Port-de-Paix is a commune and the capital of the Nord-Ouest department of Haiti on the Atlantic coast. It has a population of 462,000. Port-de-…Port-de-Paix is a commune and the capital of the Nord-Ouest department of Haiti on the Atlantic coast. It has a population of 462,000. Port-de-Paix used to be a large exporter of bananas and coffee. The city of Port-de-Paix located on a small coastal plain on the Atlantic coast of Haiti in the Tortuga Canal on the bank of Three-Rivers in an area marked by agricultural activities.