Company lists · Data refreshed September 2026

Top 25 Contract manufacturing companies based in the United States

Name: Contract manufacturing companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 15, 2026 3,203 companies tracked

RevenueBase identified 3,203 contract manufacturing companies headquartered in the United States as of September 2026 and tracks 156,422 professional contacts across them, including 39,179 with verified work emails. San Jose is the largest hub.

This list covers contract manufacturing companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 15, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 15, 2026 86% judged on-target in blind review

3,203Companies

156,422Contacts tracked

39,179Verified emails

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The 25 largest contract manufacturing companies based in the United States

Ranked by team size

Top 25 of 3,203 contract manufacturing companies based in the United States, ranked by team size, largest first. Data refreshed Sep 15, 2026. RevenueBase Smart Search rates how each company's information relates to contract manufacturing companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Sanmina	Partial evidence	San Jose, CA, United StatesHQ checked Sep 15, 2026	10001+	20,153 contacts →
	Partial evidence “Sanmina Corporation (Nasdaq: SANM) is a leading integrated manufacturing solutions provider serving the fastest-growing segments of the global Electronics Manufacturing Services…” Source: RevenueBase Database · checked Sep 15, 2026
2	Plexus Corp	Indirect evidence	Neenah, NC, United StatesHQ checked Sep 15, 2026	10001+	8,149 contacts →
	Indirect evidence “Since 1979, Plexus has been partnering with companies to create the products that build a better world.” Source: RevenueBase Database · checked Sep 15, 2026
3	Benchmark	Partial evidence	Tempe, AZ, United StatesHQ checked Sep 15, 2026	10001+	5,362 contacts →
	Partial evidence “Benchmark is a worldwide provider of innovative product design, engineering services, technology solutions and advanced manufacturing services.” Source: RevenueBase Database · checked Sep 15, 2026
4	Flex-N-Gate	Indirect evidence	Urbana, IL, United StatesHQ checked Sep 15, 2026	10001+	4,298 contacts →
	Indirect evidence “Starting with aftermarket parts in 1956 and moving into O.E.” Source: RevenueBase Database · checked Sep 15, 2026
5	Kimball Electronics	Indirect evidence	Jasper, IN, United StatesHQ checked Sep 15, 2026	5,001-10,000	2,192 contacts →
	Indirect evidence “Kimball Electronics was founded in 1961.” Source: RevenueBase Database · checked Sep 15, 2026
6	Android Industries	Partial evidence	Auburn Hills, MI, United StatesHQ checked Sep 15, 2026	1,001-5,000	1,404 contacts →
	Partial evidence “Voltava was formed in December 2025 through the combination of Detroit Manufacturing Systems, Android Industries and Avancez Assembly.” Source: RevenueBase Database · checked Sep 15, 2026
7	MEC Mayville Engineering Company, INC	Partial evidence	Mayville, WI, United StatesHQ checked Sep 15, 2026	1,001-5,000	906 contacts →
	Partial evidence “We are more than just a manufacturing and fabricating company.” Source: RevenueBase Database · checked Sep 15, 2026
8	Nelson Global	Indirect evidence	Stoughton, WI, United StatesHQ checked Sep 15, 2026	1,001-5,000	879 contacts →
	Indirect evidence “Nelson Global designs, manufactures, and distributes custom solutions for customers across crucial industries worldwide.” Source: RevenueBase Database · checked Sep 15, 2026
9	Keytronic	Partial evidence	Spokane Valley, WA, United StatesHQ checked Sep 15, 2026	1,001-5,000	819 contacts →
	Partial evidence “Keytronic is a value-added contract manufacturer to some of the world’s leading OEMs.” Source: RevenueBase Database · checked Sep 15, 2026
10	MICRO	Partial evidence	Somerset, NJ, United StatesHQ checked Sep 15, 2026	501-1,000	723 contacts →
	Partial evidence “MICRO is a full service contract manufacturer that draws on more than 80 years of experience in medical device assembly, precision metal stamping, insert and injection molding…” Source: RevenueBase Database · checked Sep 15, 2026
11	Hollingsworth	Indirect evidence	Dearborn, MI, United StatesHQ checked Sep 15, 2026	1,001-5,000	664 contacts →
	Indirect evidence “Hollingsworth provides a complete portfolio of services tailored to exceed customer expectations through the use of industry leading SAP software, dedicated training programs and…” Source: RevenueBase Database · checked Sep 15, 2026
12	OSI Electronics	Partial evidence	Hawthorne, CA, United StatesHQ checked Sep 15, 2026	1,001-5,000	634 contacts →
	Partial evidence “OSI Electronics is a global Manufacturing Solutions provider headquartered in Hawthorne, CA, and Singapore.” Source: RevenueBase Database · checked Sep 15, 2026
13	Trend Technologies	Indirect evidence	Chino, CA, United StatesHQ checked Sep 15, 2026	1,001-5,000	601 contacts →
	Indirect evidence “Trend Technologies is a vertically integrated mechanical solutions provider specializing in the areas of metal stamping, metal fabrication and injection molding.” Source: RevenueBase Database · checked Sep 15, 2026
14	IEC Electronics Corp	Partial evidence	Newark, NY, United StatesHQ checked Sep 15, 2026	n/a	563 contacts →
	Partial evidence “IEC Electronics, acquired by Creation Technologies in 2021, is a provider of electronic manufacturing services ("EMS") to advanced technology companies that produce life-saving…” Source: RevenueBase Database · checked Sep 15, 2026
15	Accumed Corp	Strong evidence	Mocksville, NC, United StatesHQ checked Sep 15, 2026	1,001-5,000	559 contacts →
	Strong evidence “AccuMED Corp is a contract manufacturing partner to major medical device companies, providing exceptional, customer-centric solutions of the highest quality on time and at…” Source: RevenueBase Database · checked Sep 15, 2026
16	Tegra Medical	Strong evidence	Franklin, MA, United StatesHQ checked Sep 15, 2026	501-1,000	510 contacts →
	Strong evidence “Tegra Medical is an end-to-end contract manufacturing solutions provider, known as the company “where medical devices come to life.” Our customers look to us to manufacture…” Source: RevenueBase Database · checked Sep 15, 2026
17	Tessy Plastics Corp	Partial evidence	Skaneateles, NY, United StatesHQ checked Sep 15, 2026	1,001-5,000	499 contacts →
	Partial evidence “Founded in 1973, Tessy Plastics is a global contract manufacturer headquartered in Skaneateles, NY, specializing in injection molding and custom automated assembly solutions.” Source: RevenueBase Database · checked Sep 15, 2026
18	XLC Services	Partial evidence	Cincinnati, OH, United StatesHQ checked Sep 15, 2026	1,001-5,000	462 contacts →
	Partial evidence “XLC Services, LLC is a single-source provider of distribution and manufacturing support.” Source: RevenueBase Database · checked Sep 15, 2026
19	Mack Molding Company	Partial evidence	Arlington, VT, United StatesHQ checked Sep 15, 2026	1,001-5,000	453 contacts →
	Partial evidence “Mack Molding Co, headquartered in Arlington, VT, provides design through FDA-approved manufacturing services to the medical, commercial, computer & business equipment, energy and…” Source: RevenueBase Database · checked Sep 15, 2026
20	MSI Express	Strong evidence	Portage, IN, United StatesHQ checked Sep 15, 2026	1,001-5,000	443 contacts →
	Strong evidence “MSI Express is a strategic, innovative contract manufacturing and packaging company.” Source: RevenueBase Database · checked Sep 15, 2026
21	RCO Engineering	Partial evidence	Roseville, MI, United StatesHQ checked Sep 15, 2026	501-1,000	438 contacts →
	Partial evidence “Specializing in low-volume manufacturing that Tier 1 suppliers avoid, we offer complete program management under one roof, including emergency tooling and parts, large program…” Source: RevenueBase Database · checked Sep 15, 2026
22	Mack Technologies	Strong evidence	Westford, MA, United StatesHQ checked Sep 15, 2026	1,001-5,000	405 contacts →
	Strong evidence “Mack Technologies is a leading supplier of printed circuit board assembly, systems assembly, and electronics contract manufacturing services for the defense, communications…” Source: RevenueBase Database · checked Sep 15, 2026
23	Hatch Stamping Company	Partial evidence	Chelsea, MI, United StatesHQ checked Sep 15, 2026	501-1,000	401 contacts →
	Partial evidence “Hatch is recognized as a world class leader in the design and manufacturing of metal stampings and assemblies.” Source: RevenueBase Database · checked Sep 15, 2026
24	Sigmatron International	Partial evidence	Elk Grove Village, IL, United StatesHQ checked Sep 15, 2026	1,001-5,000	391 contacts →
	Partial evidence “Service-Driven Electronics Manufacturing.” Source: RevenueBase Database · checked Sep 15, 2026
25	Oberg Industries	Partial evidence	Freeport, PA, United StatesHQ checked Sep 15, 2026	501-1,000	356 contacts →
	Partial evidence “Oberg Industries is a global contract manufacturer producing precision machined and stamped metal components, tooling, and assemblies for some of the world’s most recognized…” Source: RevenueBase Database · checked Sep 15, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: contract manufacturing companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names contract manufacturing companies.
Partial evidence: Its own public description names part of contract manufacturing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name contract manufacturing companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 3,203 contract manufacturing companies based in the United States

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Contract manufacturing companies based in the United States at a glance

As of Sep 15, 2026

25.0%Verified-email coverage

48.8Average contacts per company

11-50Median size (employees)

1.5%Largest-city concentration · San Jose

Sep 15, 2026Page data refreshed

Companies by employee count

1-10

829

11-50

1,194

51-200

853

201-500

198

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 3,203 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among contract manufacturing companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “contract manufacturing companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names contract manufacturing companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among contract manufacturing companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 39,179 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 15, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Contract manufacturing companies by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names contract manufacturing companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many contract manufacturing companies are there based in the United States?

RevenueBase identified 3,203 contract manufacturing companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Sanmina, headquartered in San Jose, tops this list with the largest team on record.

Which city has the most contract manufacturing companies?

San Jose leads with 47 headquartered companies, followed by Rochester (33) and Fremont (32).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 39,179 verified decision-maker contacts tracked across these 3,203 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 15, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.