World Record Title: The world's least populous country: the Vatican
World Record Creator: Vatican
World Record Holder: Vatican
World Record Field: National Population
World Record Number: 20111200003
World Record Validity Period: Until the world record was broken.
World Record Source: World record database of Carrying the Flag
Awarding Certificate Date: December 12, 2011
World Record Details:

Vatican population  about 1,400, about 890 residents. Most citizens of the Vatican clergy, including bishops, priests, nuns, and the famous Swiss Guard (a dedicated volunteer service for the Pope Praetorian).