Sector 21 is an sublocality in Ulwe, Navi Mumbai, Mumbai Metropolitan Region, India. Ulwe (0.0 Km), Karanjade (5.72 Km), Seawoods (7.8 Km), Nerul (8.42 Km), Belapur CBD (8.46 Km) are the nearby areas to Sector 21. Sonkhar, Bambavi, Pargaon Dungi, Navi Mumbai are the nearby cities to Sector 21.