Antigua is the larger of the two main islands and is located about 17°N latitude and 61°W longitude. It is about 21 miles long and 14 miles wide, with an area of about 108 square miles. Antigua is home to the country's capital city, St. John's, which is located on the northwestern coast of the island.
Barbuda is located about 25 miles north of Antigua and is about 11 miles long and 6 miles wide, with an area of about 62 square miles. Barbuda is a relatively flat island, with a large lagoon on the western side of the island.
The country is bordered by the Atlantic Ocean to the east, the Caribbean Sea to the west and south, and the island of Montserrat to the southwest.