The sex offenders are all either working or living at Wayside Cross Ministries.
Aurora's mayor said the order came after police realized the center was within 500 feet of a park, which is against the law.
Thomas Kokoraleis is not among the evicted. He was part of the "Ripper Crew," a satanic cult and crime group, who entered the center in April after serving half of his 70-year sentence for the 1982 murder of Elmhurst 21-year old Lorry Ann Borowski.
Wayside Cross released a statement on their website, saying in part, "Wayside Cross Ministries has been the only refuge for these men, and has been a beacon of light for over 90 years. Releasing these 20 men into the community without supervision and support is not in the best interest of these residents or our community."