Q. What is the population density rank of Uttar Pradesh among all Indian states as per Census 2011?
Answer: 4th
Notes: According to Census 2011, Uttar Pradesh ranks 4th in population density among Indian states, with 829 persons per sq. km. Only Bihar, West Bengal and Kerala have higher densities. The state's density is more than double India's national average of 382 persons per sq. km. Among states, Bihar is the most densely populated, followed by West Bengal, Kerala, and then Uttar Pradesh.