- Lohrville
- Lone Pine Mobile Home Court
- Lone Rock
- Lone Tree
- Long Grove
- Long Island
- Long Point
- Lorah
- Lore
- Lore Mobile Home Park
- Lorimor
- Loring
- Lost Canyon Mobile Home Park
- Lost Nation
- Lotts Creek
- Louisa
- Louise
- Lourdes
- Loveland
- Lovilia
- Lovington
- Low Moor
- Lowden
- Lowell
- Lu Verne
- Luana
- Lucas
- Ludlow
- Lundgren
- Lunsford