| County | Rank | Change (2020) ↓ | 2025 Pop. | 2020 Pop. |
|---|---|---|---|---|
| Benton County | 1 | 15.44% | 330,884 | 286,621 |
| Washington County | 2 | 9.61% | 270,488 | 246,779 |
| Madison County | 3 | 8.47% | 17,963 | 16,560 |
| Faulkner County | 4 | 7.67% | 133,313 | 123,820 |
| Saline County | 5 | 7.36% | 132,938 | 123,820 |
| Sharp County | 6 | 5.72% | 18,306 | 17,315 |
| Izard County | 7 | 5.7% | 14,380 | 13,604 |
| Craighead County | 8 | 5.23% | 117,459 | 111,623 |
| Fulton County | 9 | 5.14% | 12,670 | 12,051 |
| Marion County | 10 | 4.94% | 17,701 | 16,867 |
| Conway County | 11 | 4.78% | 21,726 | 20,734 |
| Cleburne County | 12 | 4.45% | 25,816 | 24,716 |
| Stone County | 13 | 4.42% | 12,893 | 12,347 |
| Crawford County | 14 | 4.23% | 62,706 | 60,160 |
| Grant County | 15 | 3.78% | 18,700 | 18,019 |
| Lonoke County | 16 | 3.76% | 76,854 | 74,072 |
| Baxter County | 17 | 3.69% | 43,233 | 41,696 |
| Boone County | 18 | 3.65% | 38,756 | 37,393 |
| White County | 19 | 3.64% | 79,659 | 76,863 |
| Carroll County | 20 | 3.39% | 29,198 | 28,241 |
| Franklin County | 21 | 3.27% | 17,701 | 17,141 |
| Perry County | 22 | 3.11% | 10,314 | 10,003 |
| Randolph County | 23 | 3.08% | 19,167 | 18,595 |
| Greene County | 24 | 2.82% | 47,156 | 45,861 |
| Pope County | 25 | 2.5% | 64,995 | 63,407 |
| Sebastian County | 26 | 2.39% | 130,867 | 127,813 |
| Van Buren County | 27 | 2.25% | 16,152 | 15,797 |
| Logan County | 28 | 2.11% | 21,554 | 21,109 |
| Johnson County | 29 | 1.77% | 26,183 | 25,727 |
| Independence County | 30 | 1.1% | 38,361 | 37,945 |
| Lawrence County | 31 | 1.04% | 16,385 | 16,216 |
| Polk County | 32 | 1% | 19,378 | 19,186 |
| Hot Spring County | 33 | 0.88% | 33,367 | 33,076 |
| Pulaski County | 34 | 0.61% | 401,714 | 399,286 |
| Sevier County | 35 | 0.22% | 15,816 | 15,782 |
| Searcy County | 36 | 0.13% | 7,854 | 7,844 |
| Scott County | 37 | 0.09% | 9,838 | 9,829 |
| Yell County | 38 | -0.06% | 20,205 | 20,217 |
| Garland County | 39 | -0.22% | 100,045 | 100,266 |
| Lincoln County | 40 | -0.42% | 12,836 | 12,890 |
| Calhoun County | 41 | -0.42% | 4,716 | 4,736 |
| Montgomery County | 42 | -0.81% | 8,415 | 8,484 |
| Jackson County | 43 | -0.97% | 16,597 | 16,759 |
| Clark County | 44 | -2.25% | 20,922 | 21,403 |
| Miller County | 45 | -2.28% | 41,614 | 42,586 |
| Drew County | 46 | -2.49% | 16,884 | 17,315 |
| Pike County | 47 | -2.62% | 9,890 | 10,156 |
| Cleveland County | 48 | -2.73% | 7,348 | 7,554 |
| Newton County | 49 | -3.1% | 6,973 | 7,196 |
| Poinsett County | 50 | -3.17% | 22,227 | 22,955 |
| Clay County | 51 | -3.45% | 14,033 | 14,534 |
| Howard County | 52 | -3.79% | 12,274 | 12,758 |
| Columbia County | 53 | -3.9% | 21,855 | 22,743 |
| Little River County | 54 | -4.05% | 11,486 | 11,971 |
| Crittenden County | 55 | -4.15% | 46,095 | 48,090 |
| Jefferson County | 56 | -4.53% | 63,805 | 66,835 |
| Ouachita County | 57 | -4.61% | 21,575 | 22,617 |
| Prairie County | 58 | -4.72% | 7,858 | 8,247 |
| Nevada County | 59 | -4.89% | 7,882 | 8,287 |
| Cross County | 60 | -5.15% | 15,935 | 16,801 |
| Hempstead County | 61 | -5.49% | 18,889 | 19,986 |
| Lafayette County | 62 | -5.51% | 5,948 | 6,295 |
| Union County | 63 | -5.99% | 36,607 | 38,940 |
| St. Francis County | 64 | -6.26% | 21,578 | 23,019 |
| Lee County | 65 | -6.37% | 7,987 | 8,530 |
| Ashley County | 66 | -6.47% | 17,736 | 18,963 |
| Bradley County | 67 | -6.97% | 9,761 | 10,492 |
| Monroe County | 68 | -7.1% | 6,290 | 6,771 |
| Mississippi County | 69 | -7.37% | 37,555 | 40,545 |
| Dallas County | 70 | -7.39% | 5,965 | 6,441 |
| Arkansas County | 71 | -7.59% | 15,805 | 17,104 |
| Woodruff County | 72 | -8.74% | 5,677 | 6,221 |
| Desha County | 73 | -10.22% | 10,164 | 11,321 |
| Chicot County | 74 | -11.04% | 9,037 | 10,159 |
| Phillips County | 75 | -12.83% | 14,331 | 16,441 |
Arkansas's counties show varied growth patterns from 2020 to 2025. Benton County leads with 15.44% annualized growth, followed by Washington County (9.61%) and Madison County (8.47%). The largest counties are Pulaski County (401,714), Benton County (330,884), and Washington County (270,488). Of the 75 counties in Arkansas, 37 are growing while 38 have experienced population decline. Overall, counties averaged -0.49% annualized growth, with total population growing by 3.08% annually.
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