- Lohrville
- Long Grove
- Low Moor
- Luana
- Luxemburg
- Lytton
- Latty
- Little Cody Island
- Little Rag Island
- Little Turtle Island
- Long Island
- Lattnerville
- Lore
- Lore Mobile Home Park
- Lost Canyon Mobile Home Park
- Lakeview Mobile Home Court
- Lima
- Levey
- Loring
- Lovington
- Lacey
- Langdon
- Langworthy
- Lanyon
- Liberty Center
- Linby
- Little Cedar
- Lourdes
- Luton
- Lyman