L
- Laceys Venture
- Ladiesburg
- Lake Arbor
- Lake Ford
- Lake Shore
- Lakesville
- Lambson
- Lander
- Land of Promise
- Landover
- Landover Hills
- Langford
- Langley Park
- Langmaid Landing
- Lanham
- Lansdowne
- Lantz
- Lapidum
- La Plaine Estates
- LaPlata
- Lappans
- Largo
- Laurel
- Laurelcrest
- Laurel Grove
- La Vale
- Lawsonia
- Layhill
- Laytonsville
- Leeds
- Leeland
- Lees Corner
- Le Gore
- Leitch
- Leitersburg
- Leonardtown
- Leslie
- Level
- Lewis Corner
- Lewisdale
- Lewis Landing
- Lewistown
- Lexington Park
- Liberty Grove
- Libertytown
- Libertytown
- Lilypons
- Lime Kiln
- Lincoln Heights
- Linebury
- Linkwood
- Linthicum
- Linthicum Heights
- Linwood
- Lisbon
- Little Cacapon
- Little Neck Farms
- Little Orleans
- Livingston Grove
- Llandaff
- Lloyd Landing
- Lloyds
- Loarville
- Lochearn
- Loch Lynn Heights
- Locust Grove
- Locust Hill Estates
- Locust Valley
- Lonaconing
- Londontowne
- Lone Holly
- Long Corner
- Longfield
- Long Green
- Long Meadow
- Longridge
- Longview Beach
- Longwoods
- Loretto
- Lot Lane
- Love Point
- Loveville
- Lower Marlboro
- Lowes Island
- Loys
- Luke
- Lusby
- Lutherville
- Lynch
- Lyons Creek Mobile Estates
- Lyonswood