High Quality Content by WIKIPEDIA articles! Kilcullen (Irish: Cill Chuilinn), formally Kilcullen Bridge, is a small town on the River Liffey in County Kildare, Ireland. Its population of 2,985 (2006 Census) makes it the 12th largest settlement in County Kildare and the fastest growing in the county, having doubled in population from 1,483 in the census of 2002. It is situated primarily in the Barony of Kilcullen (in the Civil Parish of Kilcullen), with part in the Barony of South Naas (Civil Parish of Carnalway), and subsidiary areas include Logstown, Harristown, Carnalway and Brannockstown, Gilltown, Nicholastown, and Castlemartin.