Laishui County is a county located in central Hebei province, China. It sits within the basin of the Juma River and borders the Municipality of Beijing to its north. The county falls under the administration of the prefecture-level city of Baoding and contains the municipality's northernmost point.
As of 2020, Laishui County has a population of 315,753 residing across an area of 1,666 km² (643 sq mi). The region is served by major transportation routes, including China National Highway 112 and the G5 Beijing–Kunming Expressway.