area (sq. miles) | county count | state count | span (miles) | span center | span end 1 | span end 2 |
1 | 105330 | 1 | 33 | 1 | 3 | 1 | 621 | Esmeralda-NV (37.86, 117.92) | Sonoma-CA (38.77, 123.53) | Millard-UT (39.02, 112.01) |
2 | 6426 | 3 | 3 | 2 | 1 | 2 | 128 | Santa Fe-NM (35.05, 106.02) | Santa Fe-NM (36.00, 106.07) | Torrance-NM (34.26, 105.31) |
3 | 5973 | 4 | 2 | 2 | 1 | 3 | 124 | Colfax-NM (36.60, 105.01) | Colfax-NM (37.00, 104.01) | Taos-NM (36.30, 106.06) |
4 | 4483 | 8 | 1 | 2 | 1 | 6 | 103 | Imperial-CA (33.01, 115.34) | Imperial-CA (33.43, 114.63) | Imperial-CA (32.62, 116.11) |
5 | 3611 | 2 | 4 | 2 | 1 | 5 | 103 | Park-CO (39.31, 105.88) | Summit-CO (39.92, 106.43) | Park-CO (38.70, 105.33) |
6 | 2786 | 8 | 1 | 2 | 1 | 4 | 112 | Pennington-SD (44.12, 102.99) | Pennington-SD (44.51, 102.00) | Pennington-SD (43.85, 104.06) |
7 | 2130 | 8 | 1 | 2 | 1 | 8 | 67 | El Paso-CO (38.83, 104.54) | El Paso-CO (38.52, 104.05) | El Paso-CO (39.13, 105.03) |
8 | 2066 | 4 | 2 | 2 | 1 | 7 | 88 | Tillamook-OR (45.67, 123.82) | Clatsop-OR (46.27, 123.50) | Tillamook-OR (45.04, 124.00) |
9 | 1150 | 8 | 1 | 2 | 1 | 10 | 55 | Walton-FL (30.63, 86.19) | Walton-FL (30.27, 86.00) | Walton-FL (30.99, 86.39) |
10 | 1081 | 8 | 1 | 2 | 1 | 12 | 53 | Somerset-PA (39.99, 79.04) | Somerset-PA (39.74, 79.41) | Somerset-PA (40.24, 78.66) |
11 | 947 | 8 | 1 | 2 | 1 | 11 | 54 | Berkshire-MA (42.40, 73.26) | Berkshire-MA (42.05, 73.50) | Berkshire-MA (42.74, 73.02) |
12 | 898 | 4 | 2 | 2 | 1 | 9 | 61 | Grayson-VA (36.75, 81.34) | Grayson-VA (36.56, 80.84) | Smyth-VA (36.93, 81.84) |
13 | 822 | 8 | 1 | 2 | 1 | 16 | 41 | Bienville-LA (32.34, 93.09) | Bienville-LA (32.45, 92.78) | Bienville-LA (32.24, 93.43) |
14 | 731 | 8 | 1 | 2 | 1 | 13 | 52 | Logan-AR (35.19, 93.71) | Logan-AR (35.06, 94.14) | Logan-AR (35.32, 93.28) |
15 | 561 | 8 | 1 | 2 | 1 | 14 | 44 | Cleburne-AL (33.69, 85.60) | Cleburne-AL (33.96, 85.40) | Cleburne-AL (33.47, 85.89) |
16 | 512 | 8 | 1 | 2 | 1 | 19 | 35 | Pickens-SC (34.85, 82.72) | Pickens-SC (34.62, 82.85) | Pickens-SC (35.07, 82.57) |
17 | 501 | 4 | 2 | 2 | 1 | 15 | 42 | Union-GA (34.82, 83.85) | Union-GA (34.65, 84.16) | Towns-GA (34.99, 83.55) |
18 | 468 | 8 | 1 | 2 | 1 | 17 | 39 | Harlan-KY (36.82, 83.17) | Harlan-KY (36.98, 82.87) | Harlan-KY (36.66, 83.46) |
19 | 444 | 8 | 1 | 2 | 1 | 18 | 39 | Tishomingo-MS (34.73, 88.26) | Tishomingo-MS (34.46, 88.16) | Tishomingo-MS (35.00, 88.36) |