- Top Cities in New Jersey: K-L
- Keansburg
- Kearny
- Kendall Park
- Kenilworth
- Keyport
- Lafayette
- Lake Hiawatha
- Lake Hopatcong
- Lakehurst
- Lakewood
- Lambertville
- Landing
- Lanoka Harbor
- Lavallette
- Lawrence Township
- Lebanon
- Leonardo
- Leonia
- Lincoln Park
- Lincroft
- Linden
- Linwood
- Little Falls
- Little Ferry
- Little Silver
- Livingston
- Lodi
- Long Branch
- Long Valley
- Lyndhurst