Pétion-Ville in the context of Jean-Pierre Boyer

Port-au-Prince (/ˌpɔːrt oʊ ˈprɪns/ PORT oh PRINSS; French: [pɔʁ o pʁɛ̃s] ; Haitian Creole: Pòtoprens, [pɔtopɣɛ̃s]) is the capital and most populous city of Haiti. The city's population was estimated at 1,200,000 in 2022 with the metropolitan area estimated at a population of 2,618,894. The metropolitan area is defined by the IHSI as including the communes of Port-au-Prince, Delmas, Cité Soleil, Tabarre, Carrefour, and Pétion-Ville.

The city of Port-au-Prince is on the Gulf of Gonâve: the bay on which the city lies, which acts as a natural harbor, has sustained economic activity since the civilizations of the Taíno. It was first incorporated under French colonial rule in 1749. The city's layout is similar to that of an amphitheater; commercial districts are near the water, while residential neighborhoods are located on the hills above. Its population is difficult to ascertain due to the rapid growth of slums in the hillsides above the city; however, recent estimates place the metropolitan area's population at around 3.7 million, nearly a third of the country's national population. The city was catastrophically affected by a massive earthquake in 2010, with large numbers of structures damaged or destroyed. Haiti's government estimated the death toll to be 230,000. Gang violence is extensive, and kidnappings, massacres, and gang rapes are common occurrences, often with the complicity of police officers and politicians.

Delmas (French pronunciation: [dɛlma]; Haitian Creole: Dèlma) is a commune in the Port-au-Prince Arrondissement, in the Ouest department of Haiti. Delmas itself is an urban continuation of the capital city. Delmas is also the location of much of the area's commercial and industrial enterprise.

The city is structured around the central Route de Delmas road, with neighborhoods named after the smaller roads branching off from it, going from Delmas 2 up to Delmas 99, as the road goes up the mountain to Pétion-Ville.