Sector 21 is an neighbourhood in Kalamboli, Navi Mumbai, Mumbai Metropolitan Region, Maharashtra, India. Kalamboli (0.0 Km), Greater Khanda (5.54 Km), Taloja (6.15 Km), Kamothe (7.06 Km), Hedutane (7.37 Km) are the nearby areas to Sector 21. Navi Mumbai, Pargaon Dungi, Adai are the nearby cities to Sector 21.