This paper provides an analysis of the proportion of the urban population living in slums, which is captured by the SDG indicator 11.1.1. This paper employs the Classification and Regression Tree (CART) and Dissimilarity Index (D-Index) methodologies to identify demographic characteristics of households most susceptible to living in slums in urban areas and disparities in access to adequate housing. The analysis focuses on three countries in South and South-West Asia and South-East Asia: Cambodia, India, and the Philippines, utilizing the most recent Demographic and Health Survey (DHS) data for each country. The paper aims to provide insights for policymakers and guide strategies to address urban housing deficiencies in the region.