Louisiana Number of Private Business Establishments in the NAICS 541380 Testing laboratories 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, Louisiana had 267 number of private business establishments in the NAICS 541380 Testing laboratories Industry. Among all Louisiana counties, East Baton Rouge had the highest number of private business establishments (43), followed by Lafayette (31), and Jefferson (27).

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: Louisiana BLS Topic List.

Data Source: US Bureau of Labor Statistics (QCEW).

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Louisiana Number of Private Business Establishments in the NAICS 541380 Testing laboratories Industry By County in 2025 Q3

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County	Number of Business Establishments
Acadia	1
Ascension	11
Assumption	2
Bossier	5
Caddo	16
Calcasieu	14
Cameron	2
De Soto	2
East Baton Rouge	43
East Feliciana	1
Evangeline	1
Iberia	10
Iberville	1
Jefferson	27
Lafayette	31
Lafourche	1
Livingston	6
Morehouse	1
Orleans	6
Ouachita	6
Plaquemines	6
Rapides	1
St. Bernard	1
St. Charles	7
St. James	1
St. John the Baptist	6
St. Landry	2
St. Martin	6
St. Mary	7
St. Tammany	12
Tangipahoa	1
Terrebonne	16
Vermilion	1
Washington	1
Webster	5
West Baton Rouge	1