area (sq. miles) | county count | state count | span (miles) | span center | span end 1 | span end 2 |
1 | 326291 | 1 | 81 | 1 | 3 | 1 | 974 | Nye-NV (37.95, 116.70) | Gila-AZ (33.47, 110.00) | Del Norte-CA (42.00, 124.21) |
2 | 3814 | 5 | 1 | 3 | 1 | 3 | 106 | Culberson-TX (31.33, 104.47) | Culberson-TX (30.66, 104.92) | Culberson-TX (32.00, 104.02) |
3 | 2786 | 5 | 1 | 3 | 1 | 2 | 112 | Pennington-SD (44.12, 102.99) | Pennington-SD (44.51, 102.00) | Pennington-SD (43.85, 104.06) |
4 | 2415 | 2 | 2 | 3 | 1 | 5 | 76 | Clackamas-OR (45.38, 122.10) | Clackamas-OR (45.13, 122.79) | Hood River-OR (45.70, 121.44) |
5 | 2204 | 5 | 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 | 5 | 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 | 1840 | 5 | 1 | 3 | 1 | 8 | 64 | Cimarron-OK (36.75, 102.52) | Cimarron-OK (37.00, 103.00) | Cimarron-OK (36.50, 102.03) |
8 | 1744 | 2 | 2 | 2 | 2 | 4 | 84 | Somerset-PA (39.73, 79.08) | Somerset-PA (40.24, 78.66) | Garrett-MD (39.21, 79.49) |
9 | 1218 | 5 | 1 | 3 | 1 | 9 | 59 | Slope-ND (46.45, 103.49) | Slope-ND (46.63, 102.93) | Slope-ND (46.28, 104.05) |
10 | 953 | 5 | 1 | 3 | 1 | 11 | 44 | Kimball-NE (41.20, 103.72) | Kimball-NE (41.00, 104.05) | Kimball-NE (41.39, 103.38) |
11 | 915 | 5 | 1 | 3 | 1 | 12 | 43 | Wallace-KS (38.92, 101.76) | Wallace-KS (39.14, 101.48) | Wallace-KS (38.70, 102.05) |
12 | 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) |
13 | 552 | 5 | 1 | 3 | 1 | 10 | 46 | Reynolds-MO (37.51, 90.85) | Iron-MO (37.74, 91.15) | Iron-MO (37.27, 90.55) |
14 | 537 | 5 | 1 | 3 | 1 | 16 | 34 | Sussex-NJ (41.14, 74.68) | Sussex-NJ (41.09, 74.99) | Sussex-NJ (41.20, 74.37) |
15 | 501 | 2 | 2 | 3 | 1 | 13 | 42 | Union-GA (34.82, 83.85) | Union-GA (34.65, 84.16) | Towns-GA (34.99, 83.55) |
16 | 494 | 5 | 1 | 3 | 1 | 14 | 40 | New Castle-DE (39.56, 75.61) | New Castle-DE (39.83, 75.47) | New Castle-DE (39.30, 75.76) |
17 | 383 | 5 | 1 | 3 | 1 | 17 | 32 | Lake-CO (39.22, 106.36) | Lake-CO (39.38, 106.14) | Lake-CO (39.06, 106.58) |
18 | 68 | 5 | 1 | 3 | 1 | 18 | 14 | City of Washington-DC (38.89, 77.04) | City of Washington-DC (38.79, 77.04) | City of Washington-DC (39.00, 77.04) |