area (sq. miles) | county count | state count | span (miles) | span center | span end 1 | span end 2 |
1 | 26607 | 2 | 2 | 1 | 2 | 1 | 314 | Coconino-AZ (36.60, 110.77) | Coconino-AZ (34.42, 111.55) | San Juan-UT (38.50, 109.06) |
2 | 15682 | 1 | 14 | 3 | 1 | 2 | 288 | Gunnison-CO (38.64, 106.75) | La Plata-CO (37.00, 108.38) | Boulder-CO (40.26, 105.06) |
3 | 3814 | 4 | 1 | 3 | 1 | 4 | 106 | Culberson-TX (31.33, 104.47) | Culberson-TX (30.66, 104.92) | Culberson-TX (32.00, 104.02) |
4 | 2786 | 4 | 1 | 3 | 1 | 3 | 112 | Pennington-SD (44.12, 102.99) | Pennington-SD (44.51, 102.00) | Pennington-SD (43.85, 104.06) |
5 | 2204 | 4 | 1 | 3 | 1 | 6 | 73 | Taos-NM (36.55, 105.61) | Taos-NM (36.02, 105.51) | Taos-NM (37.00, 106.01) |
6 | 2130 | 4 | 1 | 3 | 1 | 7 | 67 | El Paso-CO (38.83, 104.54) | El Paso-CO (38.52, 104.05) | El Paso-CO (39.13, 105.03) |
7 | 1913 | 4 | 1 | 3 | 1 | 5 | 85 | Cook-MN (47.79, 90.31) | Cook-MN (47.39, 91.03) | Cook-MN (47.98, 89.43) |
8 | 1840 | 4 | 1 | 3 | 1 | 8 | 64 | Cimarron-OK (36.75, 102.52) | Cimarron-OK (37.00, 103.00) | Cimarron-OK (36.50, 102.03) |
9 | 1278 | 4 | 1 | 3 | 1 | 12 | 52 | Price-WI (45.68, 90.36) | Price-WI (45.38, 90.68) | Price-WI (45.98, 90.04) |
10 | 1218 | 4 | 1 | 3 | 1 | 9 | 59 | Slope-ND (46.45, 103.49) | Slope-ND (46.63, 102.93) | Slope-ND (46.28, 104.05) |
11 | 1150 | 4 | 1 | 3 | 1 | 10 | 55 | Walton-FL (30.63, 86.19) | Walton-FL (30.27, 86.00) | Walton-FL (30.99, 86.39) |
12 | 1138 | 2 | 2 | 1 | 2 | 11 | 53 | Sevier-TN (35.66, 83.59) | Sevier-TN (36.04, 83.66) | Swain-NC (35.28, 83.68) |
13 | 1048 | 4 | 1 | 3 | 1 | 13 | 51 | Baraga-MI (46.71, 88.36) | Baraga-MI (47.01, 88.04) | Baraga-MI (46.42, 88.68) |
14 | 953 | 4 | 1 | 3 | 1 | 15 | 44 | Kimball-NE (41.20, 103.72) | Kimball-NE (41.00, 104.05) | Kimball-NE (41.39, 103.38) |
15 | 915 | 4 | 1 | 3 | 1 | 17 | 43 | Wallace-KS (38.92, 101.76) | Wallace-KS (39.14, 101.48) | Wallace-KS (38.70, 102.05) |
16 | 561 | 4 | 1 | 3 | 1 | 16 | 44 | Cleburne-AL (33.69, 85.60) | Cleburne-AL (33.96, 85.40) | Cleburne-AL (33.47, 85.89) |
17 | 552 | 4 | 1 | 3 | 1 | 14 | 46 | Reynolds-MO (37.51, 90.85) | Iron-MO (37.74, 91.15) | Iron-MO (37.27, 90.55) |
18 | 468 | 4 | 1 | 3 | 1 | 18 | 39 | Harlan-KY (36.82, 83.17) | Harlan-KY (36.98, 82.87) | Harlan-KY (36.66, 83.46) |
19 | 405 | 4 | 1 | 3 | 1 | 21 | 28 | Wayne-IN (39.87, 85.01) | Wayne-IN (40.01, 84.81) | Wayne-IN (39.72, 85.19) |
20 | 399 | 4 | 1 | 3 | 1 | 20 | 29 | Osceola-IA (43.38, 95.62) | Osceola-IA (43.26, 95.39) | Osceola-IA (43.50, 95.86) |
21 | 157 | 4 | 1 | 3 | 1 | 19 | 32 | Denver-CO (39.76, 104.87) | Denver-CO (39.90, 104.63) | Denver-CO (39.62, 105.11) |