Greendale is a neighboring town to Riverdale, located on the opposite side of the Sweetwater River. It is where Jason and Cheryl Blossom crossed over to from Riverdale, when Jason faked his death in order for him to run away. Penny Peabody is also known to traffic drugs throughout Greendale, though she knows better than to be caught there after midnight. Sabrina Spellman resides in this town along with her friends and family members.
After the event of the witch trials of Salem in 1692, the witches in Greendale were terrified of an imminent witch hunt. Shortly after, mortals began arresting suspected witches. The Greendale Thirteen were among the witches who were arrested, tortured and later hanged. The rest of their coven left them to die in the hopes of appeasing the blood-lust of the mortals. Since then, the remaining witches of the Church of Night and their ancestors have been living in the town, hiding in plain sight.