Vatican City - 0.2 square miles - The world's smallest state, the Vatican has a population of 770, none of whom are permanent residents. The tiny country which surrounds St. Peter's Basilica is the spiritual center for the world's Roman Catholics (over 1 billion strong). Also known as the Holy See, Vatican City is surrounded by Rome, Italy.
Monaco - 0.7 square miles - The tiny state of Monaco lies along the French Riviera on the French Mediterranean coast near Nice. An impressive 32,000 people live in this state known for its Monte Carlo casinos and Princess Grace. It has been independent off-and-on since the 13th century.
Nauru - 8.5 square miles - The 13,000 residents of the Pacific island Nauru rely on diminishing phosphate deposits. The state became independent in 1968 and was formerly known as Pleasant Island.
Tuvalu - 9 square miles - Tuvalu is composed of 9 coral atolls along a 360 mile chain in Polynesia. They gained independence in 1978. The former Ellice Islands are home to 12,000.
San Marino - 24 square miles - Located on Mt. Titano in north central Italy, San Marino has 29,000 residents. The country claims to be the oldest state in Europe, having been founded in the fourth century.
