Alcohol Treatment Centers Yankton County, SD Find local alcohol treatment centers in Yankton County, SD. Click on one of the areas listed below to locate alcohol detox facilities in South Dakota near you. Fairview Heights Gayville Green Island Jamesville Lakeport Lesterville Mayfield Midway Mission Hill Napa Junction Oak Hills Addition Pearsons Corner Sand Island Sego Island Utica Valleyview Vedin Corner Volin Yankton