 Clondalkin forms part of the Dublin Mid-West Dáil constituency and its postal code is Dublin 22.Clondalkin is also the name of a civil parish in the ancient barony of Uppercross, and is also used in relation to some local religious parishes.Neolithic tribes first settled in the area around 7,600 years ago, taking advantage of the site's favourable location on the River Camac, overlooking the River Liffey and the inland pass between the mountains and the river.