B2B cold email software in Connecticut
Verified federal data on the Connecticut business market, plus outreach guides for its largest cities and service industries. Acqro researches every company on your list and writes each email from what it finds.
Onboarding in batches. No credit card to join.
How many businesses are in Connecticut?
Connecticut had 89,234 business establishments in 2023, ranking 30th among the 50 states and DC, with 25,153 of them employing 10 to 249 people. Source: U.S. Census Bureau County Business Patterns. Acqro is AI cold email software that researches each of those companies before writing to them.
The Connecticut B2B market in numbers
- Business establishments
- 89,234−0.1% vs 2022Census CBP 2023
- Firms with 10–249 employees
- 25,153Census CBP 2023
- Paid employees
- 1,536,698Census CBP 2023
- Average annual pay
- $76,505Census CBP 2023
- Professional services firms
- 9,275Census CBP 2023, NAICS 54
- Share of US establishments
- 1.1%Census CBP 2023
71.1% of establishments in Connecticut have fewer than 10 employees, below the 73.0% share for the United States. The 25,153 establishments with 10 to 249 employees are where most B2B lists should start: large enough to have a budget and a defined buyer, small enough that an owner or department head still makes the call and reads their own email.
By employment, the largest sectors are health care and social assistance (19.0% of jobs) and retail trade (11.8% of jobs). Relative to the national mix, educational services (5.3% locally against 2.8% nationally) and finance and insurance (7.8% locally against 5.0% nationally) stand out, which makes them natural first segments for outbound.
The number of establishments changed by −0.1% between 2022 and 2023, slower than the +0.8% change for the United States. New and growing businesses are the accounts most likely to be choosing vendors for the first time, so pair that list with research on hiring, new locations and leadership changes before writing a single email.
Largest industries in Connecticut
Sectors ranked by paid employment, compared with the national mix.
| Sector | Establishments | Employees | Avg. annual pay | Share of jobs | US share |
|---|---|---|---|---|---|
| Health care and social assistance | 11,961 | 292,377 | $63,041 | 19.0% | 15.8% |
| Retail trade | 11,696 | 181,494 | $40,009 | 11.8% | 11.5% |
| Manufacturing | 3,735 | 158,521 | $89,149 | 10.3% | 8.8% |
| Accommodation and food services | 9,050 | 141,070 | $28,972 | 9.2% | 10.4% |
| Finance and insurance | 5,629 | 119,436 | $177,844 | 7.8% | 5.0% |
| Professional, scientific and technical services | 9,275 | 106,291 | $114,263 | 6.9% | 7.4% |
| Administrative, support and waste management services | 5,404 | 90,114 | $58,906 | 5.9% | 9.6% |
| Educational services | 1,527 | 81,003 | $59,814 | 5.3% | 2.8% |
| Wholesale trade | 3,739 | 68,400 | $102,748 | 4.5% | 4.5% |
| Construction | 8,152 | 61,816 | $84,258 | 4.0% | 5.5% |
Where Connecticut businesses are concentrated
Counties ranked by number of business establishments.
| County | Establishments | Share of state | Employees |
|---|---|---|---|
| Capitol Planning Region | 23,642 | 26.5% | 473,777 |
| Western Connecticut Planning Region | 19,955 | 22.4% | 292,288 |
| South Central Connecticut Planning Region | 13,779 | 15.4% | 263,675 |
| Naugatuck Valley Planning Region | 9,114 | 10.2% | 145,193 |
| Greater Bridgeport Planning Region | 6,941 | 7.8% | 107,114 |
| Southeastern Connecticut Planning Region | 5,883 | 6.6% | 100,654 |
| Lower Connecticut River Valley Planning Region | 4,489 | 5.0% | 65,436 |
| Northwest Hills Planning Region | 2,909 | 3.3% | 31,833 |
| Northeastern Connecticut Planning Region | 1,751 | 2.0% | 25,003 |
Cold email guides for Connecticut cities
Each guide covers the county that contains the city.
| City | County | Establishments in county |
|---|---|---|
| Bridgeport | Greater Bridgeport Planning Region | 6,941 |
| Hartford | Capitol Planning Region | 23,642 |
| New Haven | South Central Connecticut Planning Region | 13,779 |
| Stamford | Western Connecticut Planning Region | 19,955 |
B2B service industries in Connecticut
Establishment counts in Connecticut for the service industries Acqro customers work in. Each links to an outreach guide.
| Industry | Census industry (NAICS) | Establishments |
|---|---|---|
| Law Firms | Offices of Lawyers | 1,953 |
| Commercial Insurance Brokers | Insurance Agencies and Brokerages | 1,229 |
| Management Consultants | Administrative Management and General Management Consulting Services | 760 |
| Commercial Real Estate Brokers | Offices of Real Estate Agents and Brokers | 755 |
| Commercial Cleaning Companies | Janitorial Services | 663 |
| CPA and Accounting Firms | Offices of Certified Public Accountants | 646 |
| Healthtech Vendors | Computer Systems Design Services | 568 |
| Software Development Agencies | Custom Computer Programming Services | 539 |
| SEO Agencies | Marketing Consulting Services | 487 |
| Staffing Agencies | Temporary Help Services | 402 |
| Financial Advisory Firms | Investment Advice | 362 |
| Architecture Firms | Architectural Services | 239 |
| SaaS Companies | Software Publishers | 188 |
| Marketing Agencies | Advertising Agencies | 187 |
| Office Design Firms | Interior Design Services | 184 |
| Corporate Caterers | Caterers | 183 |
| Commercial Waste Services | Solid Waste Collection | 160 |
| Video Production Companies | Motion Picture and Video Production | 141 |
| Logistics Providers | Freight Transportation Arrangement | 137 |
| Cybersecurity Firms | Other Computer Related Services | 118 |
| Corporate Training Providers | Professional and Management Development Training | 107 |
| HR Consultancies | Human Resources Consulting Services | 107 |
| Executive Search Firms | Executive Search Services | 103 |
| PR Agencies | Public Relations Agencies | 82 |
| Event Management Companies | Convention and Trade Show Organizers | 58 |
| Payroll Providers | Payroll Services | 55 |
| Managed Service Providers | Computer Facilities Management Services | 53 |
| Merchant Services Providers | Financial Transactions Processing, Reserve, and Clearinghouse Activities | 50 |
| Business Telecom and VoIP Providers | Telecommunications Resellers | 35 |
| Translation Services | Translation and Interpretation Services | 12 |
Cold email in Connecticut, answered
How many businesses are in Connecticut?
Connecticut had 89,234 business establishments in 2023, employing 1,536,698 people. Source: U.S. Census Bureau, County Business Patterns 2023.
What are the largest industries in Connecticut?
By paid employment in 2023: health care and social assistance (19.0% of jobs), retail trade (11.8% of jobs) and manufacturing (10.3% of jobs). Source: U.S. Census Bureau, County Business Patterns 2023.
Is cold email legal in the United States?
Yes. The federal CAN-SPAM Act permits commercial email to business contacts without prior consent, provided the message identifies the sender accurately, uses a truthful subject line, includes a valid physical postal address and a working opt-out, and honours opt-out requests promptly. CAN-SPAM applies in every state and preempts most state commercial email laws, except provisions aimed at falsity or deception. This is general information, not legal advice.
Explore related pages
Guides for Connecticut
Other states
Sources and methodology
Every figure on this page comes from a federal statistical release and is shown with its source and reference year. Figures the agencies withhold or publish with high noise are left out rather than estimated. Page updated September 17, 2026.
- U.S. Census Bureau, County Business Patterns 2023 and 2022: establishments, paid employment for the pay period including March 12, annual payroll, and establishments by employment size. Industries use NAICS 2017 codes.
Reach the right Connecticut accounts
Tell us where to reach you and we'll open the next seat.
Prefer a conversation? Get in touch.