| County | Rank | Change (2020) ↓ | 2025 Pop. | 2020 Pop. |
|---|---|---|---|---|
| Wilson County | 1 | 18.09% | 175,544 | 148,651 |
| Loudon County | 2 | 15.49% | 63,677 | 55,136 |
| Maury County | 3 | 14% | 116,088 | 101,836 |
| Sequatchie County | 4 | 13.91% | 18,051 | 15,847 |
| Montgomery County | 5 | 13.71% | 251,652 | 221,309 |
| Marshall County | 6 | 12.22% | 38,686 | 34,472 |
| Rutherford County | 7 | 11.95% | 384,343 | 343,302 |
| Fentress County | 8 | 10.88% | 20,550 | 18,534 |
| Meigs County | 9 | 10.8% | 14,192 | 12,809 |
| Jefferson County | 10 | 10.23% | 60,537 | 54,917 |
| Van Buren County | 11 | 10.06% | 6,796 | 6,175 |
| Robertson County | 12 | 9.78% | 80,098 | 72,962 |
| DeKalb County | 13 | 9.74% | 22,157 | 20,191 |
| Bedford County | 14 | 9.5% | 55,182 | 50,396 |
| Williamson County | 15 | 9.35% | 272,960 | 249,616 |
| Macon County | 16 | 8.99% | 27,541 | 25,269 |
| Sumner County | 17 | 8.91% | 215,019 | 197,420 |
| Lewis County | 18 | 8.59% | 13,690 | 12,607 |
| Warren County | 19 | 8.58% | 44,583 | 41,059 |
| McMinn County | 20 | 8.33% | 57,788 | 53,344 |
| Cumberland County | 21 | 8.17% | 66,388 | 61,372 |
| Bledsoe County | 22 | 8.15% | 16,174 | 14,955 |
| Perry County | 23 | 8.07% | 9,063 | 8,386 |
| Grainger County | 24 | 7.98% | 25,449 | 23,569 |
| Union County | 25 | 7.74% | 21,381 | 19,845 |
| White County | 26 | 7.55% | 29,519 | 27,446 |
| Hancock County | 27 | 7.35% | 7,113 | 6,626 |
| Dickson County | 28 | 7.33% | 58,447 | 54,453 |
| Putnam County | 29 | 7.19% | 85,836 | 80,078 |
| Monroe County | 30 | 7.18% | 49,730 | 46,399 |
| Fayette County | 31 | 7.18% | 44,870 | 41,865 |
| Hamblen County | 32 | 6.85% | 68,964 | 64,542 |
| Coffee County | 33 | 6.8% | 62,098 | 58,145 |
| Anderson County | 34 | 6.76% | 82,555 | 77,327 |
| Roane County | 35 | 6.7% | 57,261 | 53,664 |
| Jackson County | 36 | 6.68% | 12,408 | 11,631 |
| Knox County | 37 | 6.53% | 511,920 | 480,530 |
| Franklin County | 38 | 6.49% | 45,592 | 42,812 |
| Morgan County | 39 | 6.44% | 22,405 | 21,050 |
| Hamilton County | 40 | 6.35% | 391,240 | 367,891 |
| Lawrence County | 41 | 6.16% | 46,901 | 44,179 |
| Bradley County | 42 | 6.07% | 115,432 | 108,831 |
| Hawkins County | 43 | 6.02% | 60,134 | 56,721 |
| Polk County | 44 | 5.94% | 18,610 | 17,567 |
| Clay County | 45 | 5.9% | 8,042 | 7,594 |
| Rhea County | 46 | 5.74% | 35,199 | 33,287 |
| Stewart County | 47 | 5.65% | 14,484 | 13,709 |
| Grundy County | 48 | 5.58% | 14,304 | 13,548 |
| Washington County | 49 | 5.58% | 140,656 | 133,225 |
| Lincoln County | 50 | 5.58% | 37,309 | 35,338 |
| Greene County | 51 | 5.55% | 74,250 | 70,348 |
| Blount County | 52 | 5.44% | 143,038 | 135,656 |
| Smith County | 53 | 5.28% | 21,021 | 19,966 |
| Cocke County | 54 | 5.21% | 37,920 | 36,043 |
| Overton County | 55 | 5.12% | 23,744 | 22,587 |
| Moore County | 56 | 4.73% | 6,772 | 6,466 |
| Cannon County | 57 | 4.62% | 15,233 | 14,561 |
| Cheatham County | 58 | 4.55% | 42,961 | 41,090 |
| Houston County | 59 | 4.49% | 8,678 | 8,305 |
| Marion County | 60 | 4.46% | 30,194 | 28,905 |
| Humphreys County | 61 | 4.31% | 19,815 | 18,996 |
| Scott County | 62 | 4.17% | 22,789 | 21,876 |
| Claiborne County | 63 | 4.17% | 33,402 | 32,066 |
| Decatur County | 64 | 4.01% | 11,891 | 11,433 |
| Hickman County | 65 | 3.84% | 25,930 | 24,970 |
| Chester County | 66 | 3.71% | 18,030 | 17,385 |
| Henry County | 67 | 3.63% | 33,312 | 32,146 |
| Johnson County | 68 | 3.57% | 18,636 | 17,994 |
| Davidson County | 69 | 3.33% | 739,918 | 716,095 |
| Trousdale County | 70 | 3.29% | 12,017 | 11,634 |
| Sullivan County | 71 | 3.23% | 163,352 | 158,244 |
| Hardin County | 72 | 3.07% | 27,785 | 26,958 |
| Carroll County | 73 | 2.94% | 29,264 | 28,428 |
| Madison County | 74 | 2.62% | 101,428 | 98,834 |
| Giles County | 75 | 2.58% | 31,127 | 30,344 |
| Gibson County | 76 | 2.47% | 51,692 | 50,447 |
| Carter County | 77 | 2.43% | 57,756 | 56,386 |
| Campbell County | 78 | 2.4% | 40,251 | 39,306 |
| Tipton County | 79 | 2.36% | 62,489 | 61,047 |
| Pickett County | 80 | 2.06% | 5,102 | 4,999 |
| Benton County | 81 | 2.06% | 16,179 | 15,853 |
| Henderson County | 82 | 1.69% | 28,301 | 27,831 |
| Sevier County | 83 | 1.29% | 100,144 | 98,865 |
| McNairy County | 84 | 1.09% | 26,141 | 25,858 |
| Weakley County | 85 | 0.96% | 33,214 | 32,897 |
| Crockett County | 86 | 0.36% | 13,955 | 13,905 |
| Unicoi County | 87 | 0.33% | 17,932 | 17,873 |
| Hardeman County | 88 | -0.37% | 25,345 | 25,438 |
| Dyer County | 89 | -0.91% | 36,374 | 36,709 |
| Lauderdale County | 90 | -1.67% | 24,706 | 25,125 |
| Wayne County | 91 | -2% | 15,901 | 16,225 |
| Obion County | 92 | -2.13% | 30,119 | 30,775 |
| Shelby County | 93 | -2.43% | 907,151 | 929,788 |
| Haywood County | 94 | -5.29% | 16,882 | 17,825 |
| Lake County | 95 | -7.85% | 6,437 | 6,985 |
Tennessee's counties show varied growth patterns from 2020 to 2025. Wilson County leads with 18.09% annualized growth, followed by Loudon County (15.49%) and Maury County (14%). The largest counties are Shelby County (907,151), Davidson County (739,918), and Knox County (511,920). Of the 95 counties in Tennessee, 87 are growing while just 8 have experienced population decline. Overall, counties averaged 5.51% annualized growth, with total population growing by 5.47% annually.
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