Sullivan County Property Tax Bills Are Due Soon. The Deadline To Pay Is February 28Th. Notices Were Mailed Or Emailed Out Last October. You Can Pay At Any Bank Of Tennessee Location, Mail It In, Pay By Phone, Pay In Person At The Trustees Office In Blountville, At A Kiosk In The Courthouse , Or Pay Online At Tennesseetrustee.Org. Mailed Payments Must Be Postmarked On Or Before The 28Th To Be Considered On-Time.