Udayapur District उदयपुर जिल्ला
District
Chure range landscape at Udayapur A scene of Mahabharat hills in Udayapur
Location of Udayapur District in Nepal
Limchung -bung Rautamai Udayapur -gadhi Triyuga Gaighat ✳️ Belaka Chaudandi -gadhi Katari Tapli Udayapur District
Country	Nepal
Province	Koshi Province
Headquarters	Triyuga
Area
• Total	2,063 km2 (797 sq mi)
Highest elevation	2,310 m (7,580 ft)
Lowest elevation	360 m (1,180 ft)
Population  (2021)[1]
• Total	340,721
• Households	75,937
Demographics
• Sex ratio	89.21 ♂ /53% ♀ (2011)
Main language(s)	Nepali, Magar, Tharu
Website	DCC Website CDO Website

Udayapur District (Nepali: उदयपुर जिल्लाListen (help·info), is one of 14 districts of Koshi Province 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,^[1] in 2021 of 342,773^[2]

1. ↑ "Udayapur District in Nepal Population". citypopulation.de. 7 October 2017. Retrieved 23 February 2018.
2. ↑ "राष्ट्रिय जनगणना २०७८ प्रारम्भिक नतिजा". www.cbs.gov.np. Central Bureau of Statistics, Nepal. January 2022. Archived from the original on 26 January 2022. Retrieved 26 January 2022.