« All Events This event has passed. Closed – Sioux County Treasurer’s Office May 3 « Closed – O’Brien County DMV Story Walk – Lyon County Conservation » The Sioux County Treasurer’s office will be closed, Wednesday, May 3rd for staff training. + Google Calendar+ Add to iCalendar Details Date: May 3 Event Category: Community Calendar - Have an event happening? Email us at newstips@kiwaradio.com!