This is a 1.5 percent fall in Union County’s population, from 38,925 in 2020 to 38,340 in 2021.
Union County had the 19th largest population in Arkansas in 2021.
The US Census Bureau found more than 73 percent of counties in the US saw a natural decrease in population in 2021. This is up from a 55.5 percent increase in 2020.
The Midwest suffered the most sustained population decreases, with many counties along the US East Coast and through the Rocky Mountains seeing increases.
The US population continues to grow, though at a slower rate than before.
Arkansas Counties By Population Change from 2020 to 2021
| County | 2020 Estimated Population | 2021 Estimated Population | % Change in Population From Year to Year |
|---|---|---|---|
| Benton County | 286,353 | 293,692 | 2.6% |
| Madison County | 16,551 | 16,960 | 2.5% |
| Izard County | 13,576 | 13,911 | 2.5% |
| Sharp County | 17,282 | 17,622 | 2% |
| Montgomery County | 8,459 | 8,611 | 1.8% |
| Randolph County | 18,581 | 18,865 | 1.5% |
| Cleburne County | 24,665 | 25,015 | 1.4% |
| Washington County | 246,662 | 250,057 | 1.4% |
| Boone County | 37,352 | 37,830 | 1.3% |
| Saline County | 123,681 | 125,233 | 1.3% |
| Lincoln County | 12,879 | 13,037 | 1.2% |
| Baxter County | 41,655 | 42,144 | 1.2% |
| Faulkner County | 123,666 | 125,106 | 1.2% |
| Greene County | 45,818 | 46,317 | 1.1% |
| Lee County | 8,529 | 8,619 | 1.1% |
| Stone County | 12,364 | 12,481 | 0.9% |
| Fulton County | 12,033 | 12,145 | 0.9% |
| Lonoke County | 74,042 | 74,722 | 0.9% |
| Polk County | 19,182 | 19,353 | 0.9% |
| Carroll County | 28,202 | 28,435 | 0.8% |
| Pope County | 63,346 | 63,789 | 0.7% |
| Conway County | 20,729 | 20,873 | 0.7% |
| Marion County | 16,862 | 16,978 | 0.7% |
| Searcy County | 7,827 | 7,880 | 0.7% |
| Grant County | 17,975 | 18,090 | 0.6% |
| Johnson County | 25,692 | 25,845 | 0.6% |
| Lawrence County | 16,196 | 16,292 | 0.6% |
| Craighead County | 111,576 | 112,218 | 0.6% |
| Logan County | 21,097 | 21,215 | 0.6% |
| Sebastian County | 127,739 | 128,400 | 0.5% |
| White County | 76,810 | 77,207 | 0.5% |
| Crawford County | 60,107 | 60,378 | 0.5% |
| Jackson County | 16,737 | 16,811 | 0.4% |
| Hot Spring County | 33,034 | 33,148 | 0.3% |
| Calhoun County | 4,725 | 4,741 | 0.3% |
| Franklin County | 17,122 | 17,173 | 0.3% |
| Miller County | 42,570 | 42,649 | 0.2% |
| Garland County | 100,162 | 100,330 | 0.2% |
| Scott County | 9,811 | 9,822 | 0.1% |
| Newton County | 7,198 | 7,204 | 0.1% |
| Sevier County | 15,778 | 15,783 | 0% |
| Clark County | 21,362 | 21,321 | -0.2% |
| Little River County | 11,971 | 11,944 | -0.2% |
| Yell County | 20,216 | 20,155 | -0.3% |
| Columbia County | 22,741 | 22,672 | -0.3% |
| Pulaski County | 399,073 | 397,821 | -0.3% |
| Perry County | 9,997 | 9,964 | -0.3% |
| Cleveland County | 7,544 | 7,514 | -0.4% |
| Independence County | 37,892 | 37,723 | -0.4% |
| Howard County | 12,755 | 12,698 | -0.4% |
| Van Buren County | 15,765 | 15,694 | -0.5% |
| Cross County | 16,762 | 16,681 | -0.5% |
| Bradley County | 10,498 | 10,408 | -0.9% |
| Pike County | 10,165 | 10,066 | -1% |
| Poinsett County | 22,893 | 22,660 | -1% |
| Clay County | 14,508 | 14,350 | -1.1% |
| Crittenden County | 48,067 | 47,525 | -1.1% |
| Drew County | 17,309 | 17,110 | -1.1% |
| Nevada County | 8,284 | 8,187 | -1.2% |
| Monroe County | 6,765 | 6,683 | -1.2% |
| Chicot County | 10,143 | 10,019 | -1.2% |
| Ouachita County | 22,592 | 22,306 | -1.3% |
| St. Francis County | 23,046 | 22,739 | -1.3% |
| Woodruff County | 6,200 | 6,116 | -1.4% |
| Prairie County | 8,248 | 8,135 | -1.4% |
| Jefferson County | 66,811 | 65,861 | -1.4% |
| Hempstead County | 19,993 | 19,694 | -1.5% |
| Union County | 38,925 | 38,340 | -1.5% |
| Ashley County | 18,960 | 18,674 | -1.5% |
| Mississippi County | 40,503 | 39,661 | -2.1% |
| Lafayette County | 6,294 | 6,163 | -2.1% |
| Desha County | 11,330 | 11,090 | -2.1% |
| Dallas County | 6,445 | 6,308 | -2.1% |
| Arkansas County | 17,105 | 16,722 | -2.2% |
| Phillips County | 16,445 | 15,906 | -3.3% |
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