|Country||People's Republic of China|
|• Total||1,922.24 km2 (742.18 sq mi)|
|• Density||350/km2 (910/sq mi)|
|Time zone||UTC+8 (China Standard)|
Changfeng County (simplified Chinese: 长丰县; traditional Chinese: 長豐縣; pinyin: Chángfēng Xiàn) is a county of Anhui Province, East China, it is under the administration of the prefecture-level city of Hefei, the capital of Anhui. It is the northernmost county-level division of Hefei, the provincial capital. The county has a surface of 1,922.24 km2 (742.18 sq mi) and a population of 629,535 inhabitants. It contains 9 towns, 6 townships, and a development zone.
In 2014 Changfeng County offered 1,000 RMB in cash ($140) to each family who gave newborns the mothers' surname, in order improve the imbalanced sex ratio./
Changfeng County is divided to 9 towns 6 townships and 1 other.