Ninghai County is an administrative division located in the eastern part of Zhejiang Province, China. It falls under the jurisdiction of Ningbo and encompasses a total land area of 1,712.50 km² (661.20 sq mi). The region also includes a sea area of 213.35 km² (82.37 sq mi) and features a coastline spanning 173.86 km (108.03 mi).
The county has a population of approximately 682,000 residents. Its administrative structure consists of four sub-districts, 11 towns, and three townships.