Based in Lynbrook
Nassau County Security Guard Company
Blue Line Security Group is headquartered at 15 Atlantic Ave in Lynbrook, in the Town of Hempstead. From here we plan guard posts, mobile patrols, event staffing and fire guard coverage for businesses, residential communities and venues across Nassau County, from the South Shore barrier beaches to the estates and harbors of the North Shore.
One county, very different properties
Nassau County is made up of two cities, three towns, 64 incorporated villages and many unincorporated hamlets. A storefront on a busy turnpike, a gated HOA, a waterfront estate and a commuter-rail parking lot each need a different mix of officers, patrol rounds and reporting.
Every plan starts with a site review and written post orders. Officers are New York State-licensed and supervised, and schedules are confirmed for each address before coverage begins. Our town pages below describe what we can plan for in each community; they are not separate offices.
A-Z directory
Nassau County communities we serve
Grouped by the town or city each village and hamlet belongs to.
Town of Hempstead
Town of Hempstead security- Atlantic Beach
- Baldwin
- Barnum Island
- Bay Park
- Bellerose
- Bellmore
- Cedarhurst
- East Atlantic Beach
- East Meadow
- East Rockaway
- Elmont
- Floral Park
- Franklin Square
- Freeport
- Garden City
- Garden City Park
- Garden City South
- Gibson
- Green Acres
- Harbor Island
- Hempstead
- Hewlett
- Hewlett Bay Park
- Hewlett Harbor
- Hewlett Neck
- Inwood
- Island Park
- Lakeview
- Lawrence
- Levittown
- Lido Beach
- Lynbrook
- Malverne
- Meadowmere Park
- Merrick
- Mineola
- New Hyde Park
- North Bellmore
- North Lynbrook
- North Merrick
- North Valley Stream
- North Woodmere
- Oceanside
- Point Lookout
- Rockville Centre
- Roosevelt
- Salisbury
- Seaford
- South Floral Park
- South Hempstead
- South Valley Stream
- Stewart Manor
- Uniondale
- Valley Stream
- Wantagh
- West Hempstead
- Woodmere
- Woodsburgh
Town of North Hempstead
Town of North Hempstead security- Albertson
- Baxter Estates
- Carle Place
- East Hills
- East Williston
- Flower Hill
- Glenwood Landing
- Great Neck
- Great Neck Estates
- Great Neck Gardens
- Great Neck Plaza
- Greenvale
- Harbor Hills
- Herricks
- Kensington
- Kings Point
- Lake Success
- Manhasset
- Manhasset Hills
- Manorhaven
- Munsey Park
- New Cassel
- North Hills
- North New Hyde Park
- Old Westbury
- Plandome
- Plandome Heights
- Plandome Manor
- Port Washington
- Port Washington North
- Roslyn
- Roslyn Estates
- Roslyn Harbor
- Roslyn Heights
- Russell Gardens
- Saddle Rock
- Saddle Rock Estates
- Sands Point
- Searingtown
- Strathmore
- Thomaston
- University Gardens
- Westbury
- Williston Park
Town of Oyster Bay
Town of Oyster Bay security- Bayville
- Bethpage
- Brookville
- Centre Island
- Cove Neck
- East Norwich
- Farmingdale
- Glen Head
- Hicksville
- Jericho
- Lattingtown
- Laurel Hollow
- Locust Grove
- Locust Valley
- Massapequa
- Massapequa Park
- Matinecock
- Mill Neck
- Muttontown
- Old Bethpage
- Old Brookville
- Oyster Bay
- Oyster Bay Cove
- Plainedge
- Plainview
- Sea Cliff
- South Farmingdale
- Syosset
- Upper Brookville
- Woodbury
City of Glen Cove
City of Glen Cove securityCity of Long Beach
City of Long Beach securityNeed coverage in Suffolk County too?
See how we plan assignments east of the county line, or request a quote for any Long Island address.