Companies in New Haven

Q: How many companies are in New Haven?

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

Q: Where does New Haven company data come from?

New Haven 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 New Haven data updated?

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

Q: Can I filter New Haven companies by industry?

Yes. Every New Haven 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 New Haven 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 New Haven data and we will email it within one business day.

Q: Do you offer API access for New Haven data?

Yes. The full New Haven 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 New Haven 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 New Haven 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 New Haven sits a business. 24,918 of them, to be exact, all registered in the United States business register. The biggest single industry is general business services with 930 companies, roughly 4% of everything that does business in the city.

24,918 businesses indexed

Yale UniversityYale University

	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	Yale University	USA	New Haven	105 Wall St	Ct	06511-8917	yale.*****	1701	$6,154,583,000	11,000	Corporation	322	0527385
2	Yale New Haven Hospital, INC.	USA	New Haven	20 York St	Ct	06511	ynhh.*****	1985	$4,571,807,805	30,278	Corporation	77	0267779
3	Knights Of Columbus	USA	New Haven	1 Columbus Plz	Ct	06510-3325	kofc.*****	1882	$2,548,075,018	2,300	Corporation	773	060416470
4	City Of New Haven	USA	New Haven	165 Church St Fl 2	Ct	06510-2010	edhamiltonworks.*****	1633	$1,032,229,805	4,500	Corporation	51	223149569
5	Biohaven Pharmaceutical Holding Company LTD.	USA	New Haven	215 Church St	Ct	06510-1803	biohavenpharma.*****	2022	$462,509,000	928	Corporation	703	5370906
6	East Allen County Schools	USA	New Haven	1240 State Road 930 E	Allen	46774-1700	eacs.*****	1969	$273,854,546	1,100	Corporation	22	N/A
7	Achievement First, INC.	USA	New Haven	470 James St Ste 7	Ct	06513-3175	achievementfirst.*****	2003	$273,187,145	50	Corporation	25	0753424
8	Arvinas, INC.	USA	New Haven	395 Winchester Ave	Ct	06511-1917	arvinas.*****	2013	$262,600,000	246	Corporation	4	5654073
9	Area Cooperative Educational Services CORPORATION	USA	New Haven	370 James St Ste 303	Ct	06513	aces.*****	1969	$181,987,061	844	Corporation	12	1319485
10	South Central Connecticut Regional Water Authority	USA	New Haven	90 Sargent Dr	Ct	06511	rwater.*****	1980	$161,417,789	299	Corporation	9	060975264
11	Yale University Retiree Health Benefits Coverage Trust	USA	New Haven	N/A	Ct	06520	N/A	2011	$152,225,671	2		N/A	N/A
12	Arvinas Operations, INC.	USA	New Haven	5 Science Park	Ct	06511-1966	arvinas.*****	2013	$131,400,000	20	Corporation	4	6850498
13	Alexion Complement Foundation	USA	New Haven	100 College St	Ct	06510-3210	N/A	2007	$110,240,463	2	Corporation	N/A	208963321
14	Cornell Scott-Hill Health CORPORATION	USA	New Haven	400 Columbus Ave	Ct	06519-1233	cornellscott.*****	1971	$109,453,723	425	Corporation	10	0055919
15	Sargent Manufacturing Company	USA	New Haven	100 Sargent Dr	Ct	06536	sargentlock.*****	1985	$82,227,381	900	Corporation	974	2079342
16	Alexion Pharma LLC	USA	New Haven	100 College St	Ct	06510-3210	alexionpharma.*****	2015	$74,597,687	209	Corporation	471	5731587
17	Continuum Of Care, INC.	USA	New Haven	109 Legion Ave	Ct	06519-5506	continuumct.*****	1966	$68,519,019	500	Corporation	13	0057822
18	Albertus Magnus College	USA	New Haven	700 Prospect St	Ct	06511-1224	albertus.*****	1925	$62,216,973	250	Corporation	2	060646520
19	Greenchlor, LLC	USA	New Haven	73 Welton St	Ct	06511-1523	N/A	2008	$62,123,837	1	Partnership of unknown type	N/A	N/A
20	The Community Foundation For Greater New Haven INC	USA	New Haven	70 Audubon St 5f	Ct	06510-1248	cfgnh.*****	1928	$55,709,123	30	Corporation	N/A	0129534
21	Invivyd, INC.	USA	New Haven	209 Church St	Ct	06510-1801	invivyd.*****	2020	$53,426,000	122	Corporation	4	3001612
22	New Haven Public Schools	USA	New Haven	54 Meadow St	Ct	06519-1719	nhps.*****	2007	$52,083,702	756	Corporation	59	N/A
23	Cablecraft Motion Controls LLC	USA	New Haven	2110 Summit St	Allen	46774-9524	cablecraft.*****	2021	$44,979,009	300	Corporation	12	4894886
24	Planned Parenthood Of Southern New England, INC.	USA	New Haven	345 Whitney Ave	Ct	06511-2348	plannedparenthood.*****	1939	$41,045,786	225	Corporation	19	0098961
25	Hopkins School	USA	New Haven	986 Forest Rd	Ct	06515-2501	hopkins.*****	1660	$40,395,351	118	Corporation	N/A	N/A

Showing 25 of 24,918 companies

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Largest companies in New Haven

Which company is the largest in New Haven 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, Yale University comes first in New Haven. It is part of a group with $6.2 billion in yearly revenue. By headcount, Yale New Haven Hospital, INC. comes first with 30,278 employees. We only looked at the 17,404 corporations in New Haven for this; sole traders, foundations and other legal forms are left out.

The two tables below show how all 24,918 companies in New Haven are spread across revenue and headcount bands.

Yearly revenue

52.2%of companies have less than $100,000 in yearly revenue

Revenue (USD)	Count	Share
up to $100,000	13,004	52.2%
$100,000 to $500,000	8,744	35.1%
$500,000 to $1M	678	2.7%
$1M to $5M	481	1.9%
$5M to $10M	81	0.3%
$10M to $50M	75	0.3%
$50M to $100M	8	<0.1%
$100M to $500M	10	<0.1%
$1B or more	4	<0.1%
Unknown	1,833	7.4%

Headcount

85.6%of companies have 1 to 4 employees

Employees	Count	Share
1-4	21,339	85.6%
5-9	1,818	7.3%
10-19	631	2.5%
20-49	442	1.8%
50-99	193	0.8%
100-199	76	0.3%
200-499	35	0.1%
500-999	20	0.1%
1,000-4,999	6	<0.1%
5,000-9,999	1	<0.1%
10,000+	1	<0.1%
Unknown	356	1.4%

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

Largest industries in New Haven

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

General business services

930 companies

SIC 7389

View all 930 in our tool →

Restaurants and eating places

908 companies

SIC 5812

View all 908 in our tool →

General Contractors-Single-Family Houses

777 companies

SIC 1521

View all 777 in our tool →

Operators of Nonresidential Buildings

606 companies

SIC 6512

View all 606 in our tool →

Real estate agents and managers

603 companies

SIC 6531

View all 603 in our tool →

Religious Organizations

577 companies

SIC 8661

View all 577 in our tool →

Offices and Clinics of Doctors of Medicine

523 companies

SIC 8011

View all 523 in our tool →

Business Consulting Services, Not Elsewhere Classified

489 companies

SIC 8748

View all 489 in our tool →

All industries in New Haven

Together, general business services, restaurants and eating places and General Contractors-Single-Family Houses make up the top three industries in New Haven, accounting for 10% of the city's commercial activity. The oldest company we can find in New Haven is Yale University, founded in 1701, with Dixwell Ave Congregation United Church Of Christ not far behind. They are still here, along with 24,916 other businesses in New Haven.

Yale sets the tone in New Haven, spinning off biotech labs and medical work, while the harbor and a famous pizza tradition keep older trades alive. 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 Establishments3,790
Business Services, Not Elsewhere Classified930
Eating Places908
General Contractors-Single-Family Houses777
Operators of Nonresidential Buildings606
Real Estate Agents and Managers603
Religious Organizations577
Offices and Clinics of Doctors of Medicine523
Business Consulting Services, Not Elsewhere Classified489
Legal Services473
Other industries15,242

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How you receive New Haven 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 New Haven company data.