Port-au-Prince (Haitian Creole: Pòtoprens) is an arrondissement in the Ouest department of Haiti.

[2][1] Postal codes in the Port-au-Prince Arrondissement start with the number 61.

The arondissement consists of the following communes: On 12 January 2010, a magnitude 7.0 earthquake struck in the arrondissement, the largest in Haiti in two centuries.

[3] The city of Port-au-Prince suffered much damage, and estimates of upwards of 50,000 deaths, with many facilities destroyed.

[5] In Carrefour, half of the buildings were destroyed in the worst-affected areas.