Block 21K is an neighbourhood in Regarpura, Karol Bagh, Delhi Central, New Delhi, India. Karol Bagh (0.0 Km), Paharganj (2.48 Km), Rajendra Place (2.52 Km), Rajinder Nagar (2.65 Km), New Rajinder Nagar (3.14 Km) are the nearby areas to Block 21K. New Delhi are the nearby cities to Block 21K.