According to the Census of India 2011, Uttar Pradesh has the highest number of Hindu population.

The Census of India 2011 provides detailed demographic data, including religious affiliations. Analyzing the religious data from the census reveals that Uttar Pradesh had the largest number of individuals identifying as Hindu compared to any other state in India. While other states like Maharashtra and Madhya Pradesh have significant Hindu populations, Uttar Pradesh's sheer size and population density contribute to its higher overall Hindu population count. The census data is meticulously collected and analyzed, making it a reliable source for this information. It's important to note that population figures fluctuate, and future censuses may show different results, but based on the 2011 data, Uttar Pradesh holds this distinction. The detailed data is publicly available for further analysis and verification. The census methodology ensures accurate representation to the best of its ability, making it a primary source for demographic studies of India. The scale of the 2011 census is significant considering the geographical expanse and population diversity of India. This data forms the basis for government policies and resource allocation.