Sector 21 is a locality within Belapur, Navi Mumbai, East Zone, Mumbai. Sector 21 has a pincode of 400614. Nearby localities of Sector 21 include Sector 21, Income Tax Colony, Sector 22, Sector 23, Sector 28, Agroli, Nilgiri Gardens, Sector 20, Belapur Village, Sector 19, Ekta Vihar, Sector 26, Sector 30, Sector 29, Sector 29, Shahbaz Village, Sector 10, Police Line, Sector 11, Sector 1, Sector 1A, Sector 9, Sector 24, Sector 15, Sector 14, Sector 6, Sector 14, Sector 9N, Diwale Village, Sector 2, Sector 3, Sector 13, Sector 4, Sector 3A, Sector 5, Sector 8A, Sector 8, Artist Village, CBD Belapur, Sector 8B, Sambhaji Nagar, Swami Vivekanand Nagar, Sector 12, Sector 7