India : District Boundaries, 1981 is a polygon theme representing district boundaries of India for 1981. Includes district socio-demographic Census attribute data such as total population, population by sex, and rural/urban populations. This layer is part of the India HistoricMap dataset showing decadal change in district boundaries of India since 1951. This data layer is sourced from secondary government sources, chiefly Survey of India, Census of India, Election Commission, etc. Scale 1:1,000,000.