317-622-8970Search all companies →Construction Companies in Illinois
6,047 companies in Construction in Illinois.
Explore 6,047 Construction in Illinois listed with contact details, employee size, revenue, and NAICS/SIC codes. Compare suppliers and service providers side by side and reach the right companies directly, or view the same industry in Construction in California, Construction in Florida, Construction in Texas.
Largest Construction in Illinois companies by revenue
The highest-revenue companies in this directory. Open any profile for its full firmographics.
| # | Company | Location | Employees | Revenue |
|---|---|---|---|---|
| 1 | Clayco Inc | Chicago | 3,800 | $7.6B |
| 2 | Tecta America Corp | Rosemont | 4,500 | $2.9B |
| 3 | Enppi | Cairo | 3,000 | $1.9B |
| 4 | Power Construction | Chicago | 440 | $1.3B |
| 5 | FCL Builders | Itasca | 300 | $1.3B |
| 6 | Khatib & Alami | Beirut | 5,000 | $953M |
| 7 | Aldridge Electric Inc | Libertyville | 1,500 | $884M |
| 8 | SAC Wireless LLC | Chicago | 2,000 | $776M |
| 9 | PremiStar | Deerfield | 2,800 | $760M |
| 10 | Anning-Johnson Co | Melrose Park | 1,200 | $694M |
Construction in Illinois companies by size and revenue
| Employees | Companies | Share |
|---|---|---|
| 1-50 | 5,462 | 90.5% |
| 51-200 | 425 | 7.0% |
| 201-1000 | 117 | 1.9% |
| 1001-5000 | 24 | 0.4% |
| 5001+ | 6 | 0.1% |
| Revenue | Companies | Share |
|---|---|---|
| Under $10M | 5,378 | 90.5% |
| $10M-$50M | 418 | 7.0% |
| $50M-$250M | 108 | 1.8% |
| $250M-$1B | 31 | 0.5% |
| $1B+ | 7 | 0.1% |
Share is of companies with a known value — 6,034 with headcount and 5,942 with revenue on file, as of Jul 17, 2026.
Frequently asked questions
How many Construction in Illinois are there?
There are 6,047 Construction in Illinois in the directory. Use the filters to narrow by employee count, revenue, or NAICS/SIC code.
How many large companies are in Construction in Illinois?
57 of the 6,047 companies in Construction in Illinois employ more than 500 people, and 7 report over $1 billion in annual revenue. See the size and revenue breakdown above for the full distribution.
What size are most Construction in Illinois companies?
Most are small and mid-sized businesses: the size and revenue tables above show the full spread, from under $10M up to $1B+, across the 5,942 companies with revenue on file.
What information is included for each company?
Every listing includes the company name, location, website, employee size, revenue range where available, and NAICS/SIC classification, with a link to the full profile.
Where does this directory come from?
Listings are compiled and maintained by Factur, a sales and marketing firm for B2B manufacturers. Any company can request an update or removal from its profile page.