Owls are found everywhere; cities, the country side, but I would imagine they are most commonly seen in the country side at night.
Owls are found everywhere except Antarctica, Greenland and certain remote islands.
Owls can be found on every single continent except Antarctica.
There are large number (30-35) of species of pygmy owls found around the world.
Owls are found in most parts of the world except Antarctica. A lot of owls live in old hawk or squirrel nests while cold weather owls make nests on the ground.
Generally
According to the NPS, two types of owls that are found here are the whiskered screech owls and elf owls.
barn owls and ospreys are found nearly world wide.
Burrowing Owls tend to migrate so they can be found in a variety of areas in the world. Often times they can be found in New Mexico, Central America, and Puerto Rico.
Owls can be found in both hot and cold deserts. About the only desert in the world without owls is the Antarctic Desert.
No, the biggest owls in the world are The Eurasian Eagle Owls.
Barred owls are found in temperate zones with wooded areas and lots of potential prey.
Burrowing owls' nest can be found exactly where their name suggests - in burrows.