Vatican City: The World's Smallest Independent City-State

At just 0.44 km² (0.17 sq mi) and ~800 residents, Vatican City holds the title of the smallest sovereign state by both area and population. An enclave within Rome, it serves as the spiritual and administrative center of the Roman Catholic Church.

Key Facts

• Status: Independent city-state (Lateran Treaty, 1929)
• Head of State: The Pope (absolute elective monarchy)
• Population: ~800 (clergy, Swiss Guard, officials)
• Language: Italian (official), Latin (Holy See)
• Currency: Euro (by agreement with EU)

What Makes It a "City"

Despite its size, Vatican City has all sovereign attributes: government, legal system, postal service, radio station, pharmacy, supermarket, and a railway station (mostly symbolic). The Vatican Museums, St. Peter's Basilica, and the Sistine Chapel draw ~6M visitors annually.

Not to Be Confused With

• Holy See: The universal government of the Catholic Church (diplomatic entity)
• Rome: The Italian capital surrounding Vatican City

Fun fact: The Vatican's ATM instructions are in Latin—the only ones in the world.