Massachusetts Number of Private Business Establishments in the NAICS 334513 Industrial process variable instruments Industry By County in 2025 Q3 (QCEW)

Updated on April 2, 2026.

According to data from the US Bureau of Labor Statistics, in 2025 Q3, Massachusetts had 85 number of private business establishments in the NAICS 334513 Industrial process variable instruments Industry. Among all Massachusetts counties, Middlesex had the highest number of private business establishments (38), followed by Essex (15), and Worcester (7).

The chart and table shows the number of business establishments for each county.

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Massachusetts Number of Private Business Establishments in the NAICS 334513 Industrial process variable instruments Industry By County in 2025 Q3
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County Number of Business Establishments
Berkshire 1
Bristol 5
Essex 15
Franklin 1
Hampshire 1
Middlesex 38
Norfolk 5
Plymouth 4
Suffolk 1
Worcester 7