There's more than one place called '''Union County''':

United States of America

  • Union County (Arkansas)
  • Union County (Florida)
  • Union County (Georgia)
  • Union County (Illinois)
  • Union County (Indiana)
  • Union County (Iowa)
  • Union County (Kentucky)
  • Union County (Mississippi)
  • Union County (New Jersey)
  • Union County (New Mexico)
  • Union County (North Carolina)
  • Union County (Ohio)
  • Union County (Oregon)
  • Union County (Pennsylvania)
  • Union County (South Carolina)
  • Union County (South Dakota)
  • Union County (Tennessee)