Vatican City Population: 825 Residents in the World's Smallest State

Vatican City's population hovers around 825 people (2023 estimate), making it the smallest sovereign state by both area (0.44 km²) and population. But the demographics are unlike any other country on Earth.

Who Lives There

Clergy & Religious (~70%)

• The Pope (Bishop of Rome)
• Cardinals (resident in Vatican or Rome)
• Diplomats of the Holy See (nuncios, officials)
• Priests, nuns, brothers serving in Curia, parishes, congregations

Pontifical Swiss Guard (~135)

World's smallest active army. Requirements: Swiss citizen, Catholic, male, 19–30, 174 cm+, completed Swiss military training. Guard the Pope and Apostolic Palace since 1506.

Lay Employees (~50–100)

Administrative, technical, maintenance, restoration, IT, communications, museum, library, archives, gardens, post office, pharmacy, supermarket, gas station staff. Most commute from Rome; a few live inside walls.

No Permanent Lay Families

Citizenship is functional (granted for duration of office/service), not birthright or hereditary. Children of residents don't inherit citizenship. When appointment ends, citizenship reverts.

Demographic Quirks

• Sex ratio: Heavily male (Swiss Guard + clergy)
• Nationality: Majority non-Italian (Italians work there but live in Rome)
• Age: Older skew (cardinals, senior clergy); Guard brings 20s–30s
• Daytime population: Swells to 3,000–5,000 with commuters, tourists, pilgrims

Comparison

Next smallest by population: Tuvalu (~11,000), Nauru (~12,000), Palau (~18,000). By area: Monaco (2.02 km²), Nauru (21 km²).

Vatican citizenship is unique in international law: ~600 holders globally (including diplomats abroad), but only ~250 reside within the walls at any time.