Udayapur District

Udayapur District उदयपुर जिल्ला
District
Bokse in Triyuga Municipality, Mahabhaarat hills in background
Udayapur district in Province No. 1
Limchung -bung Rautamai Udayapur -gadhi Triyuga Gaighat ✳️ Belaka Chaudandi -gadhi Katari Tapli Political division of Udayapur
Coordinates: 26°55′N 86°40′E / 26.917°N 86.667°E / 26.917; 86.667
Country	Nepal
Province	Koshi Province
Established	During Rana regime
Admin HQ.	Gaighat (Triyuga)
Municipality	List Urban Triyuga Chaudandigadhi Belaka Katari Rural Tapli Limchungbung Rautamai Udayapurgadhi
Government
• Type	Coordination committee
• Body	DCC, Udayapur
• Head	Subash karki
• Deputy-Head	Indira karki
• Parliamentary constituencies	2 (UP1 & UP2)
• Provincial constituencies	4
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)
• Total	342,773
• Households	75,937
Demographics [1]
• Ethnic groups	Chhetri Rai Magar Tharu] people [Tamang
• Female ♀	53%
• Male ♂/100 female	89.21
Human Development Index [2]
• Income per capita (US dollars)	920 USD
• Poverty rate	29.74
• Literacy	69%
• Life Expectancy	69.29
Time zone	UTC+05:45 (NPT)
Postal Codes	56300, 56301, 56302, 56303, 56305, 56306... 56312
Telephone Code	035
Main Language(s)	Nepali, Magar, Tharu
Major highways	Sagarmatha
Website	ddcudayapur.gov.np

Udayapur District (Nepali: उदयपुर जिल्लाListen^ⓘ, is one of the 14 districts of Koshi Province in 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,^[3] in 2021 of 342,773^[4]

Rivers and hills form natural borders for Udayapur District. The Koshi River to the east separates it from Sunsari District and the Sun Kosi River to the north separates it from Bhojpur and Khotang Districts. The Tawa Khola separates it from Sindhuli District to the west and the Siwalik foothills to the south separate it from the outer Tarai of Siraha and Saptari. The Koshi Tappu Wildlife Reserve lies to the east in Udayapur, Sunsari and Saptari Districts.

According to the former administrative divisions of Nepal, Udayapur falls in Eastern Development Region in Sagarmatha Zone.