edit: this stuff is incorrect
Actual size is the size that the place takes up IRL, the map size is the size of Unturned’s version of the map, and then map percentage is the percent of the irl location that the ingame map takes up.
Just some fun information I calculated because I’m totally not procrastinating

Russia
** Actual size: 10,624,889,000 m^2
** Map size: 1,000,000 m^2
** Map percentage: 0.0094% 
PEI
** Actual size: 3,516,417 m^2
** Map size: 250,000 m^2
** Map percentage: 7.109% 
Greece
** Actual size: 81,994,467 m^2
** Map size: 1,000,000 m^2
** Map percentage: 1.220% 
Yukon
** Actual size: 299,775,726 m^2
** Map size: 250,000 m^2
** Map percentage: 0.0833% 
Cyprus
** Actual size: 5,748,577 m^2
** Map size: 250,000 m^2
** Map percentage: 4.348% 
Washington
** Actual size: 114,846,000 m^2
** Map size: 250,000 m^2
** Map percentage: 0.218%