Bluebulb Projects' The Measure of Things presents:
2,600 is about three times the number of Population of Vatican City.
In other words, it's 3.09 times the count of Population of Vatican City, and the count of Population of Vatican City is 0.3240 times that amount.
(a.k.a. Vatican City State, a.k.a. Stato della Città del Vaticano
, a.k.a. Status Civitatis Vaticanae
) (Rome, Italy) (2014 estimates; permanent residents only)