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32 leading contract manufacturers in Washington State

Tamtam tracks 32 contract manufacturers headquartered in Washington State. This list ranks all of them by number of employees on LinkedIn, led by AGC Biologics, Janicki and Keytronic. Their median headcount is 79. Half of them were founded in 1993 or later. The most common headquarters are Seattle (6), Vancouver (4) and Arlington (2).

馃嚭馃嚫 Washington State32 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
AGC Biologicsagcbio.com

Provides world-class development and manufacturing of therapeutic proteins, plasmid DNA, messenger RNA, viral vectors, and genetically engineered cell therapies globally.

Pharmaceutical Manufacturing 馃嚭馃嚫 Bothell 2,525 n/a
2
Janickijanicki.com

Designs high-precision parts, tooling, and prototypes for various industries Specializes in large, complex projects with advanced CNC machining capabilities and real-time project management solutions

Aviation and Aerospace Component Manufacturing 馃嚭馃嚫 Sedro-Woolley 1,029 1993
3
Keytronickeytronic.com

Value-added contract manufacturer for OEMs, specializing in PCB assembly, plastic molding, and full product assembly across diverse products, with manufacturing in Mexico and China.

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 Spokane Valley 1,010 1969
4
Jubilant HollisterStier CMOjublhs.com

Provides comprehensive sterile fill-finish and lyophilization services, ensuring consistent delivery of high-quality products for global healthcare markets and patients.

Pharmaceutical Manufacturing 馃嚭馃嚫 Spokane 850 n/a
5
PCC AEROSTRUCTURESpccaero.com

A vertically integrated supplier providing metallic and composite parts, kits, and assemblies to the aerospace industry globally

Airlines and Aviation 馃嚭馃嚫 Bellevue 799 n/a
6
Pioneer Human Servicespioneerhumanservices.org

A nonprofit social enterprise in Washington state that supports justice-involved individuals with housing, healthcare, employment, and job training programs to reduce societal challenges

Non-profit Organizations 馃嚭馃嚫 Seattle 678 1963
7
MICROmicro-co.com

Provides contract manufacturing services including medical device assembly, metal stamping, molding, machining, sharpening, and finishing for various industries worldwide.

Medical Equipment Manufacturing 馃嚭馃嚫 Somerset 650 1945
8
Just - Evotec Biologicsevotec.com

Provides differentiated services for biologics development and manufacturing, utilizing AI-driven optimization and continuous bioprocessing to reduce costs and expand global access.

Biotechnology Research 馃嚭馃嚫 Seattle 614 2014
9
TSMC Washingtonwafertech.com

Manufacturing computer chips for other businesses, enabling various products from cell phones to cars with high-quality, reliable integrated circuits.

Semiconductor Manufacturing 馃嚭馃嚫 Camas 555 1996
10
Skookumtessera.org

A national leader in Disability and Veteran employment, providing next-level customer service, workforce development, and high-quality manufacturing for federal and commercial customers

Non-profit Organizations 馃嚭馃嚫 Bremerton 546 1988
11
Core Health & Fitnesscorehandf.com

A global partner in commercial fitness equipment, offering manufacturing, installation, and support services for top fitness brands worldwide

Wellness and Fitness Services 馃嚭馃嚫 Vancouver 402 2010
12
Jubilant HollisterStier LLCjublhs.com

Provider of comprehensive services for pharmaceutical and biopharmaceutical industries, specializing in manufacturing allergenic extracts and sterile injectable vials, part of Jubilant Pharma Company

Pharmaceuticals 馃嚭馃嚫 Spokane 386 1921
13
Vaupellvaupell.com

A global provider of precision components and assemblies for aerospace, medical, and defense industries, specializing in plastics, metals, and advanced composite parts

Aviation and Aerospace Component Manufacturing 馃嚭馃嚫 Everett 322 1947
14
Cascade Coffee, LLCcascadecoffee.com

A leading contract roasting and packaging operation in the US, specializing in producing a wide range of coffee products for various markets

Food and Beverage Services 馃嚭馃嚫 Everett 115 1995
15
Vexos | ControlTekcontroltek.com

A company specializing in design and manufacturing for Medical, Aviation/Space and Defense, Industrial, and Consumer products with a focus on lean enterprise and lasting partnerships

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 Vancouver 80 1971
16
ALTEK, Inc.altek-inc.com

Full-service contract manufacturer providing product realization services to high tech industries, including design, engineering, supply chain management, injection molding, assembly, and finishing

Manufacturing 馃嚭馃嚫 Liberty Lake 79 1976
17
Servatron, A Volex Companyvolex.com

A reliable provider of custom and contract manufacturing services for the electronics industry, delivering high-quality finished goods and components efficiently

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 Spokane Valley 78 2000
18
Piller Aimmcopilleraimmco.com

A vertically integrated plastic injection molding company offering in-house design, engineering, tooling, and manufacturing for high precision plastic parts

Plastics Manufacturing 馃嚭馃嚫 Washougal 57 1963
19
KASO Plasticskaso.com

A full-service plastic injection molder in Vancouver, WA, providing high-quality, close-tolerance products at competitive prices for customer satisfaction in the Pacific Northwest and beyond

Plastics Manufacturing 馃嚭馃嚫 Vancouver 50 1962
20
Richmark Labelrichmarklabel.com

An award-winning label printer producing custom labels, stickers, and tape for various products with a wide range of printing capabilities and delivery formats

Printing Services 馃嚭馃嚫 Seattle 46 1946
21
Cobalt Enterprises, LLCcobaltent.com

A dynamic company manufacturing precision machined parts and assemblies for aerospace, defense, and commercial industries, with a focus on quality and customer service

Industrial Machinery Manufacturing 馃嚭馃嚫 Arlington 37 2004
22
Silicon Forest Electronics, a subsidiary of Impact Electronic Solutionsimpactelectronics.com

Full-service electronics manufacturing company in Vancouver, WA, offering design, prototype, production, and test services for Aerospace, Defense, Medical, and Instrumentation industries

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 Vancouver 36 1999
23
AccraFabaccrafab.com

A leading fabrication and contract manufacturing company since 1979, specializing in precision sheet metal components and assemblies, with a focus on quality and supply chain logistics

Industrial Machinery Manufacturing 馃嚭馃嚫 Liberty Lake 35 1979
24
Senior Aerospace Absolute Manufacturing

A precision manufacturer offering complex machining solutions, assembly services, and design engineering, backed by financial strength and a culture of continuous improvement

Aviation and Aerospace Component Manufacturing 馃嚭馃嚫 Arlington 30 1996
25
Trulife Engineered Solutionstrulifeengineeredsolutions.com

A leading manufacturing service provider in the Pacific Northwest, offering project management, contract manufacturing, CNC machining, prototype machining, and complex assembly services

Aviation and Aerospace Component Manufacturing 馃嚭馃嚫 Bellingham 27 n/a
26
2333 Designs & Manufacturing2333designs.com

The company specializes in providing comprehensive solutions for design and manufacturing processes, offering full turnkey services to clients

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 Seattle 16 2006
27
Dylan Aerospacedylanaerospace.com

A manufacturing facility specializing in close-tolerance products for aerospace, defense, and technology industries, integrated into various platforms worldwide

Aviation and Aerospace Component Manufacturing 馃嚭馃嚫 Auburn 15 1999
28
NaiMor Incnaimormetalfabrication.com

Highly skilled professionals producing quality parts and assemblies at competitive prices, specializing in both prototypes and full production quantities with reliable, innovative solutions

Machinery Manufacturing 馃嚭馃嚫 Snohomish 13 2012
29
Prowse Manufacturing Groupprowsegroup.com

A leading contract manufacturer specializing in precision sheet metal and CNC machined components for aviation, defense, technology, and space industries Quality-driven with top certifications

Aviation and Aerospace Component Manufacturing 馃嚭馃嚫 Marysville 12 2018
30
Zapariozapario.com

Specializes in IoT, AI, and edge computing solutions, offering electronics ODM services and manufacturing capabilities to bring innovative products to market

IT Services and IT Consulting 馃嚭馃嚫 Seattle 4 2019
31
Hobart Machined Products Inchobartmachined.com

A customer-focused manufacturer of precision parts, specializing in complex machining tasks, prototype production, tooling fabrication, and engineering services for worldwide clients

Aviation and Aerospace Component Manufacturing 馃嚭馃嚫 Hobart 3 1988
32
Woodmax Seattlewoodmax.com.tw

A leading manufacturing and design company specializing in creating high-quality products while focusing on aesthetics, functionality, and cost for industry leaders worldwide

Manufacturing 馃嚭馃嚫 Seattle 2 1986

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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.

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