Companies in Dayton

Q: How many companies are in Dayton?

Our Dayton business directory currently lists every registered legal entity with a Dayton address in the official United States business register. The exact count is shown live at the top of this page.

Q: Where does Dayton company data come from?

Dayton records are sourced directly from the official United States business register and enriched with 50+ data points: revenue, employees, industry codes, contact details, and ownership.

Q: How often is Dayton data updated?

Core registry fields are refreshed weekly. Enriched fields (revenue, employees, contact) are refreshed monthly so your Dayton list never goes stale.

Q: Can I filter Dayton companies by industry?

Yes. Every Dayton record is tagged with SIC industry codes. You can request your directory filtered by one or several SIC codes, employee size bands, or revenue thresholds.

Q: Which file formats do you deliver?

Excel (.xlsx), CSV, and JSON. For API customers, data is streamed as paginated JSON. Custom formats (Parquet, SQL dump) are available on request.

Q: Is the Dayton data GDPR compliant?

Yes. We only deliver legal-entity data and publicly listed business contact details. We do not include personal data of natural persons unless required by the company register itself (e.g. sole traders).

Q: Can I get a sample before buying?

Yes. Request a free 100-record sample of Dayton data and we will email it within one business day.

Q: Do you offer API access for Dayton data?

Yes. The full Dayton dataset is available through our REST API with the same filters as our directory builder. See our API page for pricing tiers.

Q: How fast can Dayton data be delivered?

Standard Excel and CSV directories are delivered within 24 hours. API access is provisioned within one business day. Rush delivery (same-day) is available on request.

Q: Can I get historical Dayton data?

Snapshot data going back 3 years is available for most fields, and 7+ years for core registry fields. Useful for trend analysis and churn studies - ask for a custom quote.

Behind every street in Dayton sits a business. 92,720 of them, to be exact, all registered in the United States business register. The biggest single industry is general business services with 5,797 companies, roughly 6% of everything that does business in the city.

92,720 businesses indexed

Caresource Ohio, INC.Caresource Ohio, INC.

	Company Name	Country	City	Address 1	State/Province	Postal Code	Website	Founding Year	Yearly Revenue in U.S. Dollars	Employees Total	Business Legal Type - Description	Number of Companies in Group	Company Registration Number
1	Caresource Ohio, INC.	USA	Dayton	230 N Main St	Montgomery	45402	caresource.*****	1985	$8,559,845,484	82	Corporation	17	656665
2	Winsupply INC.	USA	Dayton	3110 Kettering Blvd	Montgomery	45439-1924	winsupplyinc.*****	1956	$3,020,343,663	1,040	Corporation	769	2305611
3	Kettering Adventist Healthcare	USA	Dayton	3535 Southern Blvd	Montgomery	45429-1221	ketteringhealth.*****	1982	$2,909,664,000	6,800	Corporation	121	598305
4	Med America Health Systems CORPORATION	USA	Dayton	1 Wyoming St	Montgomery	45409-2722	medamerica.*****	1982	$1,632,924,267	24,278	Corporation	54	311040228
5	Miami Valley Hospital	USA	Dayton	1 Wyoming St	Montgomery	45409-2711	premierhealth.*****	1890	$1,554,340,887	8,403	Corporation	54	17725
6	Caresource	USA	Dayton	230 N Main St	Montgomery	45402-1263	caresource.*****	1989	$1,324,786,071	3,811	Corporation	17	1086420
7	Dpl LLC	USA	Dayton	1065 Woodman Dr	Montgomery	45432-1438	aes-ohio.*****	1911	$1,070,600,000	707	Corporation	690	662284
8	The Dayton Power And Light Company	USA	Dayton	1065 Woodman Dr	Montgomery	45432-1423	dpandl.*****	1911	$1,061,800,000	721	Corporation	690	310258470
9	Dayton Osteopathic Hospital	USA	Dayton	405 W Grand Ave	Montgomery	45429	ketteringhealth.*****	1939	$918,617,000	1,800	Corporation	121	178019
10	County Of Montgomery	USA	Dayton	451 W 3rd St	Montgomery	45422-0001	mcohio.*****	1788	$713,837,352	5,000	Corporation	101	N/A
11	Kettering Memorial Hospital	USA	Dayton	3737 Southern Blvd	Montgomery	45429-1262	kc.*****	2007	$689,541,989	11		N/A	N/A
12	The University Of Dayton	USA	Dayton	300 College Park Ave	Montgomery	45469-0002	udayton.*****	1850	$685,374,000	4,500	Corporation	36	226846
13	Dayton Children's Hospital	USA	Dayton	1 Childrens Plz	Montgomery	45404-1815	childrensdayton.*****	1919	$661,365,054	3,300	Corporation	9	85655
14	Stress CARE/BRIDGES	USA	Dayton	405 W Grand Ave	Montgomery	45405-7538	ketteringhealth.*****	2000	$650,965,832	40	Corporation	N/A	N/A
15	Rex American Resources CORPORATION	USA	Dayton	7720 Paragon Rd	Montgomery	45459-4050	rexamerican.*****	1980	$650,487,000	132	Corporation	89	2028253
16	Woolpert, INC.	USA	Dayton	4454 Idea Center Blvd	Montgomery	45430-1500	woolpert.*****	1935	$535,468,356	1,931	Corporation	73	1474720
17	Src Liquidation LLC	USA	Dayton	111 W 1st St	Montgomery	45402-1154	N/A	1912	$447,062,190	3,700	Corporation	7	33787
18	Monrovia Nursery Company	USA	Dayton	13455 Se Lafayette Hwy	Yamhill	97114-8441	monrovia.*****	1926	$436,679,121	2,000	Corporation	11	951550929
19	Dayton Freight Lines, INC.	USA	Dayton	6450 Poe Ave Ste 311	Montgomery	45414-2647	daytonfreight.*****	1981	$332,089,985	4,000	Corporation	60	556008
20	City Of Dayton	USA	Dayton	101 W 3rd St	Montgomery	45402-1859	daytonohio.*****	1796	$331,037,744	2,000	Corporation	45	N/A
21	Heartland Health & Wellness Fund	USA	Dayton	7250 Poe Ave Ste 300	Montgomery	45414-2698	heartlandwellnessfund.*****	1957	$330,278,227	7	Corporation	N/A	N/A
22	Lion Group, INC.	USA	Dayton	7200 Poe Ave Ste 400	Montgomery	45414-2798	lionprotects.*****	2014	$327,393,238	760	Corporation	25	N/A
23	The Foundation For Community Blood CENTER/COMMUNITY Tissue Services	USA	Dayton	349 S Main St	Montgomery	45402-2715	cbccts.*****	1964	$302,991,373	520	Corporation	15	310684163
24	Dayton Public School District	USA	Dayton	136 S Ludlow St	Montgomery	45402-1813	dps.*****	1905	$301,114,185	197	Corporation	72	N/A
25	Stratacache, INC.	USA	Dayton	40 N Main St Ste 2600	Montgomery	45423-1008	stratacache.*****	1990	$249,076,034	1,200	Corporation	38	967010

Showing 25 of 92,720 companies

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Largest companies in Dayton

Which company is the largest in Dayton depends on how you measure. You can look at valuation, at revenue or at how many people work there. Valuations are private for most companies, so here we stick to revenue and headcount.

By revenue, Caresource Ohio, INC. comes first in Dayton. It is part of a group with $8.6 billion in yearly revenue. By headcount, Miami Valley Hospital comes first with 8,403 employees. We only looked at the 65,726 corporations in Dayton for this; sole traders, foundations and other legal forms are left out.

The two tables below show how all 92,720 companies in Dayton are spread across revenue and headcount bands.

Yearly revenue

61.3%of companies have less than $100,000 in yearly revenue

Revenue (USD)	Count	Share
up to $100,000	56,849	61.3%
$100,000 to $500,000	26,268	28.3%
$500,000 to $1M	1,770	1.9%
$1M to $5M	1,524	1.6%
$5M to $10M	242	0.3%
$10M to $50M	191	0.2%
$50M to $100M	23	<0.1%
$100M to $500M	27	<0.1%
$500M to $1B	8	<0.1%
$1B or more	8	<0.1%
Unknown	5,810	6.3%

Headcount

87.9%of companies have 1 to 4 employees

Employees	Count	Share
1-4	81,529	87.9%
5-9	6,042	6.5%
10-19	2,015	2.2%
20-49	1,313	1.4%
50-99	515	0.6%
100-199	192	0.2%
200-499	85	0.1%
500-999	27	<0.1%
1,000-4,999	18	<0.1%
5,000-9,999	1	<0.1%
Unknown	983	1.1%

Source: business register and CompanyData. "Unknown" means no published figure.

Largest industries in Dayton

The biggest industry groups in Dayton by registered company count, with the top five companies by revenue in each.

General business services

5,797 companies

SIC 7389

View all 5,797 in our tool →

General Contractors-Single-Family Houses

2,337 companies

SIC 1521

View all 2,337 in our tool →

Operators of Nonresidential Buildings

2,295 companies

SIC 6512

View all 2,295 in our tool →

Restaurants and eating places

2,282 companies

SIC 5812

View all 2,282 in our tool →

Business Consulting Services, Not Elsewhere Classified

2,053 companies

SIC 8748

View all 2,053 in our tool →

Investors, Not Elsewhere Classified

1,944 companies

SIC 6799

View all 1,944 in our tool →

Transportation Services, Not Elsewhere Classified

1,845 companies

SIC 4789

View all 1,845 in our tool →

Religious Organizations

1,801 companies

SIC 8661

View all 1,801 in our tool →

All industries in Dayton

Together, general business services, General Contractors-Single-Family Houses and Operators of Nonresidential Buildings make up the top three industries in Dayton, accounting for 11% of the city's commercial activity. The oldest company we can find in Dayton is City Of Dayton, founded in 1796, with Butler Township Trustees not far behind. They are still here, along with 92,718 other businesses in Dayton.

The Wright brothers ran their bicycle shop in Dayton, and aviation never left, with a major air force base and aerospace research anchoring the local economy. All of them are in our data. Look up a company in the table at the top of this page, get the full list delivered as an Excel file, or pull the records straight into your own systems through our API.

Nonclassifiable Establishments16,400
Business Services, Not Elsewhere Classified5,797
General Contractors-Single-Family Houses2,337
Operators of Nonresidential Buildings2,295
Eating Places2,282
Business Consulting Services, Not Elsewhere Classified2,053
Investors, Not Elsewhere Classified1,944
Transportation Services, Not Elsewhere Classified1,845
Religious Organizations1,801
Real Estate Agents and Managers1,653
Other industries54,313

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How you receive Dayton business data

Choose how you want to receive the data. Every company comes with 50+ fields, from address and industry to revenue and contact details, sourced from official United States business registers.

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Frequently Asked Questions

Common questions about searching, filtering, and ordering Dayton company data.