De acordo com Shift:
The original project Donald designs called for "a bunker that could house ten thousand people for a year". Later in the same book, there is concern when Silo 32 gets "close to the maximum": "Silo thirty-two had crept above nine thousand inhabitants".
Também se refere à população inicial:
"There were four thousand names in that first generation of silo two. Four thousand exactly. Roughly half were female." (For a specific silo, but let's assume that this was typical.)
Em poeira:
It seems that the population of Silo 18 is around five thousand: "'So, we're under five thousand residents for the first time in thirty years,' Marsha said".
Isso sugere que a população normal está em torno de quatro ou cinco mil , com um máximo de dez mil.