| County | Rank | Change (2020) ↓ | 2026 Pop. | 2020 Pop. |
|---|---|---|---|---|
| Benton County | 1 | 19.72% | 343,107 | 286,597 |
| Madison County | 2 | 13.31% | 18,758 | 16,555 |
| Washington County | 3 | 11.47% | 275,056 | 246,756 |
| Faulkner County | 4 | 9.66% | 135,791 | 123,830 |
| Saline County | 5 | 8.86% | 134,807 | 123,830 |
| Izard County | 6 | 6.67% | 14,511 | 13,604 |
| White County | 7 | 5.45% | 81,042 | 76,854 |
| Craighead County | 8 | 5.3% | 117,536 | 111,624 |
| Grant County | 9 | 4.99% | 18,915 | 18,016 |
| Crawford County | 10 | 4.81% | 63,058 | 60,164 |
| Sharp County | 11 | 4.79% | 18,142 | 17,313 |
| Marion County | 12 | 4.41% | 17,611 | 16,867 |
| Greene County | 13 | 4.25% | 47,802 | 45,855 |
| Carroll County | 14 | 4.22% | 29,437 | 28,245 |
| Franklin County | 15 | 4.19% | 17,848 | 17,131 |
| Cleburne County | 16 | 4.01% | 25,703 | 24,712 |
| Lonoke County | 17 | 3.88% | 76,938 | 74,065 |
| Boone County | 18 | 3.58% | 38,725 | 37,386 |
| Perry County | 19 | 3.51% | 10,347 | 9,996 |
| Baxter County | 20 | 3.39% | 43,105 | 41,692 |
| Conway County | 21 | 3.21% | 21,398 | 20,733 |
| Fulton County | 22 | 3.14% | 12,430 | 12,052 |
| Logan County | 23 | 2.97% | 21,735 | 21,108 |
| Pope County | 24 | 2.95% | 65,286 | 63,414 |
| Van Buren County | 25 | 2.82% | 16,249 | 15,803 |
| Independence County | 26 | 2.79% | 39,001 | 37,941 |
| Stone County | 27 | 2.63% | 12,675 | 12,350 |
| Sebastian County | 28 | 2.47% | 130,959 | 127,807 |
| Scott County | 29 | 2.4% | 10,064 | 9,828 |
| Johnson County | 30 | 1.87% | 26,203 | 25,721 |
| Polk County | 31 | 1.83% | 19,537 | 19,186 |
| Pulaski County | 32 | 1.65% | 405,828 | 399,252 |
| Hot Spring County | 33 | 1.58% | 33,608 | 33,086 |
| Montgomery County | 34 | 1.43% | 8,603 | 8,482 |
| Randolph County | 35 | 1.16% | 18,808 | 18,593 |
| Lawrence County | 36 | 0.77% | 16,346 | 16,221 |
| Jackson County | 37 | 0.61% | 16,844 | 16,742 |
| Searcy County | 38 | 0.09% | 7,852 | 7,845 |
| Miller County | 39 | -0.54% | 42,354 | 42,586 |
| Sevier County | 40 | -0.69% | 15,669 | 15,778 |
| Garland County | 41 | -0.78% | 99,480 | 100,259 |
| Drew County | 42 | -1.16% | 17,120 | 17,321 |
| Little River County | 43 | -1.26% | 11,827 | 11,978 |
| Poinsett County | 44 | -1.33% | 22,648 | 22,953 |
| Lincoln County | 45 | -1.76% | 12,666 | 12,893 |
| Yell County | 46 | -2.02% | 19,809 | 20,218 |
| Clark County | 47 | -2.24% | 20,924 | 21,404 |
| Newton County | 48 | -2.54% | 7,010 | 7,193 |
| Pike County | 49 | -2.81% | 9,873 | 10,158 |
| Calhoun County | 50 | -3.19% | 4,587 | 4,738 |
| Clay County | 51 | -3.5% | 14,026 | 14,535 |
| Columbia County | 52 | -4.28% | 21,774 | 22,747 |
| Cross County | 53 | -4.36% | 16,068 | 16,800 |
| Prairie County | 54 | -4.41% | 7,883 | 8,247 |
| Ouachita County | 55 | -4.48% | 21,606 | 22,620 |
| Howard County | 56 | -5.05% | 12,116 | 12,760 |
| Crittenden County | 57 | -5.09% | 45,631 | 48,076 |
| Nevada County | 58 | -5.14% | 7,858 | 8,284 |
| Hempstead County | 59 | -5.44% | 18,906 | 19,993 |
| Union County | 60 | -5.68% | 36,731 | 38,942 |
| St. Francis County | 61 | -5.9% | 21,661 | 23,019 |
| Cleveland County | 62 | -6.33% | 7,073 | 7,551 |
| Jefferson County | 63 | -6.67% | 62,369 | 66,825 |
| Ashley County | 64 | -6.97% | 17,638 | 18,959 |
| Mississippi County | 65 | -7.53% | 37,482 | 40,535 |
| Lee County | 66 | -7.71% | 7,920 | 8,582 |
| Bradley County | 67 | -8.02% | 9,659 | 10,501 |
| Dallas County | 68 | -8.2% | 5,913 | 6,441 |
| Arkansas County | 69 | -8.92% | 15,580 | 17,106 |
| Lafayette County | 70 | -9.12% | 5,720 | 6,294 |
| Woodruff County | 71 | -9.56% | 5,627 | 6,222 |
| Monroe County | 72 | -9.6% | 6,119 | 6,769 |
| Chicot County | 73 | -12.43% | 8,892 | 10,154 |
| Desha County | 74 | -14.63% | 9,663 | 11,319 |
| Phillips County | 75 | -14.82% | 13,955 | 16,383 |
Arkansas's counties show varied growth patterns from 2020 to 2026. Benton County leads with 3.04% annualized growth, followed by Madison County (2.1%) and Washington County (1.83%). The largest counties are Pulaski County (405,828), Benton County (343,107), and Washington County (275,056). Of the 75 counties in Arkansas, 38 are growing while 37 have experienced population decline. Overall, counties averaged -0.11% annualized growth, with total population growing by 0.65% annually.
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