The city covered an area of only 636.18 square kilometers in 1949. By the year 1958, after Shanghai took over 10 counties from Jiangsu Province -- including Jiading, Baoshan, Shanghai, Songjiang, Jinshan, Chuansha, Nanhui, Fengxian, Qingpu and Chongming, the area under the city's jurisdiction expanded to 5,910 square kilometers. The city had a total area of 6,340.5 square kilometers at the end of 2004, 0.06% of China's total territory. Shanghai extends about 120 kilometers in north and south and nearly 100 kilometers in east and west. The city's 19 districts cover a total area of 5,299.29 square kilometers and its only county has an area of 1,041.21 square kilometers. The city has three islands -- Chongming, Changxing and Hengsha -- under its jurisdiction and Chongming Island is the third largest island in China, covering an area of 1,041.21 square kilometers.