Halsall is a village and civil parish in West Lancashire, England, located close to Ormskirk on the A5147 and Leeds and Liverpool Canal. The parish has a population of 1,921 and covers an area of 28.31 square kilometres. The church and much of the village stand on a rocky ridge, in marked contrast to the low-lying flat peat mossland between the ridge and the sand of Ainsdale and Birkdale.