| County | Rank | Change (2020) ↓ | 2025 Pop. | 2020 Pop. |
|---|---|---|---|---|
| Limestone County | 1 | 17.3% | 122,226 | 104,203 |
| Baldwin County | 2 | 14.68% | 267,459 | 233,227 |
| Madison County | 3 | 10.27% | 430,590 | 390,503 |
| St. Clair County | 4 | 7.9% | 98,894 | 91,657 |
| Lee County | 5 | 7.72% | 188,249 | 174,754 |
| Cullman County | 6 | 7.47% | 94,722 | 88,136 |
| Cleburne County | 7 | 7.36% | 16,173 | 15,064 |
| Henry County | 8 | 6.92% | 18,357 | 17,169 |
| Coffee County | 9 | 6.91% | 57,249 | 53,549 |
| Shelby County | 10 | 6.71% | 238,934 | 223,912 |
| Randolph County | 11 | 6.12% | 23,438 | 22,086 |
| Marshall County | 12 | 5.84% | 103,412 | 97,702 |
| Chilton County | 13 | 5.64% | 47,597 | 45,057 |
| Cherokee County | 14 | 5.3% | 26,292 | 24,969 |
| Lauderdale County | 15 | 4.96% | 98,692 | 94,025 |
| Elmore County | 16 | 4.85% | 92,123 | 87,861 |
| Hale County | 17 | 4.7% | 15,466 | 14,772 |
| Autauga County | 18 | 4.51% | 61,574 | 58,915 |
| Jackson County | 19 | 3.83% | 54,555 | 52,545 |
| Lawrence County | 20 | 3.15% | 34,132 | 33,089 |
| Colbert County | 21 | 3.13% | 59,097 | 57,304 |
| Tuscaloosa County | 22 | 3.11% | 238,739 | 231,547 |
| Covington County | 23 | 3.05% | 38,650 | 37,506 |
| Morgan County | 24 | 2.96% | 126,937 | 123,288 |
| Geneva County | 25 | 2.79% | 27,444 | 26,698 |
| Dale County | 26 | 2.77% | 50,623 | 49,257 |
| DeKalb County | 27 | 2.63% | 73,543 | 71,659 |
| Blount County | 28 | 2.21% | 60,416 | 59,107 |
| Houston County | 29 | 1.87% | 109,292 | 107,284 |
| Pike County | 30 | 1.5% | 33,395 | 32,900 |
| Calhoun County | 31 | 1.28% | 117,727 | 116,243 |
| Marion County | 32 | 0.66% | 29,368 | 29,176 |
| Etowah County | 33 | 0.45% | 103,917 | 103,453 |
| Talladega County | 34 | 0.4% | 81,900 | 81,575 |
| Crenshaw County | 35 | 0.33% | 13,207 | 13,163 |
| Walker County | 36 | 0.26% | 65,308 | 65,138 |
| Russell County | 37 | -0.36% | 59,044 | 59,258 |
| Mobile County | 38 | -0.54% | 412,124 | 414,377 |
| Winston County | 39 | -0.6% | 23,351 | 23,493 |
| Escambia County | 40 | -0.77% | 36,402 | 36,685 |
| Coosa County | 41 | -1.4% | 10,190 | 10,335 |
| Franklin County | 42 | -1.53% | 31,586 | 32,078 |
| Clay County | 43 | -1.72% | 13,967 | 14,212 |
| Pickens County | 44 | -2.12% | 18,566 | 18,969 |
| Chambers County | 45 | -2.14% | 33,909 | 34,651 |
| Jefferson County | 46 | -2.4% | 658,517 | 674,717 |
| Barbour County | 47 | -2.46% | 24,355 | 24,969 |
| Bibb County | 48 | -2.51% | 21,632 | 22,188 |
| Tallapoosa County | 49 | -2.61% | 40,205 | 41,284 |
| Montgomery County | 50 | -2.63% | 222,338 | 228,342 |
| Lamar County | 51 | -2.74% | 13,571 | 13,953 |
| Washington County | 52 | -2.94% | 14,878 | 15,329 |
| Fayette County | 53 | -3.64% | 15,737 | 16,331 |
| Marengo County | 54 | -4.15% | 18,470 | 19,270 |
| Conecuh County | 55 | -4.15% | 11,074 | 11,554 |
| Monroe County | 56 | -4.28% | 18,863 | 19,706 |
| Clarke County | 57 | -4.89% | 21,863 | 22,987 |
| Choctaw County | 58 | -5.8% | 11,894 | 12,626 |
| Butler County | 59 | -6.39% | 17,810 | 19,025 |
| Sumter County | 60 | -6.46% | 11,403 | 12,191 |
| Lowndes County | 61 | -6.81% | 9,585 | 10,285 |
| Macon County | 62 | -7.29% | 18,046 | 19,464 |
| Greene County | 63 | -7.55% | 7,119 | 7,700 |
| Bullock County | 64 | -8.06% | 9,405 | 10,229 |
| Dallas County | 65 | -8.21% | 35,037 | 38,171 |
| Wilcox County | 66 | -9.3% | 9,554 | 10,534 |
| Perry County | 67 | -12.44% | 7,406 | 8,458 |
Alabama's counties show varied growth patterns from 2020 to 2025. Limestone County leads with 17.3% annualized growth, followed by Baldwin County (14.68%) and Madison County (10.27%). The largest counties are Jefferson County (658,517), Madison County (430,590), and Mobile County (412,124). Of the 67 counties in Alabama, 36 are growing while 31 have experienced population decline. Overall, counties averaged 0.64% annualized growth, with total population growing by 2.9% annually.