- Lakewood Estates
- Lancaster Hill
- Laurian
- Leming
- Line Ridge
- Llewelyn at Sunderland
- Locust Grove Beach
- Long Beach
- Lord Calvert Estates
- Lord Calvert Hills
- Lord Cecil Woods
- Lower Marlboro Meadow
- Lower Marlboro Towne
- Lowery Oaks
- Lowrys Resurvey
- Lyons Creek Hundred
- La Plaine Estates
- Lakeside Park South
- Laurel Chase Manor
- Leeds
- Leslie
- Little Elkton
- Lombard
- Lombard Acres
- Lum Estates
- Legion Heights
- Linchester
- Lor-J Estates
- Lyford Landing
- Lyn Woods