Saint Patrick was a county in Trinidad and Tobago that occupied an area of . It occupied the southwestern peninsula of the island of Trinidad, bounded by the Columbus Channel to the south, the Gulf of Paria to the west, and Victoria to the north.
The Saint Patrick region in Trinidad and Tobago had a specific geographical extent. This area included the southwestern portion of the island of Trinidad, which was separated from the rest of the land by the Columbus Channel on the south, the Gulf of Paria on the west, and Victoria to the north.