The 29 largest companies in Lake Oswego (2026 list)

#	Company	Industry	Headquarters	Employees	Founded
1	KinderCare Learning Companies kcecareers.com A leading provider of early childhood education, offering accredited programs, exceptional teachers, and a focus on preparing children for academic success	Education Administration Programs	🇺🇸 Lake Oswego	17,972	n/a
2	Precision Castparts precast.com Market leader in manufacturing structural investment castings, airfoil castings, forged components, aerostructures, fasteners, seamless pipe, fittings, and alloys for aerospace, power generation, and oil & gas industries	Aviation and Aerospace Component Manufacturing	🇺🇸 Lake Oswego	6,372	1953
3	The Greenbrier Companies gbrx.com Designs, builds, and markets freight railcars; provides wheel services, maintenance, leasing, and regulatory compliance for rail transportation.	Railroad Equipment Manufacturing	🇺🇸 Lake Oswego	2,010	1981
4	NAVEX navex.com Global leader in risk and compliance software, offering solutions to maximize value, increase operational efficiencies, and empower informed decision-making for organizations worldwide	Software Development	🇺🇸 Lake Oswego	1,484	2012
5	Hoffman Construction Company hoffmancorp.com A leading general contractor in the Pacific Northwest, committed to excellence, innovation, employee ownership, and helping individuals achieve their full potential	Construction	🇺🇸 Lake Oswego	1,352	1922
6	Eclipse Senior Living A former manager of senior living communities in the US, transitioning operations to 8 new management companies by end of 2021	Hospitality	🇺🇸 Lake Oswego	1,028	2017
7	OCP ocp.org A not-for-profit publisher of liturgical music resources, offering missals, hymnals, CDs, and more to engage and inspire worship communities	Book and Periodical Publishing	🇺🇸 Lake Oswego	1,019	1928
8	Elmcroft Senior Living Senior living communities across the United States offering care and services for elderly individuals from 2006 - 2021	Hospitals and Health Care	🇺🇸 Lake Oswego	998	2006
9	Premiere Property Group, LLC premierepropertygroup.com Full-service real estate brokerage offering residential, commercial, and property management services with over 1,100 agents, $4 billion in annual sales, and industry-leading marketing systems	Real Estate	🇺🇸 Lake Oswego	995	2009
10	unosquare unosquare.com Custom software development firm specializing in agile delivery for Healthcare, Finance, and High Tech industries, with a strong presence in the USA	IT Services and IT Consulting	🇺🇸 Lake Oswego	876	2009
11	Logical Position logicalposition.com A top digital marketing agency offering PPC, SEO, website development, graphic design, social media marketing, data feed management, and more to grow businesses globally	Advertising Services	🇺🇸 Lake Oswego	840	2010
12	KinderCare Learning Companies for Employers kindercare.com This company partners with organizations to provide high-quality, flexible child care benefits and education programs, fostering a culture of care and employee retention	Education Administration Programs	🇺🇸 Lake Oswego	833	n/a
13	LeadVenture India leadventure.com A market-leading SaaS provider offering dealership solutions across various industries, specializing in digital retailing, e-commerce, digital marketing, and dealer management	Software Development	🇺🇸 Lake Oswego	555	n/a
14	Vesta vesta.io End-to-end transaction guarantee platform using machine learning and 25 years of data to eliminate digital fraud and increase sales	Financial Services	🇺🇸 Lake Oswego	373	1995
15	Micro Systems Engineering, Inc.mst.com A pioneer in developing innovative implantable medical device technologies, MSEI designs and manufactures active implants for life-saving therapies worldwide	Medical Equipment Manufacturing	🇺🇸 Lake Oswego	283	1979
16	City of Lake Oswego ci.oswego.or.us Residential and commercial development in scenic Lake Oswego with top-rated schools, parks, amenities, and a council-manager form of government	Government Administration	🇺🇸 Lake Oswego	249	1910
17	Impact Electronic Solutions impactelectronics.com Provider of full-service electronics design and manufacturing solutions across various industries including medical, defense, aerospace, and robotics sectors	Computers and Electronics Manufacturing	🇺🇸 Lake Oswego	189	n/a
18	Directors Mortgage directorsmortgage.com Residential mortgage specialists offering personalized loan options in the Northwest, focusing on customer service, community involvement, and local decision-making	Financial Services	🇺🇸 Lake Oswego	186	1998
19	Mary’s Woods maryswoods.org Not-for-profit retirement community in Lake Oswego offering independent living, assisted living, memory care, and residential care with nursing staff and various amenities	Non-profit Organizations	🇺🇸 Lake Oswego	178	n/a
20	Yakima Products yakima.com A company providing racks, mounts, cargo boxes, and base camp products for almost 40 years to help people transport gear to their favorite places	Sporting Goods Manufacturing	🇺🇸 Lake Oswego	154	1979
21	Same Sky sameskydevices.com An electronic components manufacturer offering a wide range of Interconnect, Audio, Thermal Management, Motion, and Sensor solutions with a focus on customer success	Appliances, Electrical, and Electronics Manufacturing	🇺🇸 Lake Oswego	54	1989
22	Aldrich Wealth wealthadvisors.com We provide comprehensive wealth management services to high-net-worth individuals and corporate retirement plans to protect and grow financial assets	Financial Services	🇺🇸 Lake Oswego	45	1998
23	Affiliated Resources, LLC affiliatedresources.net A manufacturing company that researches, develops, produces, and sells branded products directly, utilizing quality raw materials and strong client relationships	Wholesale Building Materials	🇺🇸 Lake Oswego	19	1999
24	Steward Partners Investment Solutions, LLC stewardpartnersis.com A full-service independent investment firm offering wealth management, asset management, private banking, institutional consulting, and international advisory services across the country	Financial Services	🇺🇸 Lake Oswego	16	1928
25	VergePointe vergepointe.com A team of professional advisors specializing in comprehensive wealth management, private equity investments, and real estate development for entrepreneurs and high net worth individuals	Venture Capital and Private Equity Principals	🇺🇸 Lake Oswego	10	1985
26	ENGEL & VÖLKERS West Portland westportland.evusa.com Global lifestyle brand offering high quality real estate services worldwide with exceptional support, exclusive listings, cutting-edge technology, and top-tier agents since 1977	Real Estate	🇺🇸 Lake Oswego	7	2014
27	Falcon 5 Capital falcon5.capital An innovative investment firm focusing on technology-driven ventures with a strong emphasis on societal impact and future possibilities	Financial Services	🇺🇸 Lake Oswego	5	2023
28	NORTHWEST SURGICAL SYSTEMS, LLC nwsurgicalsystems.com A machinery company located in Lake Oswego, Oregon, specializing in surgical systems and equipment	Machinery Manufacturing	🇺🇸 Lake Oswego	2	2014
29	SGL skygardensdesign.com A consultancy specializing in energy efficiency programs for utilities, with a focus on sustainable resource management and a history of successful initiatives	Business Consulting and Services	🇺🇸 Lake Oswego	1	2006

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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