- Linden Circle
- Lindon
- Lindsey Circle Condominium
- Linford Acres
- Little Bonanza
- Little Cottonwood Creek Valley
- Little Cottonwood Creek Valley (historical)
- Little Cottonwood Valley
- Little Mountain
- Little Mountain
- Little Mountain Canyon Condominium
- Little Trieste
- Little Water
- Little Willow
- Little Willow
- Littleton
- LKC Development
- LKC Jordan View Estates
- Loa
- Lobo Subdivision
- Lofgreen
- Logan
- Lois
- Lone Tree Crossing
- Long Valley Junction
- Longview Acres
- Loredell
- Lornadale
- Lost Acres
- Low