Haixing County (simplified Chinese: 海兴县; traditional Chinese: 海興縣; pinyin: Hǎixīng Xiàn) is a county of southeastern Hebei province, China, bordering Shandong to the southeast. It is administered by Cangzhou City, and, as of 2004, had a population of 220,000 residing in an area of 836 km² (323 sq mi).