- Lakewood, DuPage
- Lakewood Estates
- Lakewood Falls
- Lakewood Ridge
- Lakewood Shores
- Lamb
- Lamone Village
- Lanark
- Lancaster
- Lancaster
- Landes
- Landwehr Estates
- Lane
- Lane Park
- Lanesville
- Langham
- Langham Island
- Langley
- Langleyville
- Lansing
- Lanton
- Larchland
- Larkdale
- Larkins Pointe
- Latham
- Latham Park
- Latona
- Laura
- Laurette
- Lawler