Udayapur District is one of 14 districts of Province No. 1 of eastern Nepal. The district, with Triyuga as its district headquarters, covers an area of 2,063 km2 (797 sq mi) and in 2001 had a population of 287,689, in 2011 of 317,532.
Detail of the Formation of Udayapur with old and new wards
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