Mosquitoes are distributed widely throughout the world. They are found at altitudes of over ~4700 m, as well as in mines ~1250 m below sea level.
Species range in latitudes from the tropics northwards into the Arctic regions and southwards to the ends of the continents. A wingless species has been reported from Antarctica. Some oceanic islands appear to have been free from mosquitoes before the advent of man and modern travel and some still are. Besides a worldwide distribution they are in general predominantly tropical insects.