- Lap
- Loarville
- Locust Grove
- Lowndes
- Lucas Heights
- Lake Forest
- Lake of the Pines
- Lake Riviera
- Lake View
- Lake Village
- Lakeland
- Lakewood
- Landhaven
- Lands End
- Lark Hill
- Larkington
- Laurel Acres
- Lavall
- Lavall Woods
- Leeds
- Lehigh
- Lennox Park
- Lincoln Heights
- Lindamoor on the Severn
- Linstead-on-the-Severn
- Linthicum Hills
- Linthicum Oaks
- Lions Gate
- Lipins Corner
- Little Island