Puryong County is a kun, or county, in North Hamgyong province, North Korea. Most of the county is mountainous, being traversed by the Hamgyong Range and its outlying spurs. The highest point is Kosŏngsan (Chosŏn'gŭl: 고성산, Hancha: 姑城山), 1,754 meters above sea level. Many other high peaks are also found in the county. The chief stream is the Susŏgch'ŏn (Chosŏn'gŭl: 수성천. Hancha: 輸城川).90% of the county is forested. Rare mammals inhabit the area, including the marten, brown bear, and Amur leopard.