Jalpachilaune (ward no. 16) is a populated place located in Triyuga municipality of Udayapur District in Province No. 1 of Nepal. At the time of 2011 Nepal census it had a population of 3,864 people living in 807 individual households. Previously, Jalpachilaune was a separate village development committee in Udayapur District of Sagarmatha Zone in Eastern Region of Nepal. At the time of the 1991 Nepal census it had a population of 2,775 people living in 495 individual households.