Xiji County (simplified Chinese: 西吉县; traditional Chinese: 西吉縣; pinyin: Xījí Xiàn) is a county under the administration of Guyuan city in Ningxia Hui Autonomous Region of the People's Republic of China. It has a total area of 3985 square kilometers, and a population of 480,800 people, including 263,000 Hui people.
Xiji County is an agricultural county, and its main product are wheat, pea, potatoes, buckwheat, vegetables. Common vegetables grown include cabbage, Chinese cabbage, celery, tomatoes, chili peppers, cucumbers, garlic, and melons. The county government is located in the town of Jiqiang, and the district's postal code is 756200.
Coordinates: 35°58′06″N 105°43′02″E / 35.96833°N 105.7173°E