Nauru, Niue, and Palau are all Pacific Island Republics. Nauru is a small island nation located in Micronesia, with a population of around 11, 000 people. Niue is an island country in the South Pacific Ocean, with a population of around 1, 600 people. Palau is an archipelago of over 500 islands in the western Pacific Ocean, with a population of around 21, 000 people. All three countries are self-governing republics in free association with other countries.