Knottingley is a town in the City of Wakefield in West Yorkshire, England on the River Aire and the old A1 road before it was bypassed as the …Knottingley is a town in the City of Wakefield in West Yorkshire, England on the River Aire and the old A1 road before it was bypassed as the A1. Historically part of the West Riding of Yorkshire, it has a population of 13,503, increasing to 13,710 for the City of Wakefield ward at the 2011 Census. It makes up the majority of the Knottingley ward represented on Wakefield Council.