Although there have been significant strides in urbanization, approximately 480 million people still live in urban slums globally. This is mainly due to population growth, with people moving to cities in search of better economic prospects, overwhelming urban areas. Among countries with the highest slum populations, the Democratic Republic of Congo stands out, with 35% of its population living in these underserved areas. India, the world's most populous nation, contributes significantly, with its urban slum population growing by 47.5% since 2000 and now comprising 17% of the total Indian population. Despite being an oil-rich nation, Nigeria's advancement in socio-economic development for its citizens has been slow, and its slum population continues to grow. Pakistan, Bangladesh, the Philippines, Ethiopia, and the Democratic Republic of Congo have also seen a similar rise in urban slums. However, Mexico and Indonesia have made concerted efforts, leading to a gradual reduction in urban slums.