Sector 21 is an sublocality in Belapur CBD, Navi Mumbai, Mumbai Metropolitan Region, Maharashtra, India. Belapur CBD (0.0 Km), Nerul (4.97 Km), Seawoods (6.42 Km), Juinagar (6.54 Km), Sanpada (8.08 Km) are the nearby areas to Sector 21. Sonkhar, Bambavi, Pargaon Dungi, Navi Mumbai are the nearby cities to Sector 21.