From un- + peopled.

unpeopled (not comparable)

1. Not inhabited by people.
   • 1831, L[etitia] E[lizabeth] L[andon], chapter VII, in Romance and Reality. […], volume II, London: Henry Colburn and Richard Bentley, […], →OCLC ↗, page 105 ↗:

     Still, one mansion, which the time ought to have unpeopled, was evidently inhabited; and in one of its rooms—small, but luxurious enough for a sultana in the Arabian Nights, or a young gentleman of the present day—were seated two persons in earnest conversation.

   • 1913, Arthur Conan Doyle, “(please specify the page)”, in The Poison Belt […], London; New York, N.Y.: Hodder and Stoughton, →OCLC ↗:

     I look out at the sunrise--that fateful sunrise which will shine upon an unpeopled world.

• peopleless
• uninhabited
• unpopulated