1. Vatican City

Size: 0.17 sq. mi. (0.44 km²)
Population: 783 (2005 census)
Location: Rome, Italy

2. Monaco

Size: 0.8 sq. mi. (1.96 km²)
Population: 35,657 (2006 estimate)
Location: French Riviera on the Mediterranean

3. Nauru

Size: 8 sq. mi (21 km²)
Population: 13,005 (2005 estimate)
Location: Western Pacific Ocean








 4. Tuvalu

Size: 9 sq. mi. (26 km²) 

Population:10,441 (2005 estimate)

Location:South Pacific

5. San Marino

Size: 24 sq. mi. (61 km²)
Population: 28,117 (2005 estimate)
Location: North-central Italy near the Adriatic coast.