Hui County or Huixian (simplified Chinese: 徽县; traditional Chinese: 徽縣; pinyin: Huī Xiàn) is a county under the administration of Longnan City, in the southeast of Gansu Province, China, bordering Shaanxi province to the south.

The postal code is 742300.

[2] The population was 209,113 in 1999.

[3] Hui County is divided into 13 towns and 2 townships:[4] -Towns are upgraded from Township.