List of states and union territories of India by sex ratio
Sex ratio is used to describe the ratio of females to males in a population. In India, the sex ratio has been estimated via a number of methods and data sets including the decennial censuses, the National Family Health Surveys (NFHS), the Civil Registration System, the Sample Registration System and the Health Management Information System. In 2014, the ratio of female births per 1000 male births varied from 887 to 918 using these estimates. According to the NFHS-4 (2015–16) sex ratio of the total population (females per 1,000 males) was 991 (with an urban ratio of 956 and a rural ratio of 1,009). In 2011–2013, it was revealed through a population census with the Sample Registration System (SRS) that the sex ratio of India was 909 females per 1000 of males. It has skewed downwards from then, recording 900 females in 2013–2015 and 896 in 2015–17 per 1000 of males. Furthermore, that survey conducted with the SRS also showed Chhattisgarh as the highest sex ratio at 961, while Haryana was recorded the lowest at 831. The male-skew in India's sex ratio has increased since the early 20th century. In 1901 there were 3.2 million fewer women than men in India,