Adamstown is the capital and only settlement of the Pitcairn Islands, the only British Overseas Territory that is located in the southern Pacific Ocean. As of January 2020, Adamstown has a population of 47, which is the entire population of the Pitcairn Islands. All the other islands in the group are uninhabited. Adamstown is where most residents live, whil…Adamstown is the capital and only settlement of the Pitcairn Islands, the only British Overseas Territory that is located in the southern Pacific Ocean. As of January 2020, Adamstown has a population of 47, which is the entire population of the Pitcairn Islands. All the other islands in the group are uninhabited. Adamstown is where most residents live, while they grow food in other areas of the island.