The following map details areas where registered sex offenders, as defined by the Code of Iowa, are prohibited from residing in Dickinson County. PLEASE NOTE: If the registered sex offender lived in a restricted area prior to July 1, 2002, he or she may continue to reside there. Also, if a licensed day care center or school was established after a registered sex offender established residency, he or she may continue to reside there. If you have any questions regarding these maps or where a registered sex offender is living, contact the Dickinson County Sheriff's Office.