Kaihua County (simplified Chinese: 开化县; traditional Chinese: 開化縣; pinyin: Kāihuà Xiàn) is a county under the jurisdiction of Quzhou city in Zhejiang Province of the People's Republic of China.It is located in the westernmost portion of Zhejiang, and is the source of the Qiantang River.The district's total area is 2224 square kilometers, and its population is 340,000 people.