There are two "county" level regions in the South Korean maps that are actually neighborhood level and should not be included on a county level map. These two are listed below.
창원시 마산합포구 신포동1가 (Gyeongsang nam do)
창원시 마산합포구 신월동 (Gyeongsang nam do)
These are well below the county level and actually just small neighborhoods within the same city. I'm not sure how these were mislabeled, but they should be removed from the South Korean Maps.