| 1 | La Crosse County | Wisconsin | 121,060 | 0.2 % | 2.8 % |
| 2 | La Paz County | Arizona | 16,992 | 2.7 % | 6.3 % |
| 3 | La Plata County | Colorado | 56,823 | 2.1 % | 3.8 % |
| 4 | La Salle County | Texas | 6,679 | 0.3 % | 4.8 % |
| 5 | Labette County | Kansas | 19,692 | -2.4 % | 3.9 % |
| 6 | Lac qui Parle County | Minnesota | 6,636 | -1.2 % | 3.4 % |
| 7 | Lackawanna County | Pennsylvania | 216,859 | 0.4 % | 4.7 % |
| 8 | Laclede County | Missouri | 36,738 | 1.9 % | 5.0 % |
| 9 | Lafayette County | Mississippi | 59,843 | 7.2 % | 3.2 % |
| 10 | Lafayette County | Missouri | 33,511 | 1.6 % | 3.9 % |
| 11 | Lafayette County | Wisconsin | 17,306 | 4.3 % | 2.7 % |
| 12 | Lafayette County | Florida | 8,640 | 5.0 % | 5.3 % |
| 13 | Lafayette County | Arkansas | 6,015 | -4.6 % | 5.6 % |
| 14 | Lafayette Parish | Louisiana | 254,241 | 5.2 % | 3.6 % |
| 15 | Lafourche Parish | Louisiana | 95,342 | -2.3 % | 3.8 % |
| 16 | LaGrange County | Indiana | 41,122 | 1.7 % | 3.3 % |
| 17 | Lake and Peninsula Borough | Alaska | 1,315 | -10.9 % | 5.8 % |
| 18 | Lake County | Illinois | 718,604 | 0.6 % | 4.7 % |
| 19 | Lake County | Indiana | 502,955 | 0.9 % | 5.1 % |
| 20 | Lake County | Florida | 444,204 | 15.7 % | 4.2 % |
| 21 | Lake County | Ohio | 232,360 | -0.1 % | 3.8 % |
| 22 | Lake County | California | 67,764 | -0.6 % | 7.3 % |
| 23 | Lake County | Montana | 33,403 | 7.3 % | 4.0 % |
| 24 | Lake County | Michigan | 13,005 | 7.5 % | 7.6 % |
| 25 | Lake County | South Dakota | 11,006 | -0.5 % | 1.8 % |
| 26 | Lake County | Minnesota | 10,698 | -1.9 % | 4.2 % |
| 27 | Lake County | Oregon | 8,194 | 0.4 % | 6.2 % |
| 28 | Lake County | Colorado | 7,369 | -0.9 % | 3.5 % |
| 29 | Lake County | Tennessee | 6,422 | -8.2 % | 5.1 % |
| 30 | Lake of the Woods County | Minnesota | 3,797 | 0.7 % | 5.0 % |
| 31 | Lamar County | Mississippi | 66,734 | 3.9 % | 3.3 % |
| 32 | Lamar County | Texas | 51,249 | 2.3 % | 4.1 % |
| 33 | Lamar County | Georgia | 20,690 | 11.8 % | 4.2 % |
| 34 | Lamar County | Alabama | 13,543 | -3.1 % | 3.2 % |
| 35 | Lamb County | Texas | 12,687 | -2.7 % | 3.6 % |
| 36 | Lamoille County | Vermont | 26,248 | 1.2 % | 3.0 % |
| 37 | LaMoure County | North Dakota | 4,051 | -0.9 % | 2.4 % |
| 38 | Lampasas County | Texas | 23,539 | 8.9 % | 4.2 % |
| 39 | Lancaster County | Pennsylvania | 563,293 | 1.9 % | 3.4 % |
| 40 | Lancaster County | Nebraska | 332,857 | 3.2 % | 2.9 % |
| 41 | Lancaster County | South Carolina | 111,652 | 16.3 % | 4.7 % |
| 42 | Lancaster County | Virginia | 11,062 | 1.3 % | 4.9 % |
| 43 | Lander County | Nevada | 5,785 | 0.9 % | 4.8 % |
| 44 | Lane County | Oregon | 382,396 | -0.2 % | 5.1 % |
| 45 | Lane County | Kansas | 1,482 | -5.9 % | 4.1 % |
| 46 | Langlade County | Wisconsin | 19,535 | 0.2 % | 4.0 % |
| 47 | Lanier County | Georgia | 10,464 | 5.9 % | 3.9 % |
| 48 | Lapeer County | Michigan | 89,168 | 0.6 % | 5.2 % |
| 49 | LaPorte County | Indiana | 111,348 | -1.0 % | 4.1 % |
| 50 | Laramie County | Wyoming | 101,783 | 1.3 % | 3.4 % |
| 51 | Larimer County | Colorado | 374,574 | 4.3 % | 3.9 % |
| 52 | Larue County | Kentucky | 15,128 | 1.8 % | 4.5 % |
| 53 | Las Animas County | Colorado | 14,518 | -0.3 % | 6.2 % |
| 54 | LaSalle County | Illinois | 108,390 | -1.1 % | 5.4 % |
| 55 | LaSalle Parish | Louisiana | 14,702 | -0.7 % | 3.6 % |
| 56 | Lassen County | California | 28,340 | -13.4 % | 6.7 % |
| 57 | Latah County | Idaho | 42,180 | 6.7 % | 3.3 % |
| 58 | Latimer County | Oklahoma | 9,509 | 0.6 % | 4.1 % |
| 59 | Lauderdale County | Alabama | 97,502 | 4.2 % | 3.1 % |
| 60 | Lauderdale County | Mississippi | 70,588 | -3.3 % | 3.8 % |
| 61 | Lauderdale County | Tennessee | 24,630 | -2.0 % | 4.8 % |
| 62 | Laurel County | Kentucky | 63,353 | 1.2 % | 5.6 % |
| 63 | Laurens County | South Carolina | 70,545 | 4.5 % | 4.8 % |
| 64 | Laurens County | Georgia | 50,287 | 1.4 % | 3.8 % |
| 65 | Lavaca County | Texas | 20,605 | 1.3 % | 3.3 % |
| 66 | Lawrence County | Pennsylvania | 84,233 | -2.1 % | 5.0 % |
| 67 | Lawrence County | Ohio | 55,829 | -4.1 % | 5.3 % |
| 68 | Lawrence County | Tennessee | 46,467 | 5.2 % | 4.2 % |
| 69 | Lawrence County | Indiana | 45,192 | 0.4 % | 3.6 % |
| 70 | Lawrence County | Missouri | 39,151 | 3.0 % | 4.2 % |
| 71 | Lawrence County | Alabama | 33,567 | 1.5 % | 2.5 % |
| 72 | Lawrence County | South Dakota | 28,809 | 11.8 % | 1.9 % |
| 73 | Lawrence County | Arkansas | 16,305 | 0.5 % | 4.2 % |
| 74 | Lawrence County | Kentucky | 15,798 | -3.0 % | 7.0 % |
| 75 | Lawrence County | Illinois | 14,801 | -3.3 % | 4.5 % |
| 76 | Lawrence County | Mississippi | 11,672 | -2.9 % | 4.1 % |
| 77 | Le Flore County | Oklahoma | 49,854 | 3.6 % | 4.0 % |
| 78 | Le Sueur County | Minnesota | 29,458 | 2.7 % | 5.2 % |
| 79 | Lea County | New Mexico | 75,151 | 0.9 % | 3.5 % |
| 80 | Leake County | Mississippi | 21,462 | 0.9 % | 3.4 % |
| 81 | Leavenworth County | Kansas | 84,670 | 3.4 % | 4.1 % |
| 82 | Lebanon County | Pennsylvania | 145,319 | 1.4 % | 3.9 % |
| 83 | Lee County | Florida | 860,959 | 13.2 % | 4.3 % |
| 84 | Lee County | Alabama | 187,847 | 7.7 % | 2.5 % |
| 85 | Lee County | Mississippi | 83,012 | -0.4 % | 3.5 % |
| 86 | Lee County | North Carolina | 68,537 | 8.3 % | 3.8 % |
| 87 | Lee County | Georgia | 34,073 | 2.8 % | 2.8 % |
| 88 | Lee County | Illinois | 33,544 | -1.8 % | 4.6 % |
| 89 | Lee County | Iowa | 32,376 | -3.5 % | 4.0 % |
| 90 | Lee County | Virginia | 21,780 | -1.8 % | 4.4 % |
| 91 | Lee County | Texas | 18,451 | 5.5 % | 3.6 % |
| 92 | Lee County | South Carolina | 15,958 | -3.5 % | 6.0 % |
| 93 | Lee County | Arkansas | 8,104 | -5.7 % | 6.2 % |
| 94 | Lee County | Kentucky | 7,313 | -1.0 % | 4.9 % |
| 95 | Leelanau County | Michigan | 22,871 | 2.6 % | 4.7 % |
| 96 | Leflore County | Mississippi | 26,157 | -8.2 % | 6.2 % |
| 97 | Lehigh County | Pennsylvania | 385,655 | 3.0 % | 4.6 % |
| 98 | Lemhi County | Idaho | 8,397 | 5.3 % | 4.2 % |
| 99 | Lenawee County | Michigan | 97,746 | -1.7 % | 5.2 % |
| 100 | Lenoir County | North Carolina | 55,332 | 0.4 % | 4.0 % |
| 101 | Leon County | Florida | 300,488 | 2.8 % | 4.1 % |
| 102 | Leon County | Texas | 16,698 | 5.9 % | 3.8 % |
| 103 | Leslie County | Kentucky | 9,729 | -7.5 % | 5.5 % |
| 104 | Letcher County | Kentucky | 20,139 | -6.5 % | 5.7 % |
| 105 | Levy County | Florida | 47,765 | 11.3 % | 4.6 % |
| 106 | Lewis and Clark County | Montana | 75,129 | 5.9 % | 3.1 % |
| 107 | Lewis County | Washington | 87,049 | 6.0 % | 5.6 % |
| 108 | Lewis County | New York | 26,570 | -0.0 % | 4.3 % |
| 109 | Lewis County | West Virginia | 16,477 | -3.2 % | 4.8 % |
| 110 | Lewis County | Tennessee | 13,418 | 6.6 % | 4.2 % |
| 111 | Lewis County | Kentucky | 12,875 | -1.6 % | 8.2 % |
| 112 | Lewis County | Missouri | 9,852 | -1.8 % | 4.6 % |
| 113 | Lewis County | Idaho | 3,728 | 5.8 % | 4.4 % |
| 114 | Lexington city | Virginia | 7,802 | 6.7 % | 5.0 % |
| 115 | Lexington County | South Carolina | 313,774 | 6.8 % | 3.8 % |
| 116 | Liberty County | Texas | 115,042 | 25.5 % | 5.4 % |
| 117 | Liberty County | Georgia | 68,607 | 5.1 % | 3.9 % |
| 118 | Liberty County | Florida | 7,955 | -0.3 % | 4.5 % |
| 119 | Liberty County | Montana | 1,934 | -1.3 % | 2.2 % |
| 120 | Licking County | Ohio | 184,898 | 3.6 % | 4.4 % |
| 121 | Limestone County | Alabama | 118,942 | 14.9 % | 2.4 % |
| 122 | Limestone County | Texas | 22,569 | 1.9 % | 4.4 % |
| 123 | Lincoln County | North Carolina | 97,611 | 12.4 % | 3.4 % |
| 124 | Lincoln County | South Dakota | 75,244 | 15.5 % | 1.8 % |
| 125 | Lincoln County | Missouri | 65,888 | 10.6 % | 3.9 % |
| 126 | Lincoln County | Oregon | 51,212 | 1.6 % | 6.0 % |
| 127 | Lincoln County | Tennessee | 36,751 | 4.0 % | 3.7 % |
| 128 | Lincoln County | Maine | 36,491 | 3.6 % | 3.3 % |
| 129 | Lincoln County | Oklahoma | 34,972 | 4.5 % | 3.6 % |
| 130 | Lincoln County | Mississippi | 34,956 | 0.1 % | 4.0 % |
| 131 | Lincoln County | Nebraska | 33,319 | -3.9 % | 2.7 % |
| 132 | Lincoln County | Wisconsin | 28,461 | 0.2 % | 3.6 % |
| 133 | Lincoln County | Kentucky | 24,910 | 2.6 % | 5.4 % |
| 134 | Lincoln County | Montana | 22,184 | 12.7 % | 6.3 % |
| 135 | Lincoln County | Wyoming | 21,000 | 7.2 % | 3.0 % |
| 136 | Lincoln County | New Mexico | 20,025 | -1.2 % | 4.3 % |
| 137 | Lincoln County | West Virginia | 19,377 | -5.3 % | 5.1 % |
| 138 | Lincoln County | Arkansas | 12,868 | -0.5 % | 5.7 % |
| 139 | Lincoln County | Washington | 11,862 | 9.0 % | 5.8 % |
| 140 | Lincoln County | Georgia | 8,049 | 4.7 % | 3.9 % |
| 141 | Lincoln County | Colorado | 5,598 | -1.3 % | 4.8 % |
| 142 | Lincoln County | Minnesota | 5,564 | -1.6 % | 4.5 % |
| 143 | Lincoln County | Idaho | 5,556 | 8.3 % | 4.2 % |
| 144 | Lincoln County | Nevada | 4,345 | -3.5 % | 5.0 % |
| 145 | Lincoln County | Kansas | 2,928 | -0.3 % | 4.1 % |
| 146 | Lincoln Parish | Louisiana | 48,243 | -0.3 % | 4.5 % |
| 147 | Linn County | Iowa | 231,762 | 0.6 % | 3.8 % |
| 148 | Linn County | Oregon | 132,474 | 3.0 % | 5.5 % |
| 149 | Linn County | Missouri | 11,910 | 0.3 % | 4.0 % |
| 150 | Linn County | Kansas | 9,841 | 2.6 % | 5.2 % |
| 151 | Lipscomb County | Texas | 2,880 | -5.9 % | 3.2 % |
| 152 | Little River County | Arkansas | 11,626 | -3.3 % | 4.2 % |
| 153 | Live Oak County | Texas | 11,967 | 5.6 % | 4.9 % |
| 154 | Livingston County | Michigan | 196,976 | 1.6 % | 3.6 % |
| 155 | Livingston County | New York | 61,561 | -0.4 % | 3.8 % |
| 156 | Livingston County | Illinois | 35,375 | -1.3 % | 4.0 % |
| 157 | Livingston County | Missouri | 14,658 | 0.7 % | 3.6 % |
| 158 | Livingston County | Kentucky | 8,815 | -0.8 % | 5.2 % |
| 159 | Livingston Parish | Louisiana | 152,886 | 7.4 % | 3.8 % |
| 160 | Llano County | Texas | 23,163 | 8.9 % | 4.0 % |
| 161 | Logan County | Oklahoma | 53,860 | 8.7 % | 3.3 % |
| 162 | Logan County | Ohio | 46,085 | -0.1 % | 4.3 % |
| 163 | Logan County | West Virginia | 30,560 | -6.2 % | 4.9 % |
| 164 | Logan County | Kentucky | 28,467 | 3.8 % | 4.7 % |
| 165 | Logan County | Illinois | 27,518 | -1.7 % | 4.8 % |
| 166 | Logan County | Arkansas | 21,457 | 1.5 % | 4.5 % |
| 167 | Logan County | Colorado | 20,755 | -3.6 % | 3.5 % |
| 168 | Logan County | Kansas | 2,694 | -2.4 % | 2.8 % |
| 169 | Logan County | North Dakota | 1,880 | 0.6 % | 3.0 % |
| 170 | Logan County | Nebraska | 694 | -3.7 % | 2.8 % |
| 171 | Long County | Georgia | 20,439 | 26.5 % | 3.6 % |
| 172 | Lonoke County | Arkansas | 76,389 | 3.2 % | 3.5 % |
| 173 | Lorain County | Ohio | 322,030 | 2.9 % | 4.3 % |
| 174 | Los Alamos County | New Mexico | 19,675 | 1.3 % | 1.8 % |
| 175 | Los Angeles County | California | 9,757,179 | -2.6 % | 5.7 % |
| 176 | Loudon County | Tennessee | 62,129 | 13.2 % | 3.3 % |
| 177 | Loudoun County | Virginia | 443,380 | 5.3 % | 3.1 % |
| 178 | Louisa County | Virginia | 42,109 | 12.0 % | 3.6 % |
| 179 | Louisa County | Iowa | 10,630 | -1.9 % | 3.8 % |
| 180 | Loup County | Nebraska | 582 | -3.8 % | 4.0 % |
| 181 | Love County | Oklahoma | 10,423 | 2.8 % | 5.5 % |
| 182 | Loving County | Texas | 48 | -26.2 % | 0.7 % |
| 183 | Lower Connecticut River Valley Planning Region | Connecticut | 177,540 | 1.9 % | 3.4 % |
| 184 | Lowndes County | Georgia | 122,082 | 3.2 % | 3.9 % |
| 185 | Lowndes County | Mississippi | 57,210 | -2.8 % | 3.9 % |
| 186 | Lowndes County | Alabama | 9,485 | -8.1 % | 4.9 % |
| 187 | Lubbock County | Texas | 327,394 | 5.4 % | 3.5 % |
| 188 | Lucas County | Ohio | 426,291 | -1.2 % | 6.0 % |
| 189 | Lucas County | Iowa | 8,758 | 1.4 % | 3.8 % |
| 190 | Luce County | Michigan | 6,328 | -1.3 % | 7.8 % |
| 191 | Lumpkin County | Georgia | 36,016 | 7.6 % | 3.4 % |
| 192 | Luna County | New Mexico | 25,878 | 1.8 % | 13.0 % |
| 193 | Lunenburg County | Virginia | 12,060 | 1.0 % | 4.3 % |
| 194 | Luzerne County | Pennsylvania | 331,379 | 1.8 % | 5.3 % |
| 195 | Lycoming County | Pennsylvania | 113,236 | -0.8 % | 4.7 % |
| 196 | Lyman County | South Dakota | 3,721 | 0.2 % | 2.3 % |
| 197 | Lynchburg city | Virginia | 80,301 | 1.6 % | 4.3 % |
| 198 | Lynn County | Texas | 5,952 | 6.5 % | 3.4 % |
| 199 | Lyon County | Nevada | 63,718 | 7.6 % | 4.8 % |
| 200 | Lyon County | Kansas | 32,520 | 1.1 % | 4.8 % |
| 201 | Lyon County | Minnesota | 25,577 | 0.2 % | 3.9 % |
| 202 | Lyon County | Iowa | 12,378 | 3.8 % | 2.6 % |
| 203 | Lyon County | Kentucky | 9,078 | 4.5 % | 5.0 % |