| # | Company | Employees |
|---|---|---|
| 1 |
Amazonamazon.com
An e-commerce giant offering a vast selection of products, convenient shopping experiences, and fast delivery, connecting buyers with a wide range of sellers |
1,541,000 |
| 2 |
Costco Wholesalecostco.com
Global warehouse club retailer operating in multiple countries, focusing on quality, ethics, employee success, and customer service excellence. |
304,000 |
| 3 |
Microsoftmicrosoft.com
Develops and sells software, hardware, and cloud services, including the Windows operating system and Office suite, to improve productivity and digital experiences |
233,562 |
| 4 |
Starbucksstarbucks.com
The company focuses on creating positive change in the world by providing a welcoming environment for employees to grow their careers and community connections |
190,713 |
| 5 |
Amazon Web Services (AWS)amazon.com
A global cloud computing provider offering scalable, reliable, and cost-effective infrastructure services to businesses worldwide, eliminating the need for capital infrastructure expenses |
147,090 |
| 6 |
T-Mobilecareers.t-mobile.com
Leading US wireless provider delivering advanced 4G LTE and nationwide 5G networks, prioritizing customer value, service excellence, and innovation in Bellevue, Washington |
96,232 |
| 7 |
eXp Realtyexprealty.com
Real estate company focused on innovation and empowering agents to transform the future of property buying and selling experiences. |
50,266 |
| 8 |
Avanadeavanade.com
Innovative provider of digital, cloud, and advisory services within the Microsoft ecosystem, focused on making a human impact, solving challenges, and promoting sustainability and diversity |
50,000 |
| 9 |
Nordstromnordstrom.com
Empowering employees to achieve success through hard work, leadership, and dedication to customer service Committed to environmental sustainability and community support |
48,381 |
| 10 |
University of Washingtonwashington.edu
Public research university offering diverse educational programs, extensive campuses, cultural activities, and high-quality medical care, engaging with communities. |
32,106 |
| 11 |
Expedia Groupcareers.expediagroup.com
A tech company in the travel industry creating unforgettable experiences, empowering travelers worldwide, and committed to inclusivity and accessibility |
21,829 |
| 12 | 20,860 | |
| 13 |
Providence Health & Servicesprovidence.org
A healthcare organization focused on providing compassionate care through a network of hospitals, clinics, and services across multiple states |
20,360 |
| 14 |
PACCARpaccar.com
Global leader in designing, manufacturing, and supporting premium trucks, diesel engines, and financial services, with a focus on environmental responsibility and innovation |
19,393 |
| 15 |
Expeditorsexpeditors.com
Provides customized supply chain solutions including freight forwarding, customs clearance, cargo insurance, and distribution through a global network. |
19,116 |
| 16 |
Amazon Businessbusiness.amazon.com
Simplified procurement platform offering extensive product selection and innovative tools to meet diverse organizational purchasing needs at any growth stage. |
15,896 |
| 17 |
Alaska Airlinesalaskaair.com
Passenger airline providing exceptional service through dedicated employees, focusing on safety, customer care, and community engagement. |
13,396 |
| 18 |
MultiCare Health Systemjobs.multicare.org
Largest community-based health system in Washington with 13 hospitals, 300+ care locations, serving Pacific Northwest with dedicated healthcare professionals. |
12,817 |
| 19 |
TrueBlue Inc.trueblue.com
Staffing, recruiting, and workforce management services for diverse industries, providing reliable and efficient workforce solutions daily. |
12,447 |
| 20 |
Blue Originblueorigin.com
Building affordable access to space and utilizing its resources to benefit Earth Developing reusable rocket engines, launch vehicles, in-space systems, and lunar landers |
12,048 |
| 21 | 11,723 | |
| 22 |
Washington State Universitywsu.edu
Statewide land-grant university offering research, education, and extension services in agriculture, health, engineering, business, and more across multiple campuses. |
11,522 |
| 23 |
Banfield Pet Hospitalbanfield.com
Providing high-quality preventive veterinary care and wellness plans to millions of pets across multiple locations in the United States and beyond. |
11,294 |
| 24 |
City of Seattleseattle.gov
Providing diverse public services across multiple departments to support community well-being, infrastructure, and inclusive city development. |
10,924 |
| 25 |
Zillowzillow.com
It reimagines real estate transactions, simplifying the process of buying, selling, renting, and financing homes through advanced technology and connections. |
10,321 |
| 26 |
Slalomslalom.com
Consulting firm delivering strategy, technology, and data-driven solutions to improve operations, customer experiences, and sustainable growth globally. |
10,268 |
| 27 | 9,958 | |
| 28 |
Coupangaboutcoupang.com
Disrupting commerce industry, providing unparalleled customer experience with innovative services and bold initiatives in a startup culture within a global company |
9,347 |
| 29 |
PeaceHealthpeacehealth.org
A not-for-profit Catholic health system with 16,000 caregivers, 900 providers, and 10 medical centers serving Washington, Oregon, and Alaska communities |
9,229 |
| 30 |
State of Washingtonwa.gov
Support public employees fostering education, innovation, job creation, environmental care, and health to build a thriving Washington community. |
9,128 |
| 31 |
Holland America Linehollandamerica.com
A leader in cruising for 150 years, offering once-in-a-lifetime experiences to exotic destinations worldwide, with a fleet of 11 modern classic ships |
8,882 |
| 32 |
Seattle Children'sseattlechildrens.org
Providing compassionate pediatric care, conducting breakthrough research, and supporting families to ensure children receive hope, care, and cures. |
8,756 |
| 33 |
Savers | Value Villagesavers.com
A team of thrifters providing fulfilling opportunities to grow Making a real impact through creative, dynamic, and fun work environments |
8,554 |
| 34 |
TikTok Shopseller-us.tiktok.com
Facilitating commerce on TikTok by providing merchants and creators with a platform to showcase and sell products directly within the app |
8,527 |
| 35 |
Swedishprovidence.org
A powerful network of skilled physicians, care centers, research and treatments offering world-class care in the Puget Sound region |
8,501 |
| 36 |
Fortivefortive.com
A diverse team of innovators leveraging essential technology to drive global progress in industrial, environmental, healthcare, and safety solutions |
8,485 |
| 37 |
PeopleReadypeopleready.com
Revolutionizing the way people connect with work through innovative solutions Join our award-winning team - explore open positions now |
8,371 |
| 38 |
King County, WAkingcounty.gov
A leading Washington employer, transforming government operations to provide essential services to over 2 million residents #GoPublic |
8,009 |
| 39 |
Windermere Real Estatewindermere.com
Leading residential real estate network in the Western US with 300+ offices and 6,500+ associates dedicated to improving communities Supporting low-income and homeless families through the Windermere Foundation |
7,859 |
| 40 |
Nintendonintendo.com
This company creates video games and entertainment to bring joy to people worldwide, building on a legacy of innovation and fun |
7,706 |
| 41 |
Wendy'swendys.com
This company is based in Washington, US and specializes in serving old-fashioned hamburgers |
7,615 |
| 42 |
Microsoft for Startupsmicrosoft.com
Helps startups grow faster through credits, industry-leading AI services, technical documentation, support, and go-to-market opportunities. |
7,534 |
| 43 |
Prime Video & Amazon MGM Studiosamazonstudios.co.uk
The company focuses on delivering top-tier digital video customer experiences, creating original films and series for a global audience |
7,510 |
| 44 |
Weyerhaeuserweyerhaeuser.com
Manage forests sustainably and manufacture wood products, emphasizing safety, excellence, and global career opportunities for passionate individuals. |
7,327 |
| 45 |
Veeam Softwareveeam.com
Provides data backup, recovery, security, and intelligence solutions ensuring business continuity and data availability across hybrid cloud environments worldwide. |
7,308 |
| 46 |
Schweitzer Engineering Laboratories (SEL)selinc.com
The company provides products and services for power system protection, monitoring, control, automation, communications, and metering with a focus on safety, reliability, and cost-effectiveness |
7,267 |
| 47 |
Microsoft AImicrosoft.ai
The company is a global community dedicated to sharing, discussing, and advancing artificial intelligence research, projects, and skills for all levels |
7,259 |
| 48 |
Washington State Department of Social and Health Servicesdshs.wa.gov
Transforming lives of Washington State's vulnerable residents through innovative social services, partnerships, and government relationships Services include healthcare, support, and assistance |
6,674 |
| 49 |
SAP Concurconcur.com
Offers integrated solutions for travel, expense, and invoice management, automating everyday processes and providing insights into spending, compliance, and budget blind spots. |
6,588 |
| 50 |
Pacific Northwest National Laboratorypnnl.gov
Research in chemistry, Earth sciences, biology, and data science to enhance energy resiliency and support national security efforts. |
6,257 |
| 51 |
eXp Realty, LLC
eXp Realty is a real estate company with an online platform for buying and selling properties Visit the provided LinkedIn page for more information |
6,210 |
| 52 | 6,192 | |
| 53 |
Fred Hutchfredhutch.org
Nonprofit organization specializing in cancer research and treatment, collaborating with UW Medicine to provide comprehensive cancer care services. |
6,180 |
| 54 |
Columbia Bankcolumbiabank.com
A full-service Northwest community bank offering sophisticated solutions and local commitment through over 140 branches across Washington, Oregon, and Idaho |
6,178 |
| 55 |
Getty Imagesgettyimages.com
Global provider of diverse visual content, including photos and videos, serving customers worldwide through multiple brands and advanced AI tools. |
6,122 |
| 56 |
Virginia Mason Franciscan Healthvmfh.org
Integrated health system in Washington state with 11 hospitals and nearly 300 sites, providing high-quality care through a team of 18,000 staff and 5,000 physicians |
5,999 |
| 57 |
Itron, Inc.na.itron.com
This company enables utilities and cities worldwide to deliver critical infrastructure services through smart networks, software, meters, and sensors for energy and water management |
5,820 |
| 58 |
Redfinredfin.com
A technology-driven real estate company offering brokerage, lending, title insurance, renovations, and rental services across the US and Canada |
5,652 |
| 59 |
Seattle Public Schoolsseattleschools.org
Largest K-12 school district in Washington, serving over 54,000 students with 8,000 staff focused on academic achievement. |
5,456 |
| 60 |
Zumiezzumiez.com
Specialty retailer offering apparel, footwear, accessories, and hardgoods for young individuals seeking to express their unique style and individuality |
5,240 |
| 61 |
Western Washington Universitywwu.edu
State-funded institution of higher education with 16,000 students offering 175+ academic programs, faculty access, multicultural diversity, and room to grow |
4,965 |
| 62 |
John L. Scott Real Estatejohnlscott.com
A real estate brand with over 100 offices and 3,000 brokers, focused on helping buyers and sellers achieve homeownership dreams since 1931 |
4,783 |
| 63 |
Hotel 1000hotel1000seattle.com
Luxury hotel in downtown Seattle offering 120 guest rooms, fine dining, spa, golf simulator, and personalized service for a unique experience |
4,761 |
| 64 |
Group Healthghc.org
Healthcare provider serving over 11 million members in eight states and DC, including 651,000 from Group Health Cooperative in Washington |
4,556 |
| 65 |
Millimanid.milliman.com
Independent consulting firm providing actuarial services, employee benefits, healthcare, investment, life insurance, and financial services to business, government, union, and nonprofit organizations worldwide. |
4,474 |
| 66 |
UW Medicineuwmedicine.org
Integrated health system combining clinical care, research, and education to provide specialized and primary healthcare across multiple states. |
4,344 |
| 67 |
ZoomInfozoominfo.com
Provides go-to-market platform, accurate data, insights, and technology for businesses to find, acquire, and grow customers efficiently, aligning sales and marketing. |
4,211 |
| 68 |
Gates Foundationgatesfoundation.org
Focus on improving health, reducing hunger and poverty in developing countries, and expanding educational opportunities in the United States. |
4,160 |
| 69 |
MOD Pizzamodpizza.com
A Seattle-based pizza company founded in 2008, prioritizing individual style, value, and community through their dedicated employees, the MOD Squad |
4,042 |
| 70 |
Smartsheetsmartsheet.com
Enterprise work management platform enabling organizations to move faster, drive innovation, and achieve more through process automation and collaboration tools |
4,015 |
| 71 |
Macy's , LLCmacys.com
A retail company headquartered in Seattle, WA, specializing in providing a wide range of products to consumers |
3,977 |
| 72 | 3,894 | |
| 73 |
Puget Sound Naval Shipyardnavsea.navy.mil
A naval shipyard and maintenance facility ensuring high quality, on-time maintenance, modernization, and support for the Navy's fleet to preserve national security |
3,797 |
| 74 |
Harborview Medical Centeruwmedicine.org
Founded in 1877 as a six-bed hospital, now a leading academic medical center overlooking Puget Sound offering advanced medical care |
3,757 |
| 75 |
MetroPCSmetrobyt-mobile.com
A wireless provider offering trade-off free all-unlimited plans with added value such as Amazon Prime and Google One, using advanced T-Mobile network |
3,711 |
| 76 |
Washington State Department of Transportationwsdot.wa.gov
The company improves Washington's transportation system by maintaining highways, ferries, and more, while focusing on strategic investments, sustainability, and efficiency |
3,609 |
| 77 |
Central Washington Universitycwu.edu
A public four-year university located in central Washington State with a focus on teaching and creating a model learning community |
3,544 |
| 78 | 3,515 | |
| 79 |
Seattle Universityseattleu.edu
A Jesuit, Catholic university in Seattle offering values-based education, preparing students for leadership in tech and innovation with strong alumni connections |
3,512 |
| 80 |
Beyondsoftbeyondsoft.com
A leading business IT and consulting company leveraging emerging technologies to deliver tailored solutions globally with a talented team |
3,483 |
| 81 |
Premera Blue Crosspremera.com
Leading health plan in the Pacific Northwest providing comprehensive health benefits and tailored services for individuals and companies, improving lives through better healthcare solutions. |
3,473 |
| 82 |
SanMarsanmar.com
A family-owned wholesaler of clothing and accessories, fostering a culture of work-life balance and employee well-being with growth opportunities and benefits |
3,472 |
| 83 |
Centificcentific.com
Engineering platforms and curating multilingual data for enterprise clients while providing pre-trained datasets, fine-tuned LLMs, and RAG pipelines for faster AI deployment. |
3,352 |
| 84 |
EvergreenHealthevergreenhealth.com
A community-owned health care system offering comprehensive services, personalized care, and community outreach funded by the local community |
3,333 |
| 85 |
Fluke Corporationfluke.com
Manufacturer and distributor of electronic test tools and software, providing essential technology for safer, smarter industrial and electrical applications. |
3,317 |
| 86 |
My house and homeianmcnicholl.com
A home-oriented company in Seattle, Washington, providing various services related to houses and home improvement |
3,167 |
| 87 |
University of Washington Medical Centeruwmedicine.org
A healthcare facility providing innovative, high-quality patient care with expanded services in oncology, radiology, and Neonatal Intensive Care |
3,167 |
| 88 |
Aegisaegisgrp.com
Aegis offers custom engineering and technology solutions to various clients, focusing on multi-disciplined approaches, hardware and software testing, and GIS-based mobile solutions |
3,156 |
| 89 |
Welding of Weldersboilersinfo.com
A global community of welding enthusiasts offering free resources such as Ebooks, PDFs, PPTs, and codes for welders worldwide |
3,142 |
| 90 |
Zones, LLCzones.com
Global IT solution provider with expertise in digital workplace, cloud services, networking, security, and staffing solutions Operating in 120+ countries with top certifications |
3,134 |
| 91 |
Gonzaga Universitygonzaga.edu
A Catholic, Jesuit university in the Pacific Northwest offering a top-ranked academic experience, global connections, and empowering responsible leaders for communities |
3,124 |
| 92 |
Puget Sound Energypse.com
A longstanding energy provider in Washington state serving over 11 million electric customers and 800,000 natural gas customers across 10 counties Visit psecom for more information |
3,123 |
| 93 |
Kenworth Truck Co.kenworth.com
A global leader in manufacturing heavy and medium duty trucks with a focus on fuel-saving technology solutions, premium truck design, and customer support services |
3,075 |
| 94 |
Banner Bankbannerbank.com
A community bank offering comprehensive financial services in Oregon, Washington, California, and Idaho with a focus on individual service and competitive products |
3,016 |
| 95 |
Eastern Washington Universityewu.edu
Provides diverse academic programs, hands-on learning, and community collaboration to prepare students for successful careers in various fields. |
2,997 |
| 96 | 2,934 | |
| 97 |
Symetrasymetra.com
A financial services company providing annuities, life insurance, and employee benefits to help people secure retirements, protect their families, and receive work benefits |
2,863 |
| 98 |
Valley Medical Centervalleymed.org
A nonprofit healthcare provider offering a wide range of medical services including emergency care, specialty clinics, and skilled clinicians in Washington |
2,830 |
| 99 |
Assurance IQassurance.com
Assurance IQ offers personalized insurance guidance using data science and licensed agents to help protect individuals' financial and personal well-being |
2,824 |
| 100 |
Pierce Countypiercecountywa.gov
Pierce County is a vibrant community in Washington state, home to diverse residents, top universities, iconic landmarks, and thriving businesses |
2,823 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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.
More company lists in Washington State
- SaaS companies in Washington State 141
- IT Services and IT Consulting companies in Washington State 118
- Software Development companies in Washington State 115
- Hospitals and Health Care companies in Washington State 104
- Retail chains in Washington State 98
- Education providers in Washington State 94
- Critical infrastructure operators in Washington State 89
- Public sector organisations in Washington State 82
- IT services companies in Washington State 80
- Healthcare providers in Washington State 73
- Higher Education companies in Washington State 72
- Financial services firms in Washington State 63
- Manufacturers in Washington State 61
- Government Administration companies in Washington State 60
- Construction companies in Washington State 59
- Financial Services companies in Washington State 50
- AI companies in Washington State 49
- Primary and Secondary Education companies in Washington State 48
- Real Estate companies in Washington State 47
- Family-owned companies in Washington State 42
- Aerospace and defence companies in Washington State 41
- Non-profit Organizations companies in Washington State 41
- E-commerce companies in Washington State 40
- Education Administration Programs companies in Washington State 40
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 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 Arizona 1,449
- 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