Security Guard Services Across Baltimore and Maryland
On Site Police is based in Baltimore, and the city of Baltimore is our home. We provide licensed armed guard and unarmed guard security services, fire watch, mobile patrol, concierge security, event security, construction site security and private investigations throughout the region.
Counties we serve
We serve Baltimore City and every Maryland county west of the Chesapeake Bay, plus Cecil County.
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Baltimore City: Downtown, Inner Harbor, Fells Point, Canton, Federal Hill, Mount Vernon, Hampden
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Baltimore County: Towson, Owings Mills, Pikesville, Catonsville, Dundalk, Essex, White Marsh, Parkville
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Anne Arundel County: Annapolis, Glen Burnie, Linthicum / BWI, Odenton, Pasadena, Severna Park
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Howard County: Columbia, Ellicott City, Elkridge
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Harford County: Bel Air, Aberdeen, Edgewood, Havre de Grace
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Cecil County: Elkton, North East, Perryville, Rising Sun
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Carroll County: Westminster, Eldersburg
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Montgomery County: Rockville, Gaithersburg, Germantown, Silver Spring, Bethesda
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Prince George's County: Bowie, College Park, Upper Marlboro, Largo, Hyattsville
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Frederick County: Frederick, Urbana, Brunswick
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Washington County: Hagerstown
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Allegany County: Cumberland, Frostburg
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Garrett County: Oakland, McHenry / Deep Creek Lake
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Calvert County: Prince Frederick, Chesapeake Beach
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Charles County: Waldorf, La Plata
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St. Mary's County: Lexington Park, Leonardtown, California
Eastern Shore
Large projects are considered on request. Contact us at 410-591-9479 or inquiries@onsitepolice.com to discuss.
Services we provide across Maryland
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Property management security, construction site security and event security
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Retail loss prevention, cannabis dispensary security, executive protection and private investigations
Not sure if we cover your site? Call 410-591-9479. Eastern Shore projects are considered on request.