It is the second biggest city in Terai and the fifth biggest city in Nepal after Kathmandu , Pokhara , Lalitpur , and Biratnagar .
According to the 2011 Census , Birgunj had a population of 133,238 .
Birgunj is the second biggest city in Terai and the fifth biggest city in Nepal after Kathmandu , Pokhara , Lalitpur , and Biratnagar .
According to the 2011 Census , Birgunj had a population of 133,238 .