Illinois Number of Private Business Establishments
in the NAICS 54171 Research and development in the physical, engineering, and life sciences Industry By County
in 2023 Q2 (QCEW)
Updated on June 3, 2025.
According to data from the US Bureau of Labor Statistics, in 2023 Q2, Illinois had 1,383 number of private business establishments in the NAICS 54171 Research and development in the physical, engineering, and life sciences Industry. Among all Illinois counties, Cook had the highest number of private business establishments (326), followed by DuPage (76), and Lake (70).
The chart and table shows the number of business establishments for each county.
You can see similar information for other states, and for the United States.
You can see similar information for other industries.
Related Topics: Illinois BLS Topic List.
Data Source: US Bureau of Labor Statistics (QCEW).
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Illinois Number of Private Business Establishments
in the NAICS 54171 Research and development in the physical, engineering, and life sciences Industry By County
in 2023 Q2
Illinois Number of Private Business Establishments
in the NAICS 54171 Research and development in the physical, engineering, and life sciences Industry By County
in 2023 Q2
Items per page:
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| County | Number of Business Establishments |
|---|---|
| Bureau | 1 |
| Champaign | 42 |
| Clinton | 1 |
| Coles | 1 |
| Cook | 326 |
| DeKalb | 2 |
| DuPage | 76 |
| Effingham | 3 |
| Hancock | 1 |
| Jackson | 1 |
| Jersey | 1 |
| Kane | 14 |
| Kankakee | 1 |
| Kendall | 4 |
| Lake | 70 |
| LaSalle | 2 |
| Logan | 1 |
| McDonough | 1 |
| McHenry | 6 |
| McLean | 3 |
| Macon | 2 |
| Madison | 8 |
| Marion | 1 |
| Monroe | 2 |
| Ogle | 2 |
| Peoria | 11 |
| Piatt | 2 |
| Putnam | 1 |
| Randolph | 1 |
| Rock Island | 7 |
| St. Clair | 8 |
| Saline | 1 |
| Sangamon | 5 |
| Tazewell | 1 |
| Vermilion | 1 |
| Warren | 1 |
| Will | 19 |
| Winnebago | 6 |