Polish Australians refers to Australian citizens or residents of full or partial Polish ancestry, or Polish citizens living in Australia. In 2006 52,254 Australian residents declared they were born in Poland. Cities with the largest Polish populations were Melbourne (16,439), Sydney (12,514), Adelaide (5,859) and Perth (5,142). The Polish-born Australian resident population predominantly were Australian citizens (90.3%), Christian (82.4%) and used Polish at home (70.0%). Around 78% arrived in Australia before 1990.