Haverfordwest is the county town of Pembrokeshire, in south-west Wales.
Haverfordwest serves as the market town for most of Pembrokeshire. It forms an important road network hub between other towns in Pembrokeshire such as Milford Haven, Pembroke Dock, Fishguard and St David's, as a result of its position at the tidal limit of the Western Cleddau river. The majority of the town, comprising the old parishes of St Mary, St Martin and St Thomas, lies on the right (west) bank of the river. On the left bank are the suburbs of Prendergast and Cartlett. At this point, a pair of sandstone ridges extending east-west and separated by a deep, narrow valley, are cut through by the western Cleddau. This leaves two high spurs on the west side of the river. On the northern spur, the castle and its surrounding settlement form the core of St Martin's parish. On the southern spur, the High Street ascends steeply from the river, and forms the core of St Mary's parish. From the foot of each spur, ancient bridges cross the river to Prendergast: St Martin's Bridge ("the Old Bridge") and St Mary's Bridge ("the New Bridge", built in 1835). St Thomas's parish occupies the south side of the southern spur. From these core areas, the town has spread, mainly along the ridges. In addition to the four ancient parish churches, the remains of an Augustinian priory are visible at the southern edge of the town.