Sector 21A is an locality in Noida, Gautam Buddh Nagar District, Uttar Pradesh, India, 201301. Sector 25 (0.82 Km), Sector 12 (0.87 Km), Sector 20 (1.66 Km), Sector 26 (1.85 Km), Sector 55 (2.48 Km) are the nearby areas to Sector 21A. New Delhi, Desai Village, Noida, Bishanpura are the nearby cities to Sector 21A.