It covers an area of 140.1 sq.km, and the overall population of this comarca was 83,305 at the 2011 Census;[2] the latest official estimate (as at the start of 2018) was 82,445.

This is the smallest comarca in terms of area in Galicia, and one of the five most densely populated.

The comarca comprises the following four municipalities: The region of O Morrazo is a peninsula, situated between the estuaries of Pontevedra and Vigo.

The current comarca of the Morrazo corresponds to only part of the traditional region.

The comarca formerly included the city of Pontevedra which formed part of O Morrazo within its vicariate.