Illinois Number of Private Business Establishments in the NAICS 334513 Industrial process variable instruments Industry By County in 2025 Q1 (QCEW)

Updated on April 2, 2026.

According to data from the US Bureau of Labor Statistics, in 2025 Q1, Illinois had 95 number of private business establishments in the NAICS 334513 Industrial process variable instruments Industry. Among all Illinois counties, Cook had the highest number of private business establishments (24), followed by DuPage (15), and Lake (10).

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.
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Illinois Number of Private Business Establishments in the NAICS 334513 Industrial process variable instruments Industry By County in 2025 Q1
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County Number of Business Establishments
Champaign 2
Cook 24
DuPage 15
Kane 7
Lake 10
LaSalle 1
McHenry 4
McLean 1
Marion 1
Pike 1
Sangamon 1
Vermilion 1
Will 2