Population density refers to how people spread out within a geographical area. India has highly uneven pattern of population distribution. In this paper States and UTs wise detailed analysis of population density was analyzed. The study uses secondary data available in the Census 2011. For data analysis tabulates it accordingly and represented throw graphs. Bihar has a significantly high density of 1,106 people sq km, making it the most densely populated large state. West Bengal (1,028) and Kerala (860) also have high population densities. These are generally states with fertile plains, good infrastructure and historical population growth. States in the North-Eastern Region (e.g., Arunachal Pradesh, Mizoram, Sikkim, Nagaland, Meghalaya) and mountainous or desert States (e.g., Jammu & Kashmir, Himachal Pradesh, Uttarakhand, Rajasthan) typically have much lower population densities due to challenging terrain, forest cover or arid conditions. Arunachal Pradesh has the lowest density at just 17 people per sq km, followed by Andaman & Nicobar Island at 46.