Maryland Number of Private Business Establishments in the NAICS 561621 Security systems services, except locksmiths Industry By County in 2025 Q2 (QCEW)

Updated on April 2, 2026.

According to data from the US Bureau of Labor Statistics, in 2025 Q2, Maryland had 274 number of private business establishments in the NAICS 561621 Security systems services, except locksmiths Industry. Among all Maryland counties, Baltimore had the highest number of private business establishments (41), followed by Montgomery (32), and Prince George's (29).

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: Maryland BLS Topic List.

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

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Maryland Number of Private Business Establishments in the NAICS 561621 Security systems services, except locksmiths Industry By County in 2025 Q2

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County	Number of Business Establishments
Allegany	2
Anne Arundel	20
Baltimore	41
Calvert	4
Caroline	2
Carroll	9
Charles	3
Frederick	10
Harford	12
Howard	18
Kent	1
Montgomery	32
Prince George's	29
Queen Anne's	2
St. Mary's	1
Somerset	1
Talbot	3
Washington	8
Wicomico	4
Worcester	4
Baltimore city	10