannabis products, founded in 2009 in Boulder, Colorado Expanding rapidly |
146 |
| 74 |
AlsoEnergyhome.alsoenergy.com
A leader in edge-to-cloud portfolio management solutions for clean energy assets, empowering businesses to scale, optimize, and improve performance |
144 |
| 75 |
Nite Ize, Inc.niteize.com
This company is dedicated to creating innovative problem-solving products with a focus on quality, performance, customer satisfaction, and environmental responsibility |
124 |
| 76 |
JUWI Inc.juwiamericas.com
A developer, EPC contractor, and operator of large-scale renewable energy generation facilities globally, with a focus on the North American market |
118 |
| 77 |
Spyder Active Sportsspyder.com
Design and manufacture of innovative, technologically advanced ski apparel and accessories for elite athletes and modern consumers worldwide. |
106 |
| 78 |
Frasca Hospitality Group
The company focuses on providing world-class hospitality through genuine service, elevated cuisine, and curated wine & spirits lists at their restaurants in Boulder and Denver |
96 |
| 79 |
Orbit Faborbitfab.com
The company envisions a thriving in-space market by providing satellite propellant in Earth orbit for expanded operational potential and business model flexibility |
95 |
| 80 |
ADVANCE Energy (Acquired by The AES Corporation)advanceenergyllc.com
Energy generation and infrastructure development firm specializing in utility-scale wind, solar, and transmission projects, providing project management, financing, and development services |
87 |
| 81 |
Independent Powersolarips.com
A provider of premium solar+storage systems for residential and commercial customers, focusing on innovation, energy resilience, sustainability, and community impact |
85 |
| 82 |
Bonuslybonusly.com
It provides an employee recognition solution that enhances performance, fosters collaboration, and simplifies HR processes for organizations globally. |
84 |
| 83 |
Foundryfoundry.vc
A venture capital firm based in Boulder, Colorado, managing over $30Bn for investors, with a network of over 75 portfolio companies and 40 partner funds |
73 |
| 84 | 71 | |
| 85 |
OZO Coffee Roastersozocoffee.com
A leader in specialty coffee, focused on quality, sustainability, and community engagement, roasting fresh batches weekly for optimal flavor and integrity |
67 |
| 86 |
Tensentrictensentric.com
Specializing in medical device design and manufacturing, we deliver tailored solutions from concept to clinical trials with experienced engineers and ISO13485 certification |
60 |
| 87 |
West Logisticswestlogistics.com
A logistics company offering competitive pricing on transportation solutions with a wide network of carriers for LTL, FTL, ocean, rail, and small parcel shipments |
48 |
| 88 |
Peregrine Energy Solutions, LLCperegrineenergysolutions.com
The company operates a portfolio of clean renewable assets with a focus on utility-scale energy storage in North America |
44 |
| 89 |
Travertinetravertinetech.com
A Boulder-based company specializing in carbon dioxide removal and producing critical elements through a cost-effective, sustainable approach involving sulfuric acid and green hydrogen |
42 |
| 90 |
SCARPA North Americascarpa.com
A global performance footwear brand founded in 1938, specializing in mountain sports like skiing, mountaineering, rock climbing, backpacking, and hiking |
33 |
| 91 | 30 | |
| 92 |
Radiometricsradiometrics.com
Global leader in ground-based remote sensing solutions, offering thermodynamic and wind profiling instruments integrated into full profiling systems for atmospheric monitoring and prediction |
30 |
| 93 |
Trail Ridge Powertrailridgepower.com
The company provides energy management and generation solutions for commercial and industrial clients looking for portfolio-wide services |
27 |
| 94 |
Utilligentutilligent.com
A consultancy firm specializing in guiding utilities in delivering energy, completing operational initiatives, and offering services in customer engagement, utility operations, and smart infrastructure |
26 |
| 95 |
Nalpeiron Growth Platform for Software & SaaSnalpeiron.com
An enterprise-class software monetization platform offering cloud-based licensing solutions for software and SaaS companies, helping them accelerate product launches and control entitlements |
24 |
| 96 |
Wall Street On Demandwallst.com
Designs, develops, and hosts custom websites, reports, and tools for the financial services industry, focusing on user-centric information products |
21 |
| 97 |
Bomberbomberwebdevelopment.com
This company specializes in developing custom cloud software solutions for enterprises, including TV Everywhere, Smart TVs, APIs, media management, and design/UI/UX |
21 |
| 98 |
Matador Equipmentmatadorequipment.com
The company engineers high-performing travel equipment that enables exploration without limits, with a focus on innovation, design, and pushing industry standards |
19 |
| 99 |
zavviezavvie.com
A real estate technology company offering a Power Buyer program with AI technology to help brokerages and mortgage companies unlock deals |
19 |
| 100 |
Sunrise Capital Partners LLCsnrzcptl.com
An innovative alternative asset management firm with over 40 years of experience, offering proprietary investment strategies to clients |
19 |
Turn this list into pipeline
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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 9, 2026.
The same list elsewhere in United States
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