Port Vila, or simply Vila, is the capital of Vanuatu and its largest city. It is on the island of Efate. The population was 49,034 as of the 2020 cen…Port Vila, or simply Vila, is the capital of Vanuatu and its largest city. It is on the island of Efate. The population was 49,034 as of the 2020 census. In 2020, the population of Port Vila formed 16.3% of the country's population.