Massachusetts Number of Private Business Establishments in the NAICS 541380 Testing laboratories 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, Massachusetts had 229 number of private business establishments in the NAICS 541380 Testing laboratories Industry. Among all Massachusetts counties, Middlesex had the highest number of private business establishments (62), followed by Norfolk (25), and Worcester (24).
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: Massachusetts BLS Topic List.
Data Source: US Bureau of Labor Statistics (QCEW).
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Massachusetts Number of Private Business Establishments
in the NAICS 541380 Testing laboratories Industry By County
in 2025 Q1
25
0 of 0
| County | Number of Business Establishments |
|---|---|
| Barnstable | 4 |
| Berkshire | 2 |
| Bristol | 6 |
| Essex | 19 |
| Franklin | 2 |
| Hampden | 16 |
| Hampshire | 3 |
| Middlesex | 62 |
| Norfolk | 25 |
| Plymouth | 8 |
| Suffolk | 16 |
| Worcester | 24 |
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