area (sq. miles) | county count | state count | span (miles) | span center | span end 1 | span end 2 |
1 | 1870 | 5 | 1 | 3 | 1 | 2 | 67 | Judith Basin-MT (47.03, 110.25) | Judith Basin-MT (47.36, 110.77) | Judith Basin-MT (46.69, 109.75) |
2 | 1840 | 5 | 1 | 3 | 1 | 3 | 64 | Cimarron-OK (36.75, 102.52) | Cimarron-OK (37.00, 103.00) | Cimarron-OK (36.50, 102.03) |
3 | 1744 | 1 | 2 | 1 | 2 | 1 | 84 | Somerset-PA (39.73, 79.08) | Somerset-PA (40.24, 78.66) | Garrett-MD (39.21, 79.49) |
4 | 1150 | 5 | 1 | 3 | 1 | 5 | 55 | Walton-FL (30.63, 86.19) | Walton-FL (30.27, 86.00) | Walton-FL (30.99, 86.39) |
5 | 1138 | 1 | 2 | 1 | 2 | 6 | 53 | Sevier-TN (35.66, 83.59) | Sevier-TN (36.04, 83.66) | Swain-NC (35.28, 83.68) |
6 | 953 | 5 | 1 | 3 | 1 | 8 | 44 | Kimball-NE (41.20, 103.72) | Kimball-NE (41.00, 104.05) | Kimball-NE (41.39, 103.38) |
7 | 898 | 1 | 2 | 3 | 1 | 4 | 61 | Grayson-VA (36.75, 81.34) | Grayson-VA (36.56, 80.84) | Smyth-VA (36.93, 81.84) |
8 | 731 | 5 | 1 | 3 | 1 | 7 | 52 | Logan-AR (35.19, 93.71) | Logan-AR (35.06, 94.14) | Logan-AR (35.32, 93.28) |
9 | 698 | 5 | 1 | 3 | 1 | 15 | 38 | Pendleton-WV (38.68, 79.33) | Pendleton-WV (38.96, 79.35) | Pendleton-WV (38.41, 79.31) |
10 | 619 | 5 | 1 | 3 | 1 | 10 | 43 | Jo Daviess-IL (42.35, 90.29) | Jo Daviess-IL (42.49, 90.66) | Jo Daviess-IL (42.20, 89.92) |
11 | 561 | 5 | 1 | 3 | 1 | 9 | 44 | Cleburne-AL (33.69, 85.60) | Cleburne-AL (33.96, 85.40) | Cleburne-AL (33.47, 85.89) |
12 | 537 | 5 | 1 | 3 | 1 | 17 | 34 | Sussex-NJ (41.14, 74.68) | Sussex-NJ (41.09, 74.99) | Sussex-NJ (41.20, 74.37) |
13 | 512 | 5 | 1 | 3 | 1 | 16 | 35 | Pickens-SC (34.85, 82.72) | Pickens-SC (34.62, 82.85) | Pickens-SC (35.07, 82.57) |
14 | 501 | 1 | 2 | 3 | 1 | 11 | 42 | Union-GA (34.82, 83.85) | Union-GA (34.65, 84.16) | Towns-GA (34.99, 83.55) |
15 | 494 | 5 | 1 | 3 | 1 | 12 | 40 | New Castle-DE (39.56, 75.61) | New Castle-DE (39.83, 75.47) | New Castle-DE (39.30, 75.76) |
16 | 468 | 5 | 1 | 3 | 1 | 13 | 39 | Harlan-KY (36.82, 83.17) | Harlan-KY (36.98, 82.87) | Harlan-KY (36.66, 83.46) |
17 | 467 | 5 | 1 | 3 | 1 | 18 | 31 | Logan-OH (40.38, 83.77) | Logan-OH (40.23, 83.55) | Logan-OH (40.54, 83.99) |
18 | 444 | 5 | 1 | 3 | 1 | 14 | 39 | Tishomingo-MS (34.73, 88.26) | Tishomingo-MS (34.46, 88.16) | Tishomingo-MS (35.00, 88.36) |
19 | 405 | 5 | 1 | 3 | 1 | 20 | 28 | Wayne-IN (39.87, 85.01) | Wayne-IN (40.01, 84.81) | Wayne-IN (39.72, 85.19) |
20 | 399 | 5 | 1 | 3 | 1 | 19 | 29 | Osceola-IA (43.38, 95.62) | Osceola-IA (43.26, 95.39) | Osceola-IA (43.50, 95.86) |
21 | 313 | 5 | 1 | 3 | 1 | 21 | 28 | Yancey-NC (35.89, 82.33) | Yancey-NC (36.08, 82.40) | Yancey-NC (35.70, 82.26) |