These companies with a mobile app in Washington State are predominantly large enterprises, with a strong presence in software development and retail. Amazon, an e-commerce giant, leads the list, alongside Microsoft, which develops software and cloud services. Retail is well represented by Costco Wholesale, a global warehouse club, and Starbucks, known for its coffee shops. T-Mobile provides wireless services, and Expedia Group operates in the travel technology sector.
A clear pattern is the concentration of headquarters in Seattle, which hosts a significant number of these large companies. Redmond and Bellevue also feature as key locations for major tech and telecommunications firms.
| # | 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 |
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 | |||
| 8 |
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 | |||
| 9 |
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 | |||
| 10 |
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 | |||
| 11 |
Alaska Airlinesalaskaair.com
Passenger airline providing exceptional service through dedicated employees, focusing on safety, customer care, and community engagement. |
13,396 | |||
| 12 |
TrueBlue Inc.trueblue.com
Staffing, recruiting, and workforce management services for diverse industries, providing reliable and efficient workforce solutions daily. |
12,447 | |||
| 13 | 11,723 | ||||
| 14 |
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 | |||
| 15 |
City of Seattleseattle.gov
Providing diverse public services across multiple departments to support community well-being, infrastructure, and inclusive city development. |
10,924 | |||
| 16 |
Zillowzillow.com
It reimagines real estate transactions, simplifying the process of buying, selling, renting, and financing homes through advanced technology and connections. |
10,321 | |||
| 17 | 9,958 | ||||
| 18 |
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 | |||
| 19 |
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 | |||
| 20 |
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 | |||
| 21 |
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 | |||
| 22 |
PeopleReadypeopleready.com
Revolutionizing the way people connect with work through innovative solutions Join our award-winning team - explore open positions now |
8,371 | |||
| 23 |
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 | |||
| 24 |
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 | |||
| 25 |
Wendy'swendys.com
This company is based in Washington, US and specializes in serving old-fashioned hamburgers |
7,615 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 26 |
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 | |||
| 27 |
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 | |||
| 28 |
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 | |||
| 29 |
Redfinredfin.com
A technology-driven real estate company offering brokerage, lending, title insurance, renovations, and rental services across the US and Canada |
5,652 | |||
| 30 |
Zumiezzumiez.com
Specialty retailer offering apparel, footwear, accessories, and hardgoods for young individuals seeking to express their unique style and individuality |
5,240 | |||
| 31 |
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 | |||
| 32 |
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 | |||
| 33 |
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 | |||
| 34 |
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 | |||
| 35 | 2,934 | ||||
| 36 |
Seabourn Cruise Lineseabourn.com
Luxurious and intimate cruise experiences to desirable destinations worldwide, offering exceptional service, dining, and spa facilities for a unique travel experience |
2,367 | |||
| 37 |
King County Metro Transitkingcounty.gov
A leading agency in King County providing innovative and sustainable public transportation services to connect people with communities and improve quality of life |
1,890 | |||
| 38 |
CHI Franciscan Healthvmfh.org
The company focuses on creating personalized and convenient healthcare experiences through a combination of people, capabilities, and technology |
1,820 | |||
| 39 |
Tableautableau.com
Provides software tools enabling users to visualize, analyze, and interpret data for better decision-making and actionable insights. |
1,788 | |||
| 40 |
Valve corporationvalvesoftware.com
Develops entertainment software, game engine, and a leading digital content platform. Also creates cutting-edge VR products and hardware devices for gaming. |
1,843 | |||
| 41 |
NCSOFT Westncsoft.com
A global publisher of popular online and mobile games, dedicated to bringing entertainment and happiness to millions of players worldwide |
1,739 | |||
| 42 |
Avistamyavista.com
Provider of energy services, electricity, and natural gas to customers in a service territory spanning 30,000 square miles across multiple states |
1,624 | |||
| 43 |
Outreachoutreach.ai
It provides a comprehensive sales execution platform that enhances efficiency in prospecting, deal management, and forecasting for revenue teams. |
1,579 | |||
| 44 | 1,415 | ||||
| 45 |
WaFd Bankwafdbank.com
A long-standing national bank dedicated to building healthy communities by providing straightforward banking solutions for clients since 1917 |
1,405 | |||
| 46 |
St John WAstjohnwa.com.au
A charitable organization providing high-quality first aid services in Western Australia for over 130 years, through career paramedics and volunteer services |
1,378 | |||
| 47 |
Accolade, Inc.accolade.com
Personalized healthcare company focused on connecting employees to tailored care through relationships, intelligent technology, and data insights for improved outcomes |
1,341 | |||
| 48 |
Washington Trust Bankwatrust.com
A community-driven bank, focused on building relationships and providing rewarding careers, serving individual, business, and wealth management clients |
1,299 | |||
| 49 | 1,249 | ||||
| 50 |
Zenotizenoti.com
Cloud-based software for spa, salon, and med spa industries worldwide, offering solutions for appointment booking, POS, CRM, inventory, marketing, and more |
1,209 | |||
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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 Nov 11, 2026.
More company lists in Washington State
- The largest companies in Washington State 2,143
- Multinational companies in Washington State 288
- Manufacturers in Washington State 176
- Education providers in Washington State 169
- Professional services firms in Washington State 163
- Retail chains in Washington State 161
- IT Services and IT Consulting companies in Washington State 160
- SaaS companies in Washington State 155
- Critical infrastructure operators in Washington State 149
- IT services companies in Washington State 145
- Companies with in-house R&D in Washington State 140
- Software Development companies in Washington State 140
- Public sector organisations in Washington State 139
- Healthcare providers in Washington State 136
- Hardware manufacturers in Washington State 121
- AI companies in Washington State 110
- Hospitals and Health Care companies in Washington State 107
- Consulting firms in Washington State 106
- Financial services firms in Washington State 92
- Construction companies in Washington State 87
- Subscription businesses in Washington State 86
- Higher Education companies in Washington State 74
- Family-owned companies in Washington State 73
- E-commerce companies in Washington State 69
The same list elsewhere in United States
- Companies with a mobile app in the United States 4,663
- Companies with a mobile app in California 827
- Companies with a mobile app in New York State 491
- Companies with a mobile app in Texas 366
- Companies with a mobile app in Florida 284
- Companies with a mobile app in Illinois 178
- Companies with a mobile app in Massachusetts 159
- Companies with a mobile app in Alabama 156
- Companies with a mobile app in Pennsylvania 130
- Companies with a mobile app in Georgia 117
- Companies with a mobile app in Ohio 114
- Companies with a mobile app in New Jersey 113
- Companies with a mobile app in Colorado 100
- Companies with a mobile app in North Carolina 96
- Companies with a mobile app in Michigan 95
- Companies with a mobile app in Virginia 93
- Companies with a mobile app in Arizona 87
- Companies with a mobile app in Minnesota 84
- Companies with a mobile app in Missouri 78
- Companies with a mobile app in Utah 78
- Companies with a mobile app in New York 371
- Companies with a mobile app in San Francisco 238
- Companies with a mobile app in Los Angeles 81
- Companies with a mobile app in Chicago 75