area (sq. miles) | county count | state count | span (miles) | span center | span end 1 | span end 2 |
1 | 18671 | 5 | 1 | 2 | 1 | 1 | 214 | Coconino-AZ (35.63, 111.64) | Coconino-AZ (34.26, 110.76) | Coconino-AZ (37.00, 112.54) |
2 | 14199 | 1 | 2 | 2 | 1 | 2 | 176 | Fremont-WY (42.94, 109.03) | Fremont-WY (44.01, 110.05) | Fremont-WY (42.26, 107.52) |
3 | 4938 | 5 | 1 | 2 | 1 | 4 | 111 | Custer-ID (44.20, 114.32) | Custer-ID (43.80, 113.36) | Custer-ID (44.61, 115.28) |
4 | 3814 | 5 | 1 | 2 | 1 | 5 | 106 | Culberson-TX (31.33, 104.47) | Culberson-TX (30.66, 104.92) | Culberson-TX (32.00, 104.02) |
5 | 3373 | 1 | 2 | 2 | 1 | 6 | 94 | Larimer-CO (40.51, 105.57) | Boulder-CO (39.96, 105.05) | Larimer-CO (41.00, 106.19) |
6 | 3248 | 5 | 1 | 2 | 1 | 8 | 83 | Duchesne-UT (40.31, 110.41) | Duchesne-UT (40.81, 109.98) | Duchesne-UT (39.81, 110.86) |
7 | 2786 | 5 | 1 | 2 | 1 | 3 | 112 | Pennington-SD (44.12, 102.99) | Pennington-SD (44.51, 102.00) | Pennington-SD (43.85, 104.06) |
8 | 2415 | 1 | 2 | 2 | 1 | 10 | 76 | Clackamas-OR (45.38, 122.10) | Clackamas-OR (45.13, 122.79) | Hood River-OR (45.70, 121.44) |
9 | 2204 | 5 | 1 | 2 | 1 | 11 | 73 | Taos-NM (36.55, 105.61) | Taos-NM (36.02, 105.51) | Taos-NM (37.00, 106.01) |
10 | 2130 | 5 | 1 | 2 | 1 | 12 | 67 | El Paso-CO (38.83, 104.54) | El Paso-CO (38.52, 104.05) | El Paso-CO (39.13, 105.03) |
11 | 1913 | 5 | 1 | 2 | 1 | 7 | 85 | Cook-MN (47.79, 90.31) | Cook-MN (47.39, 91.03) | Cook-MN (47.98, 89.43) |
12 | 1840 | 5 | 1 | 2 | 1 | 13 | 64 | Cimarron-OK (36.75, 102.52) | Cimarron-OK (37.00, 103.00) | Cimarron-OK (36.50, 102.03) |
13 | 1806 | 5 | 1 | 2 | 1 | 9 | 77 | Pierce-WA (47.10, 122.12) | Pierce-WA (47.40, 122.80) | Pierce-WA (46.79, 121.44) |
14 | 1278 | 5 | 1 | 2 | 1 | 17 | 52 | Price-WI (45.68, 90.36) | Price-WI (45.38, 90.68) | Price-WI (45.98, 90.04) |
15 | 1218 | 5 | 1 | 2 | 1 | 14 | 59 | Slope-ND (46.45, 103.49) | Slope-ND (46.63, 102.93) | Slope-ND (46.28, 104.05) |
16 | 1138 | 1 | 2 | 1 | 2 | 15 | 53 | Sevier-TN (35.66, 83.59) | Sevier-TN (36.04, 83.66) | Swain-NC (35.28, 83.68) |
17 | 1048 | 5 | 1 | 2 | 1 | 18 | 51 | Baraga-MI (46.71, 88.36) | Baraga-MI (47.01, 88.04) | Baraga-MI (46.42, 88.68) |
18 | 953 | 5 | 1 | 2 | 1 | 19 | 44 | Kimball-NE (41.20, 103.72) | Kimball-NE (41.00, 104.05) | Kimball-NE (41.39, 103.38) |
19 | 915 | 5 | 1 | 2 | 1 | 20 | 43 | Wallace-KS (38.92, 101.76) | Wallace-KS (39.14, 101.48) | Wallace-KS (38.70, 102.05) |
20 | 822 | 5 | 1 | 2 | 1 | 22 | 41 | Bienville-LA (32.34, 93.09) | Bienville-LA (32.45, 92.78) | Bienville-LA (32.24, 93.43) |
21 | 731 | 5 | 1 | 2 | 1 | 16 | 52 | Logan-AR (35.19, 93.71) | Logan-AR (35.06, 94.14) | Logan-AR (35.32, 93.28) |
22 | 619 | 5 | 1 | 2 | 1 | 21 | 43 | Jo Daviess-IL (42.35, 90.29) | Jo Daviess-IL (42.49, 90.66) | Jo Daviess-IL (42.20, 89.92) |
23 | 383 | 5 | 1 | 2 | 1 | 23 | 32 | Lake-CO (39.22, 106.36) | Lake-CO (39.38, 106.14) | Lake-CO (39.06, 106.58) |