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What is the area of Jiaohe River?

Jiaohe city covers an area of 6,429.3 square kilometers, including 3,725.56 square kilometers of hills, 7,465,438 hectares of cultivated land and 2,426 square kilometers of river basins. The city governs 6 townships, 9 towns and 4 streets 1 provincial economic development zones. The total population is about 470,000, of which 299,000 are agricultural. 18 ethnic minorities, about 40,000 people, including the DPRK, Manchu and Hui.