Hukou County () is a county under the administration of Jiujiang City, in the north of Jiangxi Province, China, bordering Anhui province to the north. The total area is , and the population is 285,242 as of 2007.
Hukou County is divided to 5 towns and 7 townships.
Hukou is served by the TonglingâÂÂJiujiang Railway.