Love to stay up all night with the Final Survivor? These are for you.
Perhaps more action than horror, but Dread Nation is an alternate history in which the Civil War dead rise as zombies.
This is an old one and therefore hard to find, but it is somehow both firmly horror and hysterically funny.
This is one of Melissa's all-time favorite YA Horror novels. If you like Jordan Peele's movies with their mix of creepy atmosphere and social commentary, you're going to love anything by Tiffany D. Jackson.