Yanchang County (simplified Chinese: 延长县; traditional Chinese: 延長縣; pinyin: Yáncháng Xiàn) is a county under charge of Yan'an City, Shaanxi Province of China. It has a land area of 2,295 square kilometers, and a population of 140,000 in 2002.
Yanchang County consists of 6 towns and 6 townships.
- Towns: Qilicun, Heijiabao, Zhengzhuang, Zhangjiatan, Jiaokou, Anhe.
- Townships: Guoqi, Liujiahe, Angou, Nanhegou, Luozishan, Leichi.