This is a one percent rise in Mercer County’s population, from 22,616 in 2020 to 22,850 in 2021.
Mercer County had the 50th largest population in Kentucky 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.
Kentucky Counties By Population Change from 2020 to 2021
| County | 2020 Estimated Population | 2021 Estimated Population | % Change in Population From Year to Year |
|---|---|---|---|
| Robertson County | 2,184 | 2,257 | 3.3% |
| Garrard County | 16,935 | 17,362 | 2.5% |
| Nicholas County | 7,536 | 7,712 | 2.3% |
| Madison County | 92,920 | 94,666 | 1.9% |
| Spencer County | 19,564 | 19,916 | 1.8% |
| Warren County | 134,933 | 137,212 | 1.7% |
| Green County | 11,112 | 11,291 | 1.6% |
| Lyon County | 8,664 | 8,803 | 1.6% |
| Oldham County | 67,642 | 68,685 | 1.5% |
| Scott County | 57,477 | 58,252 | 1.3% |
| Edmonson County | 12,132 | 12,291 | 1.3% |
| Harrison County | 18,705 | 18,950 | 1.3% |
| Menifee County | 6,115 | 6,194 | 1.3% |
| Livingston County | 8,845 | 8,959 | 1.3% |
| Gallatin County | 8,667 | 8,775 | 1.2% |
| Lee County | 7,360 | 7,451 | 1.2% |
| Jessamine County | 52,972 | 53,626 | 1.2% |
| Calloway County | 37,147 | 37,560 | 1.1% |
| Breckinridge County | 20,432 | 20,651 | 1.1% |
| Larue County | 14,870 | 15,028 | 1.1% |
| Mercer County | 22,616 | 22,850 | 1% |
| Russell County | 17,975 | 18,156 | 1% |
| Logan County | 27,497 | 27,771 | 1% |
| Allen County | 20,595 | 20,797 | 1% |
| Hart County | 19,271 | 19,460 | 1% |
| Grant County | 25,008 | 25,244 | 0.9% |
| Trigg County | 14,068 | 14,192 | 0.9% |
| Fleming County | 15,091 | 15,224 | 0.9% |
| Taylor County | 26,020 | 26,235 | 0.8% |
| Trimble County | 8,461 | 8,530 | 0.8% |
| Hardin County | 110,719 | 111,607 | 0.8% |
| Bullitt County | 82,293 | 82,918 | 0.8% |
| Metcalfe County | 10,271 | 10,349 | 0.8% |
| Marion County | 19,580 | 19,725 | 0.7% |
| Boone County | 136,403 | 137,412 | 0.7% |
| Morgan County | 13,719 | 13,820 | 0.7% |
| Nelson County | 46,756 | 47,098 | 0.7% |
| Anderson County | 23,869 | 24,035 | 0.7% |
| Whitley County | 36,687 | 36,939 | 0.7% |
| Woodford County | 26,892 | 27,075 | 0.7% |
| Elliott County | 7,334 | 7,381 | 0.6% |
| Pulaski County | 65,016 | 65,423 | 0.6% |
| Shelby County | 48,179 | 48,461 | 0.6% |
| Bracken County | 8,390 | 8,439 | 0.6% |
| Bath County | 12,708 | 12,778 | 0.6% |
| Clinton County | 9,216 | 9,265 | 0.5% |
| Rowan County | 24,732 | 24,861 | 0.5% |
| Meade County | 29,981 | 30,131 | 0.5% |
| Simpson County | 19,620 | 19,718 | 0.5% |
| Montgomery County | 28,091 | 28,219 | 0.5% |
| Grayson County | 26,410 | 26,524 | 0.4% |
| Washington County | 12,024 | 12,072 | 0.4% |
| Cumberland County | 5,856 | 5,879 | 0.4% |
| Rockcastle County | 16,053 | 16,115 | 0.4% |
| Powell County | 13,085 | 13,133 | 0.4% |
| Adair County | 18,870 | 18,932 | 0.3% |
| Graves County | 36,512 | 36,615 | 0.3% |
| Carroll County | 10,833 | 10,863 | 0.3% |
| Marshall County | 31,665 | 31,748 | 0.3% |
| Jackson County | 12,951 | 12,984 | 0.3% |
| McCreary County | 16,851 | 16,892 | 0.2% |
| Barren County | 44,445 | 44,544 | 0.2% |
| Franklin County | 51,569 | 51,682 | 0.2% |
| Kenton County | 169,183 | 169,495 | 0.2% |
| Fulton County | 6,501 | 6,512 | 0.2% |
| Boyle County | 30,701 | 30,747 | 0.1% |
| Wayne County | 19,528 | 19,540 | 0.1% |
| Todd County | 12,280 | 12,285 | 0% |
| Lincoln County | 24,238 | 24,243 | 0% |
| Lawrence County | 16,288 | 16,290 | 0% |
| Owen County | 11,294 | 11,294 | 0% |
| Campbell County | 93,086 | 93,050 | 0% |
| Henry County | 15,666 | 15,657 | -0.1% |
| Caldwell County | 12,632 | 12,624 | -0.1% |
| Casey County | 15,886 | 15,866 | -0.1% |
| McLean County | 9,114 | 9,100 | -0.2% |
| Ohio County | 23,726 | 23,688 | -0.2% |
| Laurel County | 62,662 | 62,561 | -0.2% |
| Butler County | 12,318 | 12,294 | -0.2% |
| Daviess County | 103,291 | 103,063 | -0.2% |
| Pendleton County | 14,640 | 14,607 | -0.2% |
| Bourbon County | 20,285 | 20,229 | -0.3% |
| Estill County | 14,134 | 14,092 | -0.3% |
| Hancock County | 9,092 | 9,064 | -0.3% |
| Johnson County | 22,634 | 22,556 | -0.3% |
| Clark County | 36,999 | 36,871 | -0.3% |
| Bell County | 23,942 | 23,858 | -0.4% |
| Ballard County | 7,724 | 7,695 | -0.4% |
| Carlisle County | 4,811 | 4,791 | -0.4% |
| Crittenden County | 8,985 | 8,947 | -0.4% |
| Clay County | 20,294 | 20,206 | -0.4% |
| Christian County | 72,696 | 72,357 | -0.5% |
| Hopkins County | 45,367 | 45,138 | -0.5% |
| Jefferson County | 782,123 | 777,874 | -0.5% |
| McCracken County | 67,836 | 67,454 | -0.6% |
| Greenup County | 35,852 | 35,649 | -0.6% |
| Lewis County | 13,061 | 12,987 | -0.6% |
| Boyd County | 48,175 | 47,899 | -0.6% |
| Muhlenberg County | 30,875 | 30,694 | -0.6% |
| Monroe County | 11,301 | 11,233 | -0.6% |
| Carter County | 26,575 | 26,412 | -0.6% |
| Wolfe County | 6,552 | 6,507 | -0.7% |
| Henderson County | 44,645 | 44,329 | -0.7% |
| Union County | 13,646 | 13,544 | -0.7% |
| Knox County | 30,135 | 29,909 | -0.7% |
| Knott County | 14,160 | 14,053 | -0.8% |
| Martin County | 11,228 | 11,140 | -0.8% |
| Letcher County | 21,428 | 21,253 | -0.8% |
| Magoffin County | 11,594 | 11,497 | -0.8% |
| Mason County | 17,085 | 16,931 | -0.9% |
| Breathitt County | 13,679 | 13,553 | -0.9% |
| Floyd County | 35,756 | 35,274 | -1.3% |
| Webster County | 12,989 | 12,813 | -1.4% |
| Perry County | 28,378 | 27,929 | -1.6% |
| Owsley County | 4,018 | 3,953 | -1.6% |
| Leslie County | 10,455 | 10,278 | -1.7% |
| Pike County | 58,408 | 57,391 | -1.7% |
| Harlan County | 26,689 | 26,164 | -2% |
| Hickman County | 4,521 | 4,424 | -2.1% |
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