Covering an area of 1,196 km², Clarendon ranks as Jamaica's third largest parish. The parish is predominantly a wide plain, marked by several rivers, including the Rio Minho River, which runs the length of the parish. Toward the northern end of the parish lies the Mocho Mountain, (200 ft), and Bull Head Mountain range (2800 ft), which is considered to be the geographical centre of the island. The Vere plain is another significant geographical feature.
Portland Point, the southernmost point of Jamaica, is on a peninsula in Clarendon which also hosts Portland Point Lighthouse. On the same peninsula are Jackson Bay beach, the flood-prone community of Portland Cottage, and two different locations both called Rocky Point: a residential community on the western side of the peninsula, and a port used primarily for the export of alumina on the eastern side of the peninsula.
With a population at an estimated 215,515,[citation needed] Clarendon is one of the most populous parishes in the island. May Pen, the capital, has a population estimated at around 60,000