B2B data

Manufacturing Companies in Ohio

Ken's database lists 8,337 manufacturing companies headquartered in Ohio as of Oct 17, 2026. The largest group, 62%, has 1-10 employees.

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Query

Industry: "Manufacturing", excluding "Oil and Gas", "Telecommunications" and "Renewable Energy Power Generation"; HQ state: Ohio; HQ country: United States; Employees on record: 1 or more

Companies: 8,337
1-10 employees: 5,187 (62%)
11-50 employees: 2,344 (28%)
51-200 employees: 397 (5%)

Ken's database, Oct 17, 2026. Headquarters counts, refreshed weekly.

Search these companies free in KenFree to search, 1 credit ($0.02) per valid email

How Many Manufacturing Companies Are in Ohio?

In short 8,337 manufacturing companies in Ken's database have their headquarters in Ohio (Oct 17, 2026).

Ken's database lists 8,337 manufacturing companies with headquarters in Ohio. The largest group, 62%, has 1-10 employees. A company with only a branch office in Ohio is not counted.

Manufacturing Companies in Ohio by employee range, Oct 17, 2026
Employees	Companies	Share
1-10	5,187	62%
11-50	2,344	28%
51-200	397	5%
201-500	83	1%
501-1,000	40	<1%
1,001-5,000	12	<1%
5,001-10,000	1	<1%
10,001+	11	<1%
Not listed	262	3%
Total	8,337	100%

Employee range as listed on each company profile, for the companies in the count. Not listed means the profile shows no size.

Largest Manufacturing Companies in Ohio

In short By employee count in Ken's database, the largest is GE Aerospace in Cincinnati with 10,001+ employees.

Largest manufacturing companies headquartered in Ohio by employee count, Oct 17, 2026
Company	City	Employees
GE Aerospace	Cincinnati	10,001+
Procter & Gamble	Cincinnati	10,001+
Sherwin-Williams	Cleveland	10,001+
The Goodyear Tire & Rubber Company	Akron	10,001+
Parker Hannifin	Cleveland	10,001+
Avery Dennison	Mentor	10,001+
Vertiv	Columbus	10,001+
Dana Incorporated	Maumee	10,001+
O-I	Perrysburg	10,001+
Bob Evans Farms, Inc.	New Albany	5,001-10,000

Company-level data from Ken's database, ranked by employee count. This table reads each company's state from its address, so it can include large companies the count above misses because their record stores the state with a ZIP code. Public bodies, schools, job boards and companies with 50 employees or fewer are left out.

How We Counted

In short We counted manufacturing companies in Ken's database with headquarters in Ohio on Oct 17, 2026.

Filter: Companies in Manufacturing and its sub-industries, excluding oil and gas, telecommunications and power generation, with headquarters in Ohio, United States, and at least one employee on record.
Headquarters only. Companies with just an office in Ohio are not counted.
These are companies in Ken's database (250M people and 24M companies), not every company that exists.
Some records store the state with a ZIP code, and the state filter misses those, so read the count as a floor. The largest-companies table reads the state from each record's address, so it includes them.
Counts as of Oct 17, 2026. We check them weekly, and the dates move only when a count or a listed company changes.
Pages publish only at 50 companies or more. Ken is our product, and these counts come from its company database.

The request body for POST /v1/search/companies

{"industries":["Manufacturing"],"excludeIndustries":["Oil and Gas","Telecommunications","Renewable Energy Power Generation"],"countries":["US"],"states":["Ohio"],"employeesCount":{"min":1},"pageSize":0}

FAQ

How many manufacturing companies are in Ohio?

Ken's database lists 8,337 manufacturing companies headquartered in Ohio as of Oct 17, 2026.

Which manufacturing companies in Ohio have the most employees?

In Ken's database, GE Aerospace, Procter & Gamble and Sherwin-Williams have the most employees of the manufacturing companies headquartered in Ohio.

Can I get a list of manufacturing companies in Ohio?

Yes. Run the filter on this page in Ken Search. Searching is free, and a valid email costs 1 credit ($0.02).

How often is this count updated?

We check it weekly. The dates on this page move only when a count or a listed company changes, so an older date means nothing moved since.

Why does this count differ from other sources?

Sources count differently: headquarters or any office, industry labels or government codes, and how many companies they track. This page counts headquarters in Ken's database with the filter shown above.

Do This in Ken

Search these companies in Ken

Open Ken Search with the same filter to see all 8,337 companies, narrow them by size or city, and find a valid email for the people you want to reach.

Set these filters: Industry: "Manufacturing", excluding "Oil and Gas", "Telecommunications" and "Renewable Energy Power Generation"; HQ state: Ohio; HQ country: United States; Employees on record: 1 or more.
Narrow by employee range or city.
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Module: Ken Search
Open in Ken: /waitlist
API: POST /v1/search/companies
MCP tool: search_search_companies
Cost: Free to search, 1 credit ($0.02) per valid email

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Sources

Every source, with the date we checked it
Source	URL	Checked
Ken's company database, queried through Ken Search (POST /v1/search/companies)	app.ken.so	2026-10-17
Ken pricing (credit cost per valid email)	/pricing	2026-10-17

Changelog

Oct 17, 2026Page published with counts from Ken's database.