Umswai Langdo is a village in Donka tehsil in district of Karbi Anglong, Assam, India. As per the data provided by Census of India in 2011, total population of Umswai Langdo was 647 which includes 349 males and 298 females. Umswai Langdo covers 500 ha area. Pincode of Umswai Langdo is 782413.