B2B contacts in Illinois
2,325,786 business contacts in Illinois, every one with a LinkedIn profile: 1,175,163 with a work email (1,134,858 checked in 2026) and 505,542 with a phone (426,262 mobile). Updated 2026-10-04. Filter further, then get the list as CSV, in your CRM or by API.
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By industry
- Hospitals and Health Care: 243,985
- Insurance: 167,451
- Higher Education: 130,403
- Financial Services: 117,153
- Machinery Manufacturing: 76,698
- IT Services and IT Consulting: 71,072
- Food and Beverage Manufacturing: 58,328
- Business Consulting and Services: 56,958
- Manufacturing: 51,380
- Software Development: 49,154
By department
- Sales: 229,276
- Operations & Logistics: 202,542
- Executive & General Management: 189,095
- Finance & Accounting: 169,895
- Healthcare & Nursing: 145,353
- Education & Training: 96,754
- Software Engineering: 88,929
- Administrative: 86,988
- Marketing & Communications: 86,948
- Engineering (Non-Software): 86,732
By level
- Staff: 1,198,353
- Manager: 487,792
- Senior: 250,758
- Director / Head: 190,888
- VP: 71,180
- C-suite: 57,252
- Intern / Student: 38,676
- Owner / Founder: 30,887
By company size
- 10,000+: 800,062
- 1,000-4,999: 405,834
- 100-249: 314,292
- 5,000-9,999: 200,738
- 20-99: 200,252
- 250-499: 159,231
- 500-999: 150,847
- 5-19: 54,052
- 1-4: 40,475
- Unknown: 3
Companies in Illinois with the most decision makers
- Northern Trust: 5,200 decision makers
- Gallagher: 5,143 decision makers
- Takeda: 4,433 decision makers
- Abbott: 3,987 decision makers
- Mars: 2,927 decision makers
- Allstate Financial Services: 2,569 decision makers
- State Farm Inc: 2,431 decision makers
- GE Healthcare: 2,287 decision makers
- RSM US LLP: 2,239 decision makers
- Hub International Ltd: 2,238 decision makers
Roles in Illinois
- Healthcare professionals: 114,326
- Sales professionals: 110,299
- Finance professionals: 89,578
- Education professionals: 84,805
- Operations professionals: 81,056
- Operations managers: 80,317
- Sales managers: 79,541
- Administrative professionals: 63,658
- Engineering professionals: 54,791
- Executive directors: 52,726
- C-suite executives: 52,708
- Manufacturing professionals: 51,744
- Software engineering professionals: 43,517
- IT professionals: 41,536
- Retail professionals: 39,086
- Marketing professionals: 38,088
- Customer success professionals: 36,994
- Retail managers: 34,699
- Legal professionals: 33,980
- Senior software engineering professionals: 32,931
- Finance managers: 31,592
- Executive VPs: 29,129
- HR professionals: 28,048
- Data and AI professionals: 27,149
Industries in Illinois
- Hospitals and Health Care: 243,985
- Insurance: 167,451
- Higher Education: 130,403
- Financial Services: 117,153
- Machinery Manufacturing: 76,698
- IT Services and IT Consulting: 71,072
- Food and Beverage Manufacturing: 58,328
- Business Consulting and Services: 56,958
- Manufacturing: 51,380
- Software Development: 49,154
- Food and Beverage Services: 48,384
- Law Practice: 45,227
- Non-profit Organizations: 44,620
- Construction: 44,605
- Real Estate: 43,476
- Accounting: 40,226
- Retail: 38,159
- Restaurants: 37,884
- Airlines and Aviation: 37,009
- Pharmaceutical Manufacturing: 32,825
- Retail Pharmacies: 31,386
- Government Administration: 30,176
- Advertising Services: 28,204
- Medical Equipment Manufacturing: 27,948
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