Apparently quite a few.
I find it really amazing that in spite of a ton of evidence to the contrary, some people really believe that.
It's sad, really.
All you have to do is go up in a plane and you can see that the earth is a globe.
All you have to do is go to an eroding cliff by the sea or in a quarry and you can see layers of rock and stuff with fossils buried in it.
All you have to do is take a very basic course in biology, zoology, geology etc, and you could prove it for yourself.
Fortunately most Christians are more intelligent than you, and are certain that the earth is billions of years old, a globe, and that evolution is a proven fact which God kicked into action. The stories in the Bible were just fables to explain it all to very primitive, uneducated peasants in a way they could understand it.