area (sq. miles) | county count | state count | span (miles) | span center | span end 1 | span end 2 | FGR (miles) | center county and point | county 1 and point | county 2 and point | county 3 and point |
1 | 10200 | 6 | 2 | 4 | 1 | 4 | 157 | Siskiyou-CA (41.21, 122.44) | Shasta-CA (40.45, 121.33) | Siskiyou-CA (41.99, 123.54) | 31 | Shasta-CA (40.89, 121.93) | Tehama-CA (40.44, 121.85) | Lassen-CA (40.91, 121.33) | Trinity-CA (41.10, 122.46) |
2 | 9622 | 1 | 20 | 1 | 2 | 2 | 200 | Nelson-VA (37.75, 78.70) | Pittsylvania-VA (36.54, 79.71) | Fauquier-VA (38.94, 77.66) | 17 | Nelson-VA (37.82, 79.03) | Buckingham-VA (37.63, 78.82) | Waynesboro-VA (38.05, 78.91) | Buena Vista-VA (37.76, 79.33) |
3 | 6970 | 4 | 3 | 4 | 1 | 1 | 202 | Washoe-NV (40.55, 119.67) | Washoe-NV (42.00, 119.99) | Carson City-NV (39.09, 119.55) | 21 | Washoe-NV (39.78, 119.61) | Pershing-NV (40.00, 119.34) | Lassen-CA (39.79, 120.00) | Lyon-NV (39.62, 119.28) |
4 | 5922 | 2 | 7 | 4 | 1 | 3 | 196 | Sacramento-CA (38.35, 121.54) | El Dorado-CA (38.92, 119.89) | San Francisco-CA (37.75, 123.17) | 18 | Contra Costa-CA (38.03, 121.91) | Alameda-CA (37.80, 122.05) | San Joaquin-CA (38.04, 121.58) | Napa-CA (38.15, 122.20) |
5 | 3132 | 10 | 1 | 4 | 1 | 5 | 129 | Mineral-NV (38.09, 118.70) | Mono-CA (37.46, 117.83) | Mono-CA (38.71, 119.59) | 18 | Mono-CA (37.78, 118.76) | Madera-CA (37.68, 119.06) | Fresno-CA (37.55, 118.92) | Mineral-NV (37.97, 118.53) |
6 | 2786 | 10 | 1 | 4 | 1 | 6 | 112 | Pennington-SD (44.12, 102.99) | Pennington-SD (44.51, 102.00) | Pennington-SD (43.85, 104.06) | 16 | Pennington-SD (43.92, 102.33) | Meade-SD (44.14, 102.39) | Shannon-SD (43.69, 102.34) | Jackson-SD (43.92, 102.02) |
7 | 2130 | 10 | 1 | 4 | 1 | 8 | 67 | El Paso-CO (38.83, 104.54) | El Paso-CO (38.52, 104.05) | El Paso-CO (39.13, 105.03) | 21 | El Paso-CO (38.82, 104.55) | Elbert-CO (39.13, 104.55) | Teller-CO (38.80, 104.94) | Pueblo-CO (38.52, 104.55) |
8 | 1840 | 10 | 1 | 4 | 1 | 10 | 64 | Cimarron-OK (36.75, 102.52) | Cimarron-OK (37.00, 103.00) | Cimarron-OK (36.50, 102.03) | 17 | Cimarron-OK (36.75, 102.70) | Union-NM (36.75, 103.00) | Dallam-TX (36.50, 102.69) | Baca-CO (37.00, 102.69) |
9 | 1621 | 10 | 1 | 4 | 1 | 9 | 65 | Jackson-CO (40.68, 106.41) | Jackson-CO (40.35, 105.96) | Jackson-CO (41.00, 106.86) | 18 | Jackson-CO (40.64, 106.33) | Grand-CO (40.41, 106.49) | Larimer-CO (40.76, 106.02) | Routt-CO (40.70, 106.67) |
10 | 1374 | 4 | 3 | 4 | 1 | 7 | 79 | Adams-CO (39.85, 104.42) | Denver-CO (39.63, 105.11) | Adams-CO (40.00, 103.71) | 9 | Adams-CO (39.87, 104.41) | Weld-CO (40.00, 104.41) | Arapahoe-CO (39.74, 104.41) | Arapahoe-CO (39.74, 104.41) |
11 | 1138 | 6 | 2 | 1 | 2 | 14 | 53 | Sevier-TN (35.66, 83.59) | Sevier-TN (36.04, 83.66) | Swain-NC (35.28, 83.68) | 12 | Sevier-TN (35.62, 83.45) | Cocke-TN (35.71, 83.28) | Blount-TN (35.62, 83.66) | Jackson-NC (35.47, 83.35) |
12 | 1081 | 10 | 1 | 4 | 1 | 13 | 53 | Somerset-PA (39.99, 79.04) | Somerset-PA (39.74, 79.41) | Somerset-PA (40.24, 78.66) | 15 | Somerset-PA (39.93, 79.03) | Garrett-MD (39.72, 79.03) | Bedford-PA (39.94, 78.76) | Westmoreland-PA (40.11, 79.18) |
13 | 1017 | 6 | 2 | 4 | 1 | 12 | 61 | Grand-CO (39.74, 105.92) | Summit-CO (39.92, 106.44) | Clear Creek-CO (39.57, 105.40) | 9 | Clear Creek-CO (39.69, 105.67) | Gilpin-CO (39.77, 105.54) | Grand-CO (39.80, 105.74) | Park-CO (39.57, 105.66) |
14 | 915 | 10 | 1 | 4 | 1 | 15 | 43 | Wallace-KS (38.92, 101.76) | Wallace-KS (39.14, 101.48) | Wallace-KS (38.70, 102.05) | 15 | Wallace-KS (38.92, 101.76) | Logan-KS (38.91, 101.48) | Sherman-KS (39.13, 101.76) | Greeley-KS (38.70, 101.76) |
15 | 898 | 6 | 2 | 4 | 1 | 11 | 61 | Grayson-VA (36.75, 81.34) | Grayson-VA (36.56, 80.84) | Smyth-VA (36.93, 81.84) | 11 | Smyth-VA (36.75, 81.47) | Washington-VA (36.64, 81.61) | Wythe-VA (36.81, 81.28) | Washington-VA (36.69, 81.65) |
16 | 515 | 3 | 4 | 1 | 2 | 17 | 34 | Fairfax-VA (38.85, 77.22) | Fairfax-VA (38.84, 77.54) | City of Washington-DC (38.89, 76.91) | 7 | Fairfax-VA (38.78, 77.18) | Fairfax city-VA (38.84, 77.27) | Charles-MD (38.70, 77.10) | Falls Church-VA (38.87, 77.16) |
17 | 494 | 10 | 1 | 4 | 1 | 16 | 40 | New Castle-DE (39.56, 75.61) | New Castle-DE (39.83, 75.47) | New Castle-DE (39.30, 75.76) | 7 | New Castle-DE (39.71, 75.64) | Salem-NJ (39.65, 75.54) | Salem-NJ (39.69, 75.51) | Chester-PA (39.77, 75.74) |
18 | 362 | 10 | 1 | 4 | 1 | 18 | 32 | Giles-VA (37.32, 80.73) | Giles-VA (37.28, 81.01) | Giles-VA (37.32, 80.43) | 6 | Giles-VA (37.35, 80.56) | Craig-VA (37.38, 80.46) | Monroe-WV (37.43, 80.62) | Montgomery-VA (37.27, 80.52) |
19 | 313 | 10 | 1 | 4 | 1 | 20 | 28 | Yancey-NC (35.89, 82.33) | Yancey-NC (36.08, 82.40) | Yancey-NC (35.70, 82.26) | 7 | Yancey-NC (35.90, 82.30) | Buncombe-NC (35.82, 82.36) | Mitchell-NC (35.95, 82.20) | Mitchell-NC (35.99, 82.25) |
20 | 271 | 10 | 1 | 4 | 1 | 19 | 28 | DeKalb-GA (33.79, 84.23) | DeKalb-GA (33.97, 84.35) | DeKalb-GA (33.61, 84.12) | 7 | DeKalb-GA (33.75, 84.22) | Fulton-GA (33.75, 84.35) | Henry-GA (33.65, 84.22) | Gwinnett-GA (33.81, 84.12) |
21 | 66 | 10 | 1 | 4 | 1 | 21 | 17 | Saint Louis City-MO (38.65, 90.21) | Saint Louis City-MO (38.53, 90.26) | Saint Louis City-MO (38.77, 90.17) | 3 | Saint Louis City-MO (38.64, 90.24) | Saint Clair-IL (38.62, 90.18) | Saint Clair-IL (38.64, 90.18) | Saint Louis-MO (38.64, 90.30) |
22 | 43 | 10 | 1 | 4 | 1 | 22 | 9 | Roanoke city-VA (37.28, 79.96) | Roanoke city-VA (37.30, 79.88) | Roanoke city-VA (37.25, 80.04) | 3 | Roanoke city-VA (37.28, 79.97) | Roanoke-VA (37.32, 79.96) | Salem-VA (37.28, 80.01) | Roanoke-VA (37.28, 79.92) |