B2B cold email software in Wisconsin
Verified federal data on the Wisconsin 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.
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How many businesses are in Wisconsin?
Wisconsin had 144,774 business establishments in 2023, ranking 21st among the 50 states and DC, with 43,185 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 Wisconsin B2B market in numbers
- Business establishments
- 144,774+0.2% vs 2022Census CBP 2023
- Firms with 10–249 employees
- 43,185Census CBP 2023
- Paid employees
- 2,642,958Census CBP 2023
- Average annual pay
- $61,090Census CBP 2023
- Professional services firms
- 11,680Census CBP 2023, NAICS 54
- Share of US establishments
- 1.7%Census CBP 2023
69.3% of establishments in Wisconsin have fewer than 10 employees, below the 73.0% share for the United States. The 43,185 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 manufacturing (18.2% of jobs) and health care and social assistance (15.5% of jobs). Relative to the national mix, manufacturing (18.2% locally against 8.8% nationally) stand out, which makes them natural first segments for outbound.
The number of establishments changed by +0.2% 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 Wisconsin
Sectors ranked by paid employment, compared with the national mix.
| Sector | Establishments | Employees | Avg. annual pay | Share of jobs | US share |
|---|---|---|---|---|---|
| Manufacturing | 8,479 | 479,846 | $68,429 | 18.2% | 8.8% |
| Health care and social assistance | 17,592 | 410,656 | $62,018 | 15.5% | 15.8% |
| Retail trade | 18,044 | 312,489 | $34,687 | 11.8% | 11.5% |
| Accommodation and food services | 15,530 | 243,238 | $21,772 | 9.2% | 10.4% |
| Administrative, support and waste management services | 8,048 | 170,012 | $47,283 | 6.4% | 9.6% |
| Finance and insurance | 8,673 | 139,100 | $105,175 | 5.3% | 5.0% |
| Construction | 14,679 | 133,159 | $83,519 | 5.0% | 5.5% |
| Professional, scientific and technical services | 11,680 | 124,811 | $85,979 | 4.7% | 7.4% |
| Wholesale trade | 6,489 | 124,641 | $81,208 | 4.7% | 4.5% |
| Transportation and warehousing | 5,848 | 121,545 | $55,221 | 4.6% | 4.7% |
Where Wisconsin businesses are concentrated
Counties ranked by number of business establishments.
| County | Establishments | Share of state | Employees |
|---|---|---|---|
| Milwaukee County | 20,466 | 14.1% | 435,400 |
| Dane County | 14,765 | 10.2% | 314,435 |
| Waukesha County | 12,761 | 8.8% | 246,232 |
| Brown County | 6,722 | 4.6% | 142,969 |
| Outagamie County | 5,304 | 3.7% | 101,784 |
| Racine County | 4,114 | 2.8% | 69,594 |
| Winnebago County | 3,784 | 2.6% | 91,036 |
| Marathon County | 3,436 | 2.4% | 65,770 |
| Washington County | 3,427 | 2.4% | 54,404 |
| Kenosha County | 3,403 | 2.4% | 67,834 |
Cold email guides for Wisconsin cities
Each guide covers the county that contains the city.
B2B service industries in Wisconsin
Establishment counts in Wisconsin for the service industries Acqro customers work in. Each links to an outreach guide.
| Industry | Census industry (NAICS) | Establishments |
|---|---|---|
| Commercial Insurance Brokers | Insurance Agencies and Brokerages | 2,587 |
| Commercial Real Estate Brokers | Offices of Real Estate Agents and Brokers | 2,071 |
| Law Firms | Offices of Lawyers | 1,716 |
| Commercial Cleaning Companies | Janitorial Services | 1,267 |
| Staffing Agencies | Temporary Help Services | 1,075 |
| Management Consultants | Administrative Management and General Management Consulting Services | 963 |
| Software Development Agencies | Custom Computer Programming Services | 759 |
| Healthtech Vendors | Computer Systems Design Services | 690 |
| CPA and Accounting Firms | Offices of Certified Public Accountants | 686 |
| SEO Agencies | Marketing Consulting Services | 587 |
| Financial Advisory Firms | Investment Advice | 450 |
| Logistics Providers | Freight Transportation Arrangement | 234 |
| Architecture Firms | Architectural Services | 232 |
| Corporate Caterers | Caterers | 208 |
| Commercial Waste Services | Solid Waste Collection | 208 |
| SaaS Companies | Software Publishers | 201 |
| Marketing Agencies | Advertising Agencies | 178 |
| Managed Service Providers | Computer Facilities Management Services | 159 |
| Office Design Firms | Interior Design Services | 127 |
| Video Production Companies | Motion Picture and Video Production | 120 |
| Cybersecurity Firms | Other Computer Related Services | 111 |
| Corporate Training Providers | Professional and Management Development Training | 110 |
| HR Consultancies | Human Resources Consulting Services | 106 |
| PR Agencies | Public Relations Agencies | 92 |
| Executive Search Firms | Executive Search Services | 89 |
| Business Telecom and VoIP Providers | Telecommunications Resellers | 83 |
| Payroll Providers | Payroll Services | 76 |
| Event Management Companies | Convention and Trade Show Organizers | 63 |
| Merchant Services Providers | Financial Transactions Processing, Reserve, and Clearinghouse Activities | 58 |
| Translation Services | Translation and Interpretation Services | 31 |
Cold email in Wisconsin, answered
How many businesses are in Wisconsin?
Wisconsin had 144,774 business establishments in 2023, employing 2,642,958 people. Source: U.S. Census Bureau, County Business Patterns 2023.
What are the largest industries in Wisconsin?
By paid employment in 2023: manufacturing (18.2% of jobs), health care and social assistance (15.5% of jobs) and retail trade (11.8% 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 Wisconsin
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.
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