County Carlow is the second smallest of Irish counties. It lies inland in Leinster Province Province and is bounded on the north by County Kildare, on the northeast by County Wicklow, on the southeast by County Wexford, on the southwest by County Kilkenny and on the northwest by County Laois. It covers an area of 346 square miles.
The principle rivers are the Barrow and the Slaney. Notable peaks include Mt. Leinster (2604 feet) and Mt. Blackstairs (2408 feet). The county town is Carlow. Others include Bagenalstown and Tullow.