Plumbing businesses in Illinois
As of October 29, 2026, DealFlow OS tracks 1,625 plumbing businesses in Illinois, compared with 4,156 establishments with paid employees in the U.S. Census Bureau's 2022 County Business Patterns.
Updated
Plumbing businesses
1,625
With a website
79%
With a phone number
99%
Build the Illinois plumbing list
Open the Deal Finder with Plumbing and Illinois prefilled — same 1,625 count, phone and website on every row.
Top cities
- 1.Chicago192
- 2.Elgin25
- 3.Naperville22
- 4.Bloomington20
- 5.Plainfield19
- 6.Schaumburg18
- 7.Downers Grove17
- 8.Joliet17
Compared with the Census
- DealFlow OS (October 29, 2026)
- 1,625
- Census CBP 2022 (NAICS 238220)
- 4,156
NAICS 238220: Plumbing, heating, and air-conditioning contractors. NAICS 238220 combines plumbing and HVAC contractors, so the Census figure covers both trades.
Source: U.S. Census Bureau, County Business Patterns 2022 — excludes sole proprietors (non-employer businesses).
Frequently asked questions
How many plumbing businesses are there in Illinois?
As of October 29, 2026, DealFlow OS tracks 1,625 plumbing businesses in Illinois, compared with 4,156 establishments with paid employees in the U.S. Census Bureau's 2022 County Business Patterns. Source: U.S. Census Bureau, County Business Patterns 2022 — excludes sole proprietors (non-employer businesses).
What share of plumbing businesses in Illinois have a website or phone number?
79% of the 1,625 plumbing businesses DealFlow OS tracks in Illinois list a website and 99% list a phone number.
Which cities in Illinois have the most plumbing businesses?
Chicago (192), Elgin (25), Naperville (22) lead the state.
Why is the DealFlow OS count different from the Census number?
County Business Patterns counts establishments with paid employees and excludes sole proprietors (non-employer businesses). DealFlow OS counts plumbing businesses found in public business listings, including owner-operators without employees. NAICS 238220 combines plumbing and HVAC contractors, so the Census figure covers both trades.
How do I get a list of plumbing businesses in Illinois?
Open the Deal Finder with Plumbing and Illinois prefilled to see the same 1,625 count, preview the rows, and export the list with phone numbers and websites.
Plumbing in other states
Other industries in Illinois
Thinking about buying one? How to acquire a plumbing business · Plumbing by state