Do all Christians believe in Satan and/or Hell? Is it a denominational thing?

[The Mikado]

Yes, Hell is mentioned, whether the Hebrew "Sheol" ("the Pit") or the Greek "Gehenna" ("the Trash Heap") or the Greek "Tartarus" (What the ancient Greeks called Hell).  The depictions of it are not particularly fleshed out, though, outside of a few choice quotes that always get brought up ("Where their worm dieth not, and the fire is not quenched").

[The Mikado]

What do you even mean by the question?

Ummmm.... it's a relatively simple question.  Is it in the Bible?  If not, then why is mentioned?

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[The Mikado]

Worth pointing out that early Christianity (and some early Christianity-style sects today) believed that death would put you effectively on stasis to the end of days depicted in the Revelation of John, resting in your coffin.  The dead would rise and be subjected to the last judgement after the end of days, after which they would either have eternal life in the New Jerusalem or be hellbound forever.  Note that the difference for the sinners here is that they don't end up in hell until the coming of New Jerusalem.