The following tri-state areas are also notable, but have no tripoint: Four Corners Four State Area Twin cities (geographical proximity), which includes tri-city Quad cities "Tri State Corners in the United States" (PDF).
Các khu vực ba bang sau đây cũng rất đáng chú ý, nhưng không có cột mốc điểm ba: Four Corners Four State Area Twin cities (geographical proximity), which includes tri-city ^ “Tri State Corners in the United States” (PDF).