Siyang County, known as Huaiyang and Taoyuan in ancient times, is located in the north of Jiangsu Province, bordering Huai'an City, the hometown of Premier Zhou Enlai in the east, Suqian City, the hometown of Xiang Yu in the west, and Hongze Lake, the fourth largest freshwater lake in the country in the south. The Beijing-Hangzhou Grand Canal, Xuyan Expressway, Xinchang Railway, and Suhuai-Huai Railway pass through the border, belonging to the Changsanjiao Economic Zone and Huaihai Economic Zone. The county covers an area of 1418 square kilometers, with a total population of 1.063 million, and governs 10 towns, 3 streets, and 1 provincial economic development zone. The county government is located in Zhongxing Street. According to the data of the seventh national population census, as of 0:00 on November 1, 2020, the permanent population of Siyang County was 829562.

The ancient and modern business card of Siyang is "the ancient capital of Surabaya, the capital of wine, and the green capital of the forest", with a history of 5000 years of civilization and 2200 years of city construction. Siyang County is the only "township of poplar trees" in China, and has successively won the titles of National Garden County and National Advanced Unit of Grain Production. The main tourist attractions in Siyang County include the Chinese Poplar Museum and Mazu Cultural Park; The main specialties include Siyang fat chicken, Baji small peanut, etc; The main historical culture includes Yundu peach carving, flower boat playing, etc; Famous figures mainly include Liu Shixun and Zhang Xiangwen. Xuyan High-speed Railway, National Highway 343, Provincial Highway 245 and Provincial Highway 325 pass through Siyang County, where the Central Canal and the Ancient Yellow River converge.

In 2021, the county's GDP will reach 59.631 billion yuan, up 9%. Among them, the added value of the primary industry was 7.436 billion yuan, up 3.8%; The added value of the secondary industry was 25.298 billion yuan, up 9.5%; The added value of the tertiary industry was 26.897 billion yuan, up 10%.