While Coraline is aimed at younger readers, his style is still similar through all his books. It's like young fiction writing for adults, in some sense, by which I mean he writes about situations in an adult fiction manner, but with a simple, direct style that hides magic, dark and charming, between the lines. I've always found it very readable and enjoyable.

Neverwhere, American Gods, Anansi Boys, and the Sandman graphic novels are for mature readers, but still carry that deceptively simple style. Stardust is for teenagers, while Graveyard Book and Coraline are for younger readers. I've found that all of his books can be enjoyed by any age group though. It's very flexible, and the age distinctions sort of blend together.