Castle Rock, Maine is a fictional town used by Stephen King as the setting for a number of his novels, novellas, and short stories. Built similarly to the prototypical King town Jerusalem's Lot (featured in the novel 'Salem's Lot), it is a typical small New England town but with several dark secrets. It first appeared in the novel The Dead Zone. King eventually decided to stop using it as the setting of his works, and ended its use with the novel Needful Things. However, it has been mentioned in later works but it has not been used as the setting again. The town may be based on King's home town of Durham, Maine and Lisbon Falls, Maine, where he attended high school.
The name of King's town would eventually become famous enough that it was used for a few other products other than King's writings. A monthly newsletter about Stephen King called Castle Rock was published from January 1985 through December 1989. It was edited by King's brother in law, Christopher Spruce.