The district with the highest population density in India is North East Delhi, with a staggering density of over 37,000 people per square kilometer as per the 2011 Census. This urban district, located in the National Capital Territory (NCT) of Delhi, is densely packed with residential colonies, markets, and industrial areas. Due to rapid urban migration and limited geographical space, North East Delhi has become one of the most tightly packed districts in the country. Its population pressure has led to overburdened infrastructure and stretched public services.

North East Delhi is a vibrant mix of cultures, languages, and communities, with a large number of lower and middle-income households. It includes densely populated localities like Seelampur, Yamuna Vihar, and Shahdara, which face challenges such as traffic congestion, pollution, and lack of open spaces. Despite these issues, the district thrives with bustling commerce, educational institutions, and a strong informal economy. Efforts are being made to upgrade civic amenities and transport systems to better support its massive population density.