Kildare (or Chill Dara in Irish) is an inland county bordered by Carlow, Laois, Meath, Offaly, Dublin and Wicklow. tis a generally a flat, lowland region. The county's highest points are the foothills of the Wicklow Mountains bordering to the east. The highest point in Kildare is Cupidstown Hill on the border with Dublin, with the better known Hill of Allen in central Kildare.
The county has three major rivers running through it: the Barrow, the Liffey and the Boyne. The Grand Canal crosses the county from Lyons on the east to Rathangan and Monasterevin on the west. A southern branch joins the Barrow navigation at Athy. The Royal Canal stretches across the north of the county along the border with Meath.
The Bog of Allen is a large bog that extends across 958 km2 and into County Kildare, County Meath, County Offaly, County Laois, and County Westmeath. Kildare has 243 km2 of bog (almost 14% of Kildare's land area) mostly located in the south-west and north-west, a majority of this being Raised Bog.