| 1. | Kenai Peninsula Borough, AK (Kenai, Kalifornsky, Sterling) (pop. 49,691) | 1.7 |
| 2. | Apache County, AZ (Sweetwater, Chinle, Fort Defiance) (pop. 69,423) | 2.9 |
| 3. | Fergus County, MT (Lewistown, Hanover, Roy) (pop. 11,893) | 3.1 |
| 4. | Phillips County, MT (Malta, Whitewater, Saco) (pop. 4,601) | 3.5 |
| 5. | Campbell County, WY (Gillette, Antelope Valley-Crestview, Wright) (pop. 33,698) | 3.7 |
| 6. | Mohave County, AZ (Lake Havasu City, Bullhead City, Kingman) (pop. 155,032) | 3.7 |
| 7. | Lake County, CA (Clearlake, Lakeport, Hidden Valley Lake) (pop. 58,309) | 3.9 |
| 8. | Whatcom County, WA (Bellingham, Lynden, Ferndale) (pop. 166,814) | 4.1 |
| 9. | Cass County, MN (Walker, East Gull Lake, Lake Shore) (pop. 27,150) | 4.1 |
| 10. | La Plata County, CO (Durango, Bayfield, Ignacio) (pop. 43,941) | 4.2 |
| 11. | Jackson County, SD (Kadoka, Wanblee, Interior) (pop. 2,930) | 4.4 |
| 12. | Hillsborough County, NH (Manchester, Nashua, Merrimack) (pop. 380,841) | 4.4 |
| 13. | Fremont County, WY (Wind River, Riverton, Lander) (pop. 35,804) | 4.4 |
| 14. | Billings County, ND (Medora) (pop. 888) | 4.4 |
| 15. | Essex County, NY (North Elba, Ticonderoga, Moriah) (pop. 38,851) | 4.4 |
| 16. | Yavapai County, AZ (Prescott, Verde, Mingus Mountain) (pop. 167,517) | 4.5 |
| 17. | Kitsap County, WA (Bremerton, Bainbridge Island, Silverdale) (pop. 231,969) | 4.5 |
| 18. | Hancock County, ME (Ellsworth, Bucksport, Bar Harbor) (pop. 51,791) | 4.7 |
| 19. | Santa Fe County, NM (Santa Fe, Eldorado at Santa Fe, La Cienega) (pop. 129,292) | 4.8 |
| 20. | Converse County, WY (Douglas, Glenrock, Rolling Hills) (pop. 12,052) | 4.8 |
| 21. | San Juan County, NM (Farmington, Shiprock, Simpson-Chaco) (pop. 113,801) | 4.9 |
| 22. | San Benito County, CA (Hollister, Aromas, Ridgemark) (pop. 53,234) | 5.0 |
| 23. | Laramie County, WY (Cheyenne, Ranchettes, Warren AFB) (pop. 81,607) | 5.1 |
| 24. | Snohomish County, WA (Everett, Edmonds, Seattle Hill-Silver Firs) (pop. 606,024) | 5.1 |
| 25. | Park County, WY (Cody, Powell, Yellowstone National Park) (pop. 25,786) | 5.2 |
| 26. | Sublette County, WY (Pinedale, Marbleton, Big Piney) (pop. 5,920) | 5.2 |
| 27. | Custer County, SD (Custer, Hermosa, Buffalo Gap) (pop. 7,275) | 5.2 |
| 28. | Ashland County, WI (Ashland, Sanborn, White River) (pop. 16,866) | 5.3 |
| 29. | Vilas County, WI (Arbor Vitae, Lincoln, St. Germain) (pop. 21,033) | 5.3 |
| 30. | Nevada County, CA (Donner, Truckee, Grass Valley) (pop. 92,033) | 5.4 |
| 31. | Natrona County, WY (Casper, Hells Half Acre, Mills) (pop. 66,533) | 5.4 |
| 32. | Placer County, CA (Roseville, Loomis Basin-Folsom Lake, Rocklin) (pop. 248,399) | 5.4 |
| 33. | Coconino County, AZ (Coconino, Flagstaff, Sedona) (pop. 116,320) | 5.4 |
| 34. | Mendocino County, CA (Ukiah, Redwood-Potter, Fort Bragg) (pop. 86,265) | 5.4 |
| 35. | Albany County, WY (Laramie, South Albany, Rock River) (pop. 32,014) | 5.5 |
| 36. | Mercer County, ND (Beulah, Hazen, Stanton) (pop. 8,644) | 5.5 |
| 37. | Chittenden County, VT (Burlington, Essex, Colchester) (pop. 146,571) | 5.5 |
| 38. | Litchfield County, CT (Torrington, Watertown, Plymouth) (pop. 182,193) | 5.5 |
| 39. | St. Louis County, MN (Duluth, Hibbing, Virginia) (pop. 200,528) | 5.6 |
| 40. | Scotts Bluff County, NE (Scottsbluff, Gering, Mitchell) (pop. 36,951) | 5.6 |
| 41. | Honolulu County, HI (Honolulu, Urban Honolulu, Ewa) (pop. 876,156) | 5.6 |
| 42. | Lewis and Clark County, MT (Helena, Helena Valley Southeast, Helena Valley West Central) (pop. 55,716) | 5.6 |
| 43. | Montezuma County, CO (Cortez, Ute Mountain, Mancos) (pop. 23,830) | 5.6 |
| 44. | Monterey County, CA (Salinas, Seaside, Monterey) (pop. 401,762) | 5.7 |
| 45. | Siskiyou County, CA (Yreka, Mount Shasta, Weed) (pop. 44,301) | 5.7 |
| 46. | Aroostook County, ME (Presque Isle, Caribou, Houlton) (pop. 73,938) | 5.8 |
| 47. | Santa Cruz County, CA (Santa Cruz, Watsonville, San Lorenzo Valley) (pop. 255,602) | 5.8 |
| 48. | Uintah County, UT (Vernal, Maeser, Naples) (pop. 25,224) | 5.8 |
| 49. | Tooele County, UT (Tooele, Grantsville, Erda) (pop. 40,735) | 5.9 |
| 50. | Pima County, AZ (Tucson, Casas Adobes, Catalina Foothills) (pop. 843,746) | 5.9 |
| 51. | Dunn County, ND (Killdeer, Halliday, Dodge) (pop. 3,600) | 5.9 |
| 52. | Matanuska-Susitna Borough, AK (Knik-Fairview, Lakes, Wasilla) (pop. 59,322) | 5.9 |
| 53. | Missaukee County, MI (Lake City, McBain, Jennings) (pop. 14,478) | 5.9 |
| 54. | Brevard County, FL (Palm Bay, Melbourne, Titusville) (pop. 476,230) | 6.0 |
| 55. | Shasta County, CA (Redding, Central Shasta, Anderson) (pop. 163,256) | 6.0 |
| 56. | Anchorage Municipality, AK (Anchorage) (pop. 260,283) | 6.0 |
| 57. | Douglas County, CO (Highlands Ranch, Parker, Castle Rock) (pop. 175,766) | 6.1 |
| 58. | Kent County, RI (Warwick, Coventry, West Warwick) (pop. 167,090) | 6.1 |
| 59. | Duchesne County, UT (Roosevelt, Duchesne, Myton) (pop. 14,371) | 6.2 |
| 60. | San Luis Obispo County, CA (San Luis Obispo, Paso Robles, Atascadero) (pop. 246,681) | 6.2 |
| 61. | Burleigh County, ND (Bismarck, Lincoln, Wing) (pop. 69,416) | 6.2 |
| 62. | Washington County, RI (South Kingstown, North Kingstown, Westerly) (pop. 123,546) | 6.2 |
| 63. | Forest County, WI (Crandon, Laona, Wabeno) (pop. 10,024) | 6.2 |
| 64. | Teton County, WY (Jackson Hole, Jackson, Hoback) (pop. 18,251) | 6.2 |
| 65. | Lane County, OR (Eugene, Springfield, Badger Mountain) (pop. 322,959) | 6.2 |
| 66. | Pennington County, SD (Rapid City, Rapid Valley, Box Elder) (pop. 88,565) | 6.3 |
| 67. | Grafton County, NH (Lebanon, Hanover, Littleton) (pop. 81,743) | 6.3 |
| 68. | Minnehaha County, SD (Sioux Falls, Brandon, Dell Rapids) (pop. 148,281) | 6.3 |
| 69. | Volusia County, FL (Deltona, Daytona Beach, Port Orange) (pop. 443,343) | 6.4 |
| 70. | Orange County, FL (Orlando, Southwest Orange, Alafaya) (pop. 896,344) | 6.4 |
| 71. | King County, WA (Seattle, East Seattle, Bellevue) (pop. 1,737,034) | 6.4 |
| 72. | Yolo County, CA (Davis, Woodland, East Yolo) (pop. 168,660) | 6.5 |
| 73. | Rockingham County, NH (Salem, Derry, Portsmouth) (pop. 277,359) | 6.6 |
| 74. | Maui County, HI (Kahului, Kihei, Wailuku) (pop. 128,094) | 6.6 |
| 75. | Washington County, UT (St. George, Hurricane, Washington) (pop. 90,354) | 6.6 |
| 76. | Miami-Dade County, FL (Miami, Kendale Lakes-Lindgren Acres, Hialeah) (pop. 2,253,362) | 6.7 |
| 77. | Juneau City and Borough, AK (Juneau) (pop. 30,711) | 6.7 |
| 78. | Belknap County, NH (Laconia, Gilford, Belmont) (pop. 56,325) | 6.7 |
| 79. | Citrus County, FL (Homosassa Springs, Beverly Hills, Hernando) (pop. 118,085) | 6.7 |
| 80. | Cochise County, AZ (Sierra Vista, Sierra Vista Southeast, Douglas) (pop. 117,755) | 6.7 |
| 81. | Bennington County, VT (Bennington, Shaftsbury, Pownal) (pop. 36,994) | 6.7 |
| 82. | Contra Costa County, CA (Central Contra Costa, West Contra Costa, Concord) (pop. 948,816) | 6.7 |
| 83. | Arapahoe County, CO (South Aurora, Southwest Arapahoe, Centennial) (pop. 487,967) | 6.8 |
| 84. | Lee County, FL (Cape Coral, Fort Myers, North Fort Myers) (pop. 440,888) | 6.8 |
| 85. | Steuben County, NY (Corning, Hornell, Erwin) (pop. 98,726) | 6.8 |
| 86. | Broward County, FL (Fort Lauderdale, Hollywood, Pembroke Pines) (pop. 1,623,018) | 6.8 |
| 87. | Humboldt County, CA (Eureka, North Coastal, Arcata) (pop. 126,518) | 6.8 |
| 88. | Pinellas County, FL (St. Petersburg, Clearwater, Boca Ciega) (pop. 921,482) | 6.8 |
| 89. | Sweetwater County, WY (Rock Springs, Green River, North Rock Springs) (pop. 37,613) | 6.9 |
| 90. | Box Elder County, UT (Brigham City, Tremonton, Perry) (pop. 42,745) | 6.9 |
| 91. | Salt Lake County, UT (Salt Lake City, West Valley City, Sandy) (pop. 898,387) | 6.9 |
| 92. | Sutter County, CA (Yuba City, South Yuba City, Tierra Buena) (pop. 78,930) | 6.9 |
| 93. | Pueblo County, CO (Pueblo, Pueblo West, St. Charles Mesa) (pop. 141,472) | 6.9 |
| 94. | Josephine County, OR (Grants Pass, Northwest Josephine, Redwood) (pop. 75,726) | 6.9 |
| 95. | Hillsborough County, FL (Tampa, Citrus Park-Fern Lake, Brandon) (pop. 998,948) | 7.0 |
| 96. | Alachua County, FL (Gainesville, Alachua, High Springs) (pop. 217,955) | 7.0 |
| 97. | Sarasota County, FL (Sarasota, Interior County, Gulf Gate-Osprey) (pop. 325,957) | 7.0 |
| 98. | Calaveras County, CA (West Point-Wilseyville, Arnold, Rancho Calaveras) (pop. 40,554) | 7.0 |
| 99. | Clark County, WA (Vancouver, Hazel Dell, Orchards) (pop. 345,238) | 7.0 |
| 100. | Boulder County, CO (Boulder, Longmont, Lafayette) (pop. 291,288) | 7.1 |
| 101. | Washington County, OR (Beaverton, Hillsboro, Somerset West-Rock Creek) (pop. 445,342) | 7.1 |