# List of companies with a mobile app in Washington State

Tamtam tracks 128 companies with a mobile app headquartered in Washington State. This list ranks the 50 largest by number of employees on LinkedIn, led by Amazon, Costco Wholesale and Microsoft. Their median headcount is 7,615. Half of them were founded in 1983 or later. The most common headquarters are Seattle (23), Bellevue (8) and Tacoma (4).

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.

🇺🇸 Washington State · 50 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Amazon](https://www.tamtam.ai/c/amazon) (amazon.com)<br>An e-commerce giant offering a vast selection of products, convenient shopping experiences, and fast delivery, connecting buyers with a wide range of sellers | Software Development | 🇺🇸 Seattle | 1,541,000 |  |
| 2 | [Costco Wholesale](https://www.tamtam.ai/c/costco-wholesale) (costco.com)<br>Global warehouse club retailer operating in multiple countries, focusing on quality, ethics, employee success, and customer service excellence. | Retail | 🇺🇸 Seattle | 304,000 | 1983 |
| 3 | [Microsoft](https://www.tamtam.ai/c/microsoft) (microsoft.com)<br>Develops and sells software, hardware, and cloud services, including the Windows operating system and Office suite, to improve productivity and digital experiences | Software Development | 🇺🇸 Redmond | 233,562 |  |
| 4 | [Starbucks](https://www.tamtam.ai/c/starbucks) (starbucks.com)<br>The company focuses on creating positive change in the world by providing a welcoming environment for employees to grow their careers and community connections | Retail | 🇺🇸 Seattle | 190,713 | 1971 |
| 5 | [Amazon Web Services (AWS)](https://www.tamtam.ai/c/amazon-web-services-aws) (amazon.com)<br>A global cloud computing provider offering scalable, reliable, and cost-effective infrastructure services to businesses worldwide, eliminating the need for capital infrastructure expenses | IT Services and IT Consulting | 🇺🇸 Seattle | 147,090 | 2006 |
| 6 | [T-Mobile](https://www.tamtam.ai/c/t-mobile) (careers.t-mobile.com)<br>Leading US wireless provider delivering advanced 4G LTE and nationwide 5G networks, prioritizing customer value, service excellence, and innovation in Bellevue, Washington | Telecommunications | 🇺🇸 Bellevue | 96,232 |  |
| 7 | [Nordstrom](https://www.tamtam.ai/c/nordstrom) (nordstrom.com)<br>Empowering employees to achieve success through hard work, leadership, and dedication to customer service Committed to environmental sustainability and community support | Retail | 🇺🇸 Seattle | 48,381 | 1901 |
| 8 | [Expedia Group](https://www.tamtam.ai/c/expedia-group) (careers.expediagroup.com)<br>A tech company in the travel industry creating unforgettable experiences, empowering travelers worldwide, and committed to inclusivity and accessibility | Software Development | 🇺🇸 Seattle | 21,829 |  |
| 9 | [Providence Health & Services](https://www.tamtam.ai/c/providence-health-and-services) (providence.org)<br>A healthcare organization focused on providing compassionate care through a network of hospitals, clinics, and services across multiple states | Hospitals and Health Care | 🇺🇸 Renton | 20,360 |  |
| 10 | [Amazon Business](https://www.tamtam.ai/c/amazon-business) (business.amazon.com)<br>Simplified procurement platform offering extensive product selection and innovative tools to meet diverse organizational purchasing needs at any growth stage. | Retail | 🇺🇸 Seattle | 15,896 |  |
| 11 | [Alaska Airlines](https://www.tamtam.ai/c/alaska-airlines) (alaskaair.com)<br>Passenger airline providing exceptional service through dedicated employees, focusing on safety, customer care, and community engagement. | Airlines and Aviation | 🇺🇸 Seattle | 13,396 |  |
| 12 | [TrueBlue Inc.](https://www.tamtam.ai/c/trueblue-inc) (trueblue.com)<br>Staffing, recruiting, and workforce management services for diverse industries, providing reliable and efficient workforce solutions daily. | Staffing and Recruiting | 🇺🇸 Tacoma | 12,447 | 1989 |
| 13 | [Rover.com](https://www.tamtam.ai/c/rover-com) (rover.com)<br>The company connects pet owners with loving pet sitters and walkers to make experiencing the unconditional love of a pet easier | Consumer Services | 🇺🇸 Seattle | 11,723 | 2011 |
| 14 | [Banfield Pet Hospital](https://www.tamtam.ai/c/banfield-pet-hospital) (banfield.com)<br>Providing high-quality preventive veterinary care and wellness plans to millions of pets across multiple locations in the United States and beyond. | Veterinary Services | 🇺🇸 Vancouver | 11,294 | 1955 |
| 15 | [City of Seattle](https://www.tamtam.ai/c/city-of-seattle) (seattle.gov)<br>Providing diverse public services across multiple departments to support community well-being, infrastructure, and inclusive city development. | Government Administration | 🇺🇸 Seattle | 10,924 |  |
| 16 | [Zillow](https://www.tamtam.ai/c/zillow) (zillow.com)<br>It reimagines real estate transactions, simplifying the process of buying, selling, renting, and financing homes through advanced technology and connections. | Real Estate | 🇺🇸 Seattle | 10,321 | 2006 |
| 17 | [REI](https://www.tamtam.ai/c/rei) (rei.com)<br>A company that inspires and enables people to embrace the outdoors by providing gear, advice, rentals, and outdoor experiences while supporting sustainability | Retail | 🇺🇸 Seattle | 9,958 | 1938 |
| 18 | [Coupang](https://www.tamtam.ai/c/coupang) (aboutcoupang.com)<br>Disrupting commerce industry, providing unparalleled customer experience with innovative services and bold initiatives in a startup culture within a global company | Software Development | 🇺🇸 Seattle | 9,347 | 2010 |
| 19 | [Holland America Line](https://www.tamtam.ai/c/holland-america-line) (hollandamerica.com)<br>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 | Travel Arrangements | 🇺🇸 Seattle | 8,882 | 1873 |
| 20 | [Savers \| Value Village](https://www.tamtam.ai/c/savers-value-village) (savers.com)<br>A team of thrifters providing fulfilling opportunities to grow Making a real impact through creative, dynamic, and fun work environments | Retail | 🇺🇸 Bellevue | 8,554 |  |
| 21 | [TikTok Shop](https://www.tamtam.ai/c/tiktok-shop) (seller-us.tiktok.com)<br>Facilitating commerce on TikTok by providing merchants and creators with a platform to showcase and sell products directly within the app | Technology, Information and Internet | 🇺🇸 Bellevue | 8,527 |  |
| 22 | [PeopleReady](https://www.tamtam.ai/c/peopleready) (peopleready.com)<br>Revolutionizing the way people connect with work through innovative solutions Join our award-winning team - explore open positions now | Staffing and Recruiting | 🇺🇸 Tacoma | 8,371 |  |
| 23 | [Windermere Real Estate](https://www.tamtam.ai/c/windermere-real-estate) (windermere.com)<br>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 | Real Estate | 🇺🇸 Seattle | 7,859 | 1972 |
| 24 | [Nintendo](https://www.tamtam.ai/c/nintendo) (nintendo.com)<br>This company creates video games and entertainment to bring joy to people worldwide, building on a legacy of innovation and fun | Computer Games | 🇺🇸 Redmond | 7,706 | 1980 |
| 25 | [Wendy's](https://www.tamtam.ai/c/wendy-s) (wendys.com)<br>This company is based in Washington, US and specializes in serving old-fashioned hamburgers | Consumer Services | 🇺🇸 Auburn | 7,615 |  |
| 26 | [Prime Video & Amazon MGM Studios](https://www.tamtam.ai/c/prime-video-and-amazon-mgm-studios) (amazonstudios.co.uk)<br>The company focuses on delivering top-tier digital video customer experiences, creating original films and series for a global audience | Entertainment Providers | 🇺🇸 Seattle | 7,510 |  |
| 27 | [SAP Concur](https://www.tamtam.ai/c/sap-concur) (concur.com)<br>Offers integrated solutions for travel, expense, and invoice management, automating everyday processes and providing insights into spending, compliance, and budget blind spots. | Software Development | 🇺🇸 Bellevue | 6,588 |  |
| 28 | [Virginia Mason Franciscan Health](https://www.tamtam.ai/c/virginia-mason-franciscan-health) (vmfh.org)<br>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 | Hospitals and Health Care | 🇺🇸 Tacoma | 5,999 |  |
| 29 | [Redfin](https://www.tamtam.ai/c/redfin) (redfin.com)<br>A technology-driven real estate company offering brokerage, lending, title insurance, renovations, and rental services across the US and Canada | Real Estate | 🇺🇸 Seattle | 5,652 | 2006 |
| 30 | [Zumiez](https://www.tamtam.ai/c/zumiez) (zumiez.com)<br>Specialty retailer offering apparel, footwear, accessories, and hardgoods for young individuals seeking to express their unique style and individuality | Retail | 🇺🇸 Lynnwood | 5,240 | 1978 |
| 31 | [MOD Pizza](https://www.tamtam.ai/c/mod-pizza) (modpizza.com)<br>A Seattle-based pizza company founded in 2008, prioritizing individual style, value, and community through their dedicated employees, the MOD Squad | Restaurants | 🇺🇸 Bellevue | 4,042 | 2008 |
| 32 | [Washington State Department of Transportation](https://www.tamtam.ai/c/washington-state-department-of-transportation) (wsdot.wa.gov)<br>The company improves Washington's transportation system by maintaining highways, ferries, and more, while focusing on strategic investments, sustainability, and efficiency | Government Administration | 🇺🇸 Olympia | 3,609 | 1905 |
| 33 | [Premera Blue Cross](https://www.tamtam.ai/c/premera-blue-cross) (premera.com)<br>Leading health plan in the Pacific Northwest providing comprehensive health benefits and tailored services for individuals and companies, improving lives through better healthcare solutions. | Insurance | 🇺🇸 Mountlake Terrace | 3,473 | 1933 |
| 34 | [Banner Bank](https://www.tamtam.ai/c/banner-bank) (bannerbank.com)<br>A community bank offering comprehensive financial services in Oregon, Washington, California, and Idaho with a focus on individual service and competitive products | Banking | 🇺🇸 Walla Walla | 3,016 | 1890 |
| 35 | [BECU](https://www.tamtam.ai/c/becu) (becu.org)<br>A member-owned, not-for-profit financial cooperative putting people over profit, prioritizing members' and employees' needs, and emphasizing work satisfaction | Banking | 🇺🇸 Tukwila | 2,934 | 1935 |
| 36 | [Seabourn Cruise Line](https://www.tamtam.ai/c/seabourn-cruise-line) (seabourn.com)<br>Luxurious and intimate cruise experiences to desirable destinations worldwide, offering exceptional service, dining, and spa facilities for a unique travel experience | Travel Arrangements | 🇺🇸 Seattle | 2,367 | 1988 |
| 37 | [King County Metro Transit](https://www.tamtam.ai/c/king-county-metro-transit) (kingcounty.gov)<br>A leading agency in King County providing innovative and sustainable public transportation services to connect people with communities and improve quality of life | Truck Transportation | 🇺🇸 Wa | 1,890 | 1973 |
| 38 | [CHI Franciscan Health](https://www.tamtam.ai/c/chi-franciscan-health) (vmfh.org)<br>The company focuses on creating personalized and convenient healthcare experiences through a combination of people, capabilities, and technology | Hospitals and Health Care | 🇺🇸 Tacoma | 1,820 |  |
| 39 | [Tableau](https://www.tamtam.ai/c/tableau) (tableau.com)<br>Provides software tools enabling users to visualize, analyze, and interpret data for better decision-making and actionable insights. | Software Development | 🇺🇸 Seattle | 1,788 | 2003 |
| 40 | [Valve corporation](https://www.tamtam.ai/c/valve-corporation) (valvesoftware.com)<br>Develops entertainment software, game engine, and a leading digital content platform. Also creates cutting-edge VR products and hardware devices for gaming. | Computer Games | 🇺🇸 Bellevue | 1,843 | 1996 |
| 41 | [NCSOFT West](https://www.tamtam.ai/c/ncsoft-west) (ncsoft.com)<br>A global publisher of popular online and mobile games, dedicated to bringing entertainment and happiness to millions of players worldwide | Computer Games | 🇺🇸 Bellevue | 1,739 |  |
| 42 | [Avista](https://www.tamtam.ai/c/avista) (myavista.com)<br>Provider of energy services, electricity, and natural gas to customers in a service territory spanning 30,000 square miles across multiple states | Utilities | 🇺🇸 Spokane | 1,624 |  |
| 43 | [Outreach](https://www.tamtam.ai/c/outreach) (outreach.ai)<br>It provides a comprehensive sales execution platform that enhances efficiency in prospecting, deal management, and forecasting for revenue teams. | Software Development | 🇺🇸 Seattle | 1,579 | 2014 |
| 44 | [Funko](https://www.tamtam.ai/c/funko) (funko.com)<br>A leading pop culture lifestyle brand offering vinyl figures, toys, apparel, NFTs, and more, connecting fans with their favorite entertainment franchises worldwide | Consumer Goods | 🇺🇸 Everett | 1,415 | 1998 |
| 45 | [WaFd Bank](https://www.tamtam.ai/c/wafd-bank) (wafdbank.com)<br>A long-standing national bank dedicated to building healthy communities by providing straightforward banking solutions for clients since 1917 | Banking | 🇺🇸 Seattle | 1,405 | 1917 |
| 46 | [St John WA](https://www.tamtam.ai/c/st-john-wa) (stjohnwa.com.au)<br>A charitable organization providing high-quality first aid services in Western Australia for over 130 years, through career paramedics and volunteer services | Hospitals and Health Care | 🇺🇸 Belmont | 1,378 | 1887 |
| 47 | [Accolade, Inc.](https://www.tamtam.ai/c/accolade-inc) (accolade.com)<br>Personalized healthcare company focused on connecting employees to tailored care through relationships, intelligent technology, and data insights for improved outcomes | Hospitals and Health Care | 🇺🇸 Seattle | 1,341 | 2020 |
| 48 | [Washington Trust Bank](https://www.tamtam.ai/c/washington-trust-bank) (watrust.com)<br>A community-driven bank, focused on building relationships and providing rewarding careers, serving individual, business, and wealth management clients | Banking | 🇺🇸 Spokane | 1,299 | 1902 |
| 49 | [Keka HR](https://www.tamtam.ai/c/keka-hr) (keka.com)<br>Provides a unified HR and payroll platform to manage people operations, including hiring, time, performance, and core HR workflows for various organizations. | Software Development | 🇺🇸 Seattle | 1,249 | 2015 |
| 50 | [Zenoti](https://www.tamtam.ai/c/zenoti) (zenoti.com)<br>Cloud-based software for spa, salon, and med spa industries worldwide, offering solutions for appointment booking, POS, CRM, inventory, marketing, and more | Software Development | 🇺🇸 Bellevue | 1,209 | 2010 |

## 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

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Source: https://www.tamtam.ai/l/companies-with-mobile-app-washington-state