area (sq. miles) | county count | state count | span (miles) | span center | span end 1 | span end 2 |
1 | 28862 | 1 | 10 | 1 | 2 | 1 | 335 | Tooele-UT (40.02, 112.98) | White Pine-NV (39.16, 115.91) | Duchesne-UT (40.81, 109.98) |
2 | 26607 | 3 | 2 | 1 | 2 | 2 | 314 | Coconino-AZ (36.60, 110.77) | Coconino-AZ (34.42, 111.55) | San Juan-UT (38.50, 109.06) |
3 | 15068 | 3 | 2 | 3 | 1 | 3 | 224 | Inyo-CA (36.16, 117.60) | Tulare-CA (36.49, 119.57) | Inyo-CA (35.81, 115.65) |
4 | 10200 | 3 | 2 | 3 | 1 | 5 | 157 | Siskiyou-CA (41.21, 122.44) | Shasta-CA (40.45, 121.33) | Siskiyou-CA (41.99, 123.54) |
5 | 7675 | 3 | 2 | 3 | 1 | 4 | 215 | Lane-OR (43.93, 122.00) | Lane-OR (44.28, 124.12) | Deschutes-OR (43.61, 119.90) |
6 | 7177 | 3 | 2 | 3 | 1 | 7 | 148 | Custer-ID (44.02, 114.03) | Custer-ID (44.74, 115.14) | Butte-ID (43.28, 112.95) |
7 | 6297 | 3 | 2 | 3 | 1 | 6 | 154 | Mesa-CO (39.30, 108.06) | Garfield-CO (40.09, 107.04) | Mesa-CO (38.50, 109.06) |
8 | 5730 | 3 | 2 | 3 | 1 | 9 | 117 | Iron-UT (37.58, 113.27) | Iron-UT (38.15, 112.48) | Washington-UT (37.00, 114.05) |
9 | 4750 | 12 | 1 | 3 | 1 | 11 | 106 | Moffat-CO (40.62, 108.19) | Moffat-CO (41.00, 107.32) | Moffat-CO (40.22, 109.05) |
10 | 4312 | 12 | 1 | 3 | 1 | 12 | 102 | Yakima-WA (46.51, 120.69) | Yakima-WA (47.09, 121.38) | Yakima-WA (46.04, 119.87) |
11 | 4087 | 12 | 1 | 3 | 1 | 8 | 130 | Sublette-WY (42.45, 110.54) | Lincoln-WY (41.58, 110.05) | Lincoln-WY (43.32, 111.04) |
12 | 3814 | 12 | 1 | 3 | 1 | 10 | 106 | Culberson-TX (31.33, 104.47) | Culberson-TX (30.66, 104.92) | Culberson-TX (32.00, 104.02) |
13 | 3609 | 2 | 3 | 3 | 1 | 13 | 91 | Park-CO (39.00, 105.83) | Chaffee-CO (38.42, 106.25) | Park-CO (39.57, 105.40) |
14 | 2415 | 3 | 2 | 3 | 1 | 15 | 76 | Clackamas-OR (45.38, 122.10) | Clackamas-OR (45.13, 122.79) | Hood River-OR (45.70, 121.44) |
15 | 1919 | 12 | 1 | 3 | 1 | 16 | 75 | Sevier-UT (38.77, 111.91) | Sevier-UT (38.51, 112.52) | Sevier-UT (39.03, 111.30) |
16 | 1666 | 3 | 2 | 3 | 1 | 14 | 83 | San Juan-CO (37.88, 107.63) | Ouray-CO (38.33, 108.13) | Hinsdale-CO (37.42, 107.13) |
17 | 1239 | 12 | 1 | 3 | 1 | 17 | 58 | Santa Cruz-AZ (31.54, 110.89) | Santa Cruz-AZ (31.43, 111.37) | Santa Cruz-AZ (31.73, 110.45) |