Sunnyside Trailer Park is a trailer park located on the southside of Riverdale.
- "Chapter Seven: In a Lonely Place"
- "Chapter Eight: The Outsiders"
- "Chapter Ten: The Lost Weekend"
- "Chapter Eleven: To Riverdale and Back Again"
- "Chapter Twelve: Anatomy of a Murder" (mentioned)
- "Chapter Thirteen: The Sweet Hereafter"
- The Jones family keeps a spare key under a rusty lawn gnome just outside their trailer. They've done this for years seeing as Archie commented "it's the same as when we were kids" upon finding the key.