The parish with the longest coastline, St Andrew has a population of approximately 23,000. There are many well established estates here, consequently it is the largest producer of Grenada's main export crops -cocoa, nutmegs and bananas, as well as spices, vegetables, coconuts, fruit and flowers.

Rainbow City is the name affectionately chosen by residents to call their lovely old town of Grenville. It is situated at the eastern end of the parish, nestled around a wide bay which, were it not for a series of coral reefs which make shipping manoeuvres a bit tricky, would be a much busier port especially for the shipping of produce from this highly agricultural parish. This often has to be trucked to St George's where the deep-water harbour is much more accessible to ocean going vessels.

The French, when in possession of the island, called this Grenville harbor "La Baye" and he name has continued to be used to designate the area in and around the town.

Grenville was originally built on a site just sought of its present location, in the Fedon Rebellion of 1795/96 it was the first town to be sacked by the rebels. After the rebellion, the town was rebuilt on its present site. Many interesting old buildings are in evidence here, for example the Anglican Church, Police Station, government revenue and post offices and the courthouse behind which the market is located.