| 1. | Hunterdon County, NJ (Flemington, Lambertville, High Bridge) (pop. 121,989) | -28.4% |
| 2. | Douglas County, CO (Highlands Ranch, Parker, Castle Rock) (pop. 175,766) | -27.6% |
| 3. | Union County, NC (Monroe, Indian Trail, Weddington) (pop. 123,677) | -23.7% |
| 4. | Morris County, NJ (Morristown, Dover, Madison) (pop. 470,212) | -22.0% |
| 5. | Henry County, GA (Stockbridge, McDonough, Hampton) (pop. 119,341) | -21.4% |
| 6. | McHenry County, IL (Crystal Lake, Algonquin, Lake in the Hills) (pop. 260,077) | -21.3% |
| 7. | Washington County, RI (South Kingstown, North Kingstown, Westerly) (pop. 123,546) | -21.1% |
| 8. | Kane County, IL (Aurora, Elgin, Carpentersville) (pop. 404,119) | -21.0% |
| 9. | Rockingham County, NH (Salem, Derry, Portsmouth) (pop. 277,359) | -20.3% |
| 10. | Tolland County, CT (Vernon, Mansfield, Tolland) (pop. 136,364) | -20.1% |
| 11. | Iredell County, NC (Statesville, Mooresville, Troutman) (pop. 122,660) | -20.0% |
| 12. | Boulder County, CO (Boulder, Longmont, Lafayette) (pop. 291,288) | -19.8% |
| 13. | Loudoun County, VA (Ashburn, Leesburg, Sterling) (pop. 169,599) | -19.8% |
| 14. | Delaware County, OH (Delaware, Powell, Sunbury) (pop. 109,989) | -19.8% |
| 15. | Livingston County, MI (Howell, Brighton, Whitmore Lake) (pop. 156,951) | -19.8% |
| 16. | Somerset County, NJ (Somerset, North Plainfield, Bradley Gardens) (pop. 297,490) | -19.7% |
| 17. | Carroll County, MD (Eldersburg, Westminster, District 1, Taneytown) (pop. 150,897) | -19.7% |
| 18. | Warren County, NJ (Phillipsburg, Hackettstown, Washington) (pop. 102,437) | -19.0% |
| 19. | Will County, IL (Joliet, Bolingbrook, Homer Glen) (pop. 502,266) | -18.8% |
| 20. | Hall County, GA (Gainesville, Murrayville, Oakwood) (pop. 139,277) | -18.7% |
| 21. | Litchfield County, CT (Torrington, Watertown, Plymouth) (pop. 182,193) | -18.6% |
| 22. | Lake County, IL (Waukegan, North Chicago, Highland Park) (pop. 644,356) | -18.6% |
| 23. | Webb County, TX (Laredo, Bruni-Mirando, Webb) (pop. 193,117) | -18.6% |
| 24. | Cameron County, TX (Brownsville, Harlingen, San Benito) (pop. 335,227) | -18.5% |
| 25. | Collier County, FL (Naples, Golden Gate, Immokalee) (pop. 251,377) | -18.3% |
| 26. | Gwinnett County, GA (Dacula-Rocky Creek, Lawrenceville, Duluth) (pop. 588,448) | -18.3% |
| 27. | Cherokee County, GA (Woodstock, Lathemtown, Canton) (pop. 141,903) | -18.2% |
| 28. | Collin County, TX (Plano, McKinney, Allen) (pop. 491,675) | -18.1% |
| 29. | Sussex County, NJ (Hopatcong, Lake Mohawk, Newton) (pop. 144,166) | -17.6% |
| 30. | Warren County, OH (Mason, Lebanon, Landen) (pop. 158,383) | -17.6% |
| 31. | Medina County, OH (Brunswick, Medina, Wadsworth) (pop. 151,095) | -17.5% |
| 32. | Middlesex County, CT (Middletown, Cromwell, Old Saybrook) (pop. 155,071) | -17.2% |
| 33. | Monmouth County, NJ (Long Branch, Asbury Park, Tinton Falls) (pop. 615,301) | -16.9% |
| 34. | Shelby County, AL (Alabaster, Pelham, Helena) (pop. 143,293) | -16.5% |
| 35. | Plymouth County, MA (Brockton, Wareham, Middleborough) (pop. 472,822) | -16.5% |
| 36. | Denton County, TX (Denton, Lewisville, Flower Mound) (pop. 432,976) | -16.3% |
| 37. | Mohave County, AZ (Lake Havasu City, Bullhead City, Kingman) (pop. 155,032) | -16.2% |
| 38. | Suffolk County, NY (Brentwood, West Babylon, Commack) (pop. 1,419,369) | -15.9% |
| 39. | Beaufort County, SC (Hilton Head Island, St. Helena, Beaufort) (pop. 120,937) | -15.9% |
| 40. | Hidalgo County, TX (McAllen, Southeast Hidalgo, Edinburg) (pop. 569,463) | -15.6% |
| 41. | St. Clair County, MI (Port Huron, Marysville, St. Clair) (pop. 164,235) | -15.0% |
| 42. | Clermont County, OH (Milford, Summerside, Mount Carmel) (pop. 177,977) | -14.8% |
| 43. | Coconino County, AZ (Coconino, Flagstaff, Sedona) (pop. 116,320) | -14.5% |
| 44. | Aiken County, SC (Aiken, North Augusta, Beech Island) (pop. 142,552) | -14.5% |
| 45. | Orange County, NC (Chapel Hill, Carrboro, Hillsborough) (pop. 118,227) | -14.5% |
| 46. | Williamson County, TN (Franklin, Brentwood, Boston) (pop. 126,638) | -14.5% |
| 47. | Ada County, ID (Boise, Meridian, Orchard) (pop. 300,904) | -14.4% |
| 48. | DuPage County, IL (Naperville, Wheaton, Downers Grove) (pop. 904,161) | -14.4% |
| 49. | Dutchess County, NY (Poughkeepsie, Wappinger, East Fishkill) (pop. 280,150) | -14.3% |
| 50. | El Paso County, TX (El Paso, Socorro, San Elizario) (pop. 679,622) | -14.2% |
| 51. | Orange County, CA (North Coast, Santa Ana, Anaheim) (pop. 2,846,289) | -14.1% |
| 52. | Denver County, CO (Denver, Holly Hills) (pop. 554,636) | -14.1% |
| 53. | Waukesha County, WI (Waukesha, Brookfield, New Berlin) (pop. 360,767) | -14.1% |
| 54. | El Dorado County, CA (South El Dorado, North El Dorado, South Lake Tahoe) (pop. 156,299) | -14.0% |
| 55. | Fairfield County, CT (Bridgeport, Stamford, Norwalk) (pop. 882,567) | -13.8% |
| 56. | Santa Fe County, NM (Santa Fe, Eldorado at Santa Fe, La Cienega) (pop. 129,292) | -13.8% |
| 57. | Cabarrus County, NC (Concord, Kannapolis, Harrisburg) (pop. 131,063) | -13.8% |
| 58. | Maricopa County, AZ (Phoenix, Mesa, Glendale) (pop. 3,072,149) | -13.7% |
| 59. | Washington County, WI (West Bend, Germantown, Hartford) (pop. 117,493) | -13.6% |
| 60. | DeSoto County, MS (Southaven, Olive Branch, Horn Lake) (pop. 107,199) | -13.5% |
| 61. | Johnston County, NC (Smithfield, Clayton, Selma) (pop. 121,965) | -13.5% |
| 62. | Williamson County, TX (Round Rock, Georgetown, Cedar Park) (pop. 249,967) | -13.3% |
| 63. | Bucks County, PA (Levittown, Morrisville, Croydon) (pop. 597,635) | -13.3% |
| 64. | Marin County, CA (Ross Valley, San Rafael, Northeast Marin) (pop. 247,289) | -13.2% |
| 65. | Cobb County, GA (Northeast Cobb, Marietta, Smyrna) (pop. 607,751) | -13.1% |
| 66. | Butler County, PA (Butler, Fernway, Homeacre-Lyndora) (pop. 174,083) | -13.1% |
| 67. | Washtenaw County, MI (Ann Arbor, Ypsilanti, Saline) (pop. 322,895) | -12.9% |
| 68. | Chester County, PA (West Chester, Phoenixville, Coatesville) (pop. 433,501) | -12.8% |
| 69. | Martin County, FL (Palm City, Stuart, Hobe Sound) (pop. 126,731) | -12.8% |
| 70. | Worcester County, MA (Worcester, Leominster, Fitchburg) (pop. 750,963) | -12.7% |
| 71. | Hamilton County, IN (Fishers, Carmel, Noblesville) (pop. 182,740) | -12.5% |
| 72. | Santa Clara County, CA (San Jose, Sunnyvale, Santa Clara) (pop. 1,682,585) | -12.5% |
| 73. | Canyon County, ID (Nampa, Caldwell, Huston) (pop. 131,441) | -12.5% |
| 74. | Westchester County, NY (Yonkers, Greenburgh, New Rochelle) (pop. 923,459) | -12.4% |
| 75. | Monroe County, PA (East Stroudsburg, Stroudsburg, Arlington Heights) (pop. 138,687) | -12.4% |
| 76. | Saratoga County, NY (Clifton Park, Saratoga Springs, Halfmoon) (pop. 200,635) | -12.3% |
| 77. | Norfolk County, MA (Quincy, Brookline, Weymouth) (pop. 650,308) | -12.3% |
| 78. | Portage County, OH (Kent, Aurora, Streetsboro) (pop. 152,061) | -12.2% |
| 79. | Clay County, FL (Lakeside, Middleburg-Clay Hill, Fleming Island) (pop. 140,814) | -12.1% |
| 80. | Frederick County, MD (Frederick, Ballenger Creek, Linganore-Bartonsville) (pop. 195,277) | -12.1% |
| 81. | Catawba County, NC (Hickory, Newton, St. Stephens) (pop. 141,685) | -12.1% |
| 82. | La Salle County, IL (Ottawa, Streator, Peru) (pop. 111,509) | -11.9% |
| 83. | Washington County, OR (Beaverton, Hillsboro, Somerset West-Rock Creek) (pop. 445,342) | -11.9% |
| 84. | Oakland County, MI (Farmington Hills, Troy, Southfield) (pop. 1,194,156) | -11.9% |
| 85. | Orange County, FL (Orlando, Southwest Orange, Alafaya) (pop. 896,344) | -11.9% |
| 86. | Davidson County, NC (Lexington, Thomasville, Tyro) (pop. 147,246) | -11.8% |
| 87. | Ellis County, TX (Waxahachie, Ennis, Midlothian) (pop. 111,360) | -11.8% |
| 88. | Dona Ana County, NM (Las Cruces, Dona Ana-Hill, South Dona Ana) (pop. 174,682) | -11.7% |
| 89. | Howard County, MD (Columbia, Ellicott City, Scaggsville) (pop. 247,842) | -11.6% |
| 90. | Wake County, NC (Raleigh, Cary, Apex) (pop. 627,846) | -11.6% |
| 91. | Hampshire County, MA (Amherst, Northampton, South Hadley) (pop. 152,251) | -11.6% |
| 92. | Bernalillo County, NM (Albuquerque, Rio Rancho, South Valley) (pop. 556,678) | -11.5% |
| 93. | Washington County, MN (Woodbury, Cottage Grove, Oakdale) (pop. 201,130) | -11.4% |
| 94. | Kankakee County, IL (Kankakee, Bourbonnais, Bradley) (pop. 103,833) | -11.4% |
| 95. | Seminole County, FL (Altamonte Springs, Sanford, Winter Springs) (pop. 365,196) | -11.4% |
| 96. | Burlington County, NJ (Moorestown-Lenola, Franklin Park, Browns Mills) (pop. 423,394) | -11.3% |
| 97. | Weld County, CO (Greeley, Windsor, Evans) (pop. 180,936) | -11.3% |
| 98. | Genesee County, MI (Flint, Burton, Beecher) (pop. 436,141) | -11.3% |
| 99. | Bristol County, MA (New Bedford, Fall River, Taunton) (pop. 534,678) | -11.3% |
| 100. | Prince William County, VA (Dale City, Manassas, Marumsco) (pop. 280,813) | -11.2% |
| 101. | Licking County, OH (Newark, Pataskala, Heath) (pop. 145,491) | -11.2% |