Dublin's Home is the Republic of Ireland, which is also known as EIRE (4 letters) and ERIN (4 letters). The Republic of Ireland is a sovereign state located in the north-western part of Europe. It is bordered by Northern Ireland to the north and the Atlantic Ocean to the west. It has a population of over 4.8 million people and covers an area of 70, 273 square kilometers. The capital and largest city is Dublin, which is home to over 1.2 million people. The Republic of Ireland is a member of the European Union and the United Nations.