 Cornelscourt has an area of 44.95 hectares.It stretches west to Kerrymount Avenue, south to the Old Bray Road, and east across the N11 to include all of Monaloe (directly behind Clonkeen College).Cornelscourt is in the Electoral Division of Stillorgan, in the Civil Parish of Kill, in the Barony of Rathdown, in the County of Dublin.