climatic zone - any of the geographical zones loosely divided according to prevailing climate and latitude

geographic area, geographic region, geographical area, geographical region - a demarcated area of the Earth

time zone - any of the 24 regions of the globe (loosely divided by longitude) throughout which the same standard time is used

transit zone - a six million square mile area that includes the Caribbean and the Gulf of Mexico and the eastern Pacific Ocean; includes the principal routes used by drug smugglers