Jalhay is a municipality of Wallonia located in the province of Liège, Belgium. On 1 January 2006 Jalhay had a total population of 7,953. The total area is 107.75 km2 which gives a population density of 74 inhabitants per km2. The municipality consists of the following districts: Jalhay and Sart. The highest point of the municipality is the Baraque Michel in the High Fens, at 674 metres.