Yankton Savings And Loan Association

Yankton School District 63-3 Foundation

Yankton Science Club

Yankton Security Patrol, Inc

Yankton Sertoma Babe Ruth Baseball Association

Yankton Servco, Inc

Yankton Super Valu, Incorporated

Yankton Surgical Associates, P.C

Yankton Swim Team, Inc

Yankton Tennis Association, Inc

Yankton Title Company

Yankton Transit, Inc

Yankton Transportation, Inc

Yankton Triatholon, Inc

Yankton Urological Surgery Prof., L.L.C

Yankton Usbc Association

Yankton Variety Incorporated

Yankton Verve, Inc

Yankton Veterinary Clinic, Prof. L.L.C

Yankton Volunteer And Information Center, Inc