Ninghai County is a county under the administration of Ningbo, in the east of Zhejiang province, People's Republic of China. It covers a land area of 1,712.50 km2 (661.20 sq mi) and a sea area 213.35 km2 (82.37 sq mi) of and has a 173.86 km (108.03 mi) coastline. It has four sub-districts, 11 towns, three townships and a population of 682,000.