Delhi has experienced high levels of migration in the last decade, with 2.2 million migrants moving into the city compared to only 450,000 moving out. The majority of migrants came from neighboring states like Uttar Pradesh, Bihar, and Haryana, and were predominantly male. Migrants cited work and employment opportunities as the primary reasons for relocating to Delhi. While natural population growth has accounted for 50-60% of Delhi's population increase, the percentage of growth from migration has declined even as the actual number of migrants has continued to rise significantly.