Solukhumbu District is one of 14 districts of Koshi Province of eastern Nepal. As the name suggests, it consists of the sub-regions Solu an…Solukhumbu District is one of 14 districts of Koshi Province of eastern Nepal. As the name suggests, it consists of the sub-regions Solu and Khumbu. The closest post office to Solukhumbu with a postal code assigned to it is the Sindhuli D.P.O., which has the postal code 56000.