| County | Rank | Change (2020) ↓ | 2025 Pop. | 2020 Pop. |
|---|---|---|---|---|
| Loudon County | 1 | 18.42% | 65,285 | 55,129 |
| Wilson County | 2 | 16.94% | 173,836 | 148,659 |
| Maury County | 3 | 14.2% | 116,288 | 101,826 |
| Meigs County | 4 | 13.66% | 14,557 | 12,808 |
| Marshall County | 5 | 13.62% | 39,169 | 34,475 |
| Montgomery County | 6 | 12.9% | 249,818 | 221,281 |
| Jackson County | 7 | 12.26% | 13,059 | 11,633 |
| Sequatchie County | 8 | 11.35% | 17,647 | 15,848 |
| Rutherford County | 9 | 10.67% | 379,939 | 343,298 |
| Macon County | 10 | 10.62% | 27,951 | 25,267 |
| Perry County | 11 | 10.52% | 9,263 | 8,381 |
| Fentress County | 12 | 10.17% | 20,418 | 18,533 |
| Sumner County | 13 | 9.69% | 216,540 | 197,416 |
| Cumberland County | 14 | 9.67% | 67,316 | 61,379 |
| Bedford County | 15 | 9.63% | 55,237 | 50,385 |
| Jefferson County | 16 | 9.61% | 60,194 | 54,916 |
| White County | 17 | 9.59% | 30,076 | 27,444 |
| Fayette County | 18 | 9.5% | 45,849 | 41,870 |
| Robertson County | 19 | 9.02% | 79,532 | 72,953 |
| Williamson County | 20 | 8.96% | 271,904 | 249,552 |
| Grainger County | 21 | 8.93% | 25,673 | 23,569 |
| Trousdale County | 22 | 8.8% | 12,659 | 11,635 |
| Monroe County | 23 | 8.68% | 50,422 | 46,394 |
| Roane County | 24 | 8.43% | 58,030 | 53,517 |
| Hancock County | 25 | 8.28% | 7,176 | 6,627 |
| Putnam County | 26 | 8.14% | 86,592 | 80,071 |
| McMinn County | 27 | 8.06% | 57,644 | 53,343 |
| Dickson County | 28 | 7.89% | 58,733 | 54,440 |
| DeKalb County | 29 | 7.34% | 21,671 | 20,189 |
| Washington County | 30 | 7.32% | 142,966 | 133,219 |
| Coffee County | 31 | 7.23% | 62,341 | 58,139 |
| Union County | 32 | 7.22% | 21,277 | 19,845 |
| Van Buren County | 33 | 7.21% | 6,619 | 6,174 |
| Lawrence County | 34 | 7.15% | 47,338 | 44,181 |
| Anderson County | 35 | 7.14% | 82,844 | 77,320 |
| Stewart County | 36 | 7.09% | 14,678 | 13,706 |
| Warren County | 37 | 6.97% | 43,912 | 41,052 |
| Cannon County | 38 | 6.93% | 15,575 | 14,565 |
| Cocke County | 39 | 6.85% | 38,514 | 36,045 |
| Greene County | 40 | 6.83% | 75,147 | 70,344 |
| Franklin County | 41 | 6.72% | 45,724 | 42,845 |
| Blount County | 42 | 6.7% | 144,748 | 135,657 |
| Knox County | 43 | 6.4% | 511,247 | 480,516 |
| Hamilton County | 44 | 6.3% | 390,388 | 367,251 |
| Overton County | 45 | 6.22% | 23,995 | 22,590 |
| Hickman County | 46 | 6.18% | 26,516 | 24,972 |
| Lewis County | 47 | 6.09% | 13,374 | 12,606 |
| Morgan County | 48 | 6% | 22,305 | 21,042 |
| Hamblen County | 49 | 5.84% | 68,314 | 64,542 |
| Johnson County | 50 | 5.8% | 19,033 | 17,990 |
| Hawkins County | 51 | 5.77% | 59,994 | 56,721 |
| Campbell County | 52 | 5.7% | 41,541 | 39,301 |
| Grundy County | 53 | 5.64% | 14,307 | 13,543 |
| Polk County | 54 | 5.56% | 18,543 | 17,566 |
| Moore County | 55 | 5.29% | 6,812 | 6,470 |
| Cheatham County | 56 | 5.11% | 43,234 | 41,131 |
| Carroll County | 57 | 4.61% | 29,744 | 28,434 |
| Houston County | 58 | 4.54% | 8,685 | 8,308 |
| Bradley County | 59 | 4.44% | 113,659 | 108,828 |
| Rhea County | 60 | 4.42% | 34,394 | 32,938 |
| Marion County | 61 | 4.07% | 30,046 | 28,870 |
| Sullivan County | 62 | 4.07% | 164,681 | 158,246 |
| Bledsoe County | 63 | 3.85% | 15,532 | 14,956 |
| Decatur County | 64 | 3.82% | 11,870 | 11,433 |
| Claiborne County | 65 | 3.67% | 33,248 | 32,072 |
| Pickett County | 66 | 3.56% | 5,178 | 5,000 |
| Smith County | 67 | 3.52% | 20,674 | 19,971 |
| Lincoln County | 68 | 3.29% | 36,495 | 35,331 |
| Clay County | 69 | 3.19% | 7,830 | 7,588 |
| Humphreys County | 70 | 3.07% | 19,581 | 18,998 |
| Carter County | 71 | 3.06% | 58,096 | 56,371 |
| Benton County | 72 | 2.94% | 16,321 | 15,855 |
| Scott County | 73 | 2.92% | 22,515 | 21,876 |
| Hardin County | 74 | 2.81% | 27,557 | 26,804 |
| Tipton County | 75 | 2.79% | 62,745 | 61,042 |
| McNairy County | 76 | 2.5% | 26,503 | 25,857 |
| Giles County | 77 | 2.45% | 31,083 | 30,340 |
| Henry County | 78 | 2.33% | 32,898 | 32,149 |
| Crockett County | 79 | 2.26% | 14,222 | 13,908 |
| Sevier County | 80 | 2.1% | 100,633 | 98,562 |
| Gibson County | 81 | 2.06% | 51,483 | 50,444 |
| Henderson County | 82 | 2.06% | 28,396 | 27,824 |
| Chester County | 83 | 1.88% | 17,702 | 17,375 |
| Unicoi County | 84 | 1.12% | 18,086 | 17,886 |
| Hardeman County | 85 | 0.94% | 25,679 | 25,440 |
| Davidson County | 86 | 0.87% | 722,300 | 716,059 |
| Weakley County | 87 | 0.8% | 33,166 | 32,903 |
| Madison County | 88 | 0.41% | 99,235 | 98,832 |
| Dyer County | 89 | -0.28% | 36,614 | 36,716 |
| Obion County | 90 | -0.94% | 30,485 | 30,775 |
| Lauderdale County | 91 | -3.08% | 24,348 | 25,123 |
| Wayne County | 92 | -3.43% | 15,666 | 16,222 |
| Shelby County | 93 | -3.48% | 897,412 | 929,763 |
| Haywood County | 94 | -4.93% | 16,948 | 17,826 |
| Lake County | 95 | -13.64% | 6,041 | 6,995 |
Tennessee's counties show varied growth patterns from 2020 to 2025. Loudon County leads with 18.42% annualized growth, followed by Wilson County (16.94%) and Maury County (14.2%). The largest counties are Shelby County (897,412), Davidson County (722,300), and Knox County (511,247). Of the 95 counties in Tennessee, 88 are growing while just 7 have experienced population decline. Overall, counties averaged 5.68% annualized growth, with total population growing by 5.13% annually.