Census of India - DISTRIBUTION OF 10,000 PERSONS BY LANGUAGE In up hindi speakers 91.33% and urdu speakers 7.99%. Muslim are 18.50% of up population. So more muslim say hindi as mother tonguge than urdu in up in cencus report. Up has more hindi speaking muslim than urdu speaking muslim thats also official. In west bengal bengalies are 85.9%. In assam assamese speaker are 49.5% of state population. Many more interesting point you will find in that.