Tham Chalong (, ) is a tambon (sub-district) of Mueang Uttaradit District, in Uttaradit Province, Thailand. In 2015 it had a population of 2,800 people. History The sub-district was created effective 1 August 1984 by splitting off three administrative villages from Hat Ngio. Administration Central administration The tambon is divided into four administrative villages (muban). Local administration The area of the sub-district is covered by the sub-district administrative organization (SAO) Tham Chalong (องค์การบริหารส่วนตำบลถ้ำฉลอง). References External links Thaitambon.com on Tham Chalong Tambon of Uttaradit province Populated places in Uttaradit province