Mongar Dzongkhag is 460km east of Thimphu, the capital city of Bhutan. It lies between 27.25 ̊ latitude and 91.2˚ longitude. It has an area of about 1,940.26 sq.km with elevation ranging from 400-4000 meters above sea level. The lower and the southern parts are subtropical while northern and the higher regions have temperate climatic conditions. Summer can be hot and humid and winter cold.
The Dzongkhag is enclaved by Trashigang, Lhuentse, Pema Gatshel, Samdrup Jongkhar, Zhemgang and Bumthang Dzongkhags. The Kuri-Chhu, Sheri-Chhu and Drangme-Chhu are important rivers in the Dzongkhag.
The Dzongkhag is divided into 17 Gewogs, 88 Chiwogs, 638 Villages and a Drungkhag located at Weringla for administrative purposes and three Demkhongs viz Dramedtse-Ngatshang, Kengkhar- Weringla and Mongar Demkhongs for the purpose of elections.
Gongdue and Silambi under Weringla Dungkhag and Kengkhar, Jurmed and Saling Gewogs fall under Kengkhar Weringla Demkhong; Monggar, Chhaling, Drepoong, Tsakaling and Tsamang Gewogs fall under Monggar Demkhong and Balam, Chagsakhar, Dramedtse, Na-Rang, Ngatshang, Shermuhoong and Thang-Rong Gewogs under Dramedtse Ngatshang Demkhong respectively.
The total population is 36384 as of 2022 with 17498 Male and 18886 Female.
While maize and rice are grown abundantly, citrus fruits and vegetables, dairy and poultry products are increasingly becoming important sources of cash income.
The Dzongkhag has 1424.57 km of farm road, 44.8 km of forest road, 22 motorable bridges and 23 non-motorable bridges. The east west National Highway passes through the heart of the Dzongkhag.
The Dzongkhag has 41 Schools (7 ECRs, 24 PS, 4 MSS, 2CS and 2 HSS with total of about 8830 students and 611 teachers; 1 Regional Referral Hospital, 1 Hospital (10 bedded), 23 Primary Health Centre (PHC), 4 Sub Posts and 52 Outreach Clinics (ORC’s)s. There are also 17 Renewable Natural Resources Extension Center (RNR-EC) and one Agriculture Research and Development Center(ARDC) located at Wengkhar.