Largest counties by population
Rank US counties and county equivalents by resident population, not land area.
U.S. Census Bureau Population EstimatesPeriod: July 1, 2024–July 1, 2025 · Vintage 2025Retrieved 2026-10-05T08:10:35+00:00
July 1 resident population estimates from a single Census vintage. Counties are ranked by population, not land area. County equivalents include independent cities and other Census county-equivalent areas.
Ranks are competition ranks computed across the full filtered set.
| Rank | Name | State | Population | Growth |
|---|---|---|---|---|
| 1801 | Benton County | Missouri | 20,536 | 0.0% |
| 1802 | Polk County | North Carolina | 20,533 | 0.7% |
| 1803 | Gilchrist County | Florida | 20,488 | 1.8% |
| 1804 | Mitchell County | Georgia | 20,467 | 0.6% |
| 1805 | Buena Vista County | Iowa | 20,449 | -1.0% |
| 1806 | Tyler County | Texas | 20,443 | -0.3% |
| 1807 | Fairfield County | South Carolina | 20,340 | -0.7% |
| 1808 | Texas County | Oklahoma | 20,322 | -0.6% |
| 1808 | Fentress County | Tennessee | 20,322 | 1.5% |
| 1810 | DeWitt County | Texas | 20,309 | -0.3% |
| 1811 | Carroll County | Iowa | 20,303 | -0.7% |
| 1812 | Boone County | West Virginia | 20,251 | -1.0% |
| 1813 | Bourbon County | Kentucky | 20,243 | -0.5% |
| 1814 | Nodaway County | Missouri | 20,174 | -0.6% |
| 1815 | Perry County | Illinois | 20,160 | -1.1% |
| 1816 | Gonzales County | Texas | 20,159 | 0.1% |
| 1817 | Holmes County | Florida | 20,119 | 0.0% |
| 1818 | Jay County | Indiana | 20,118 | -0.7% |
| 1818 | Taylor County | Wisconsin | 20,118 | 0.1% |
| 1820 | Hart County | Kentucky | 20,117 | 1.0% |
| 1821 | Marion County | Kentucky | 20,115 | 0.6% |
| 1822 | Fulton County | Indiana | 20,091 | 0.3% |
| 1823 | Elbert County | Georgia | 20,072 | -0.5% |
| 1824 | Davison County | South Dakota | 20,069 | 0.4% |
| 1825 | Spencer County | Indiana | 20,061 | -0.5% |
| 1826 | Worth County | Georgia | 20,059 | -0.6% |
| 1827 | Willacy County | Texas | 19,971 | -0.5% |
| 1828 | Yell County | Arkansas | 19,956 | -0.7% |
| 1829 | Letcher County | Kentucky | 19,952 | -1.3% |
| 1830 | Vernon County | Missouri | 19,946 | 0.8% |
| 1831 | Douglas County | Illinois | 19,880 | 0.2% |
| 1832 | Coahoma County | Mississippi | 19,849 | -1.0% |
| 1833 | Lincoln County | New Mexico | 19,844 | -1.0% |
| 1834 | Orange County | Indiana | 19,834 | 0.2% |
| 1835 | Adair County | Oklahoma | 19,828 | 0.6% |
| 1836 | Woodward County | Oklahoma | 19,827 | -0.4% |
| 1837 | Wayne County | Mississippi | 19,807 | 0.0% |
| 1838 | Wyoming County | West Virginia | 19,801 | -1.0% |
| 1839 | McIntosh County | Oklahoma | 19,758 | 0.2% |
| 1840 | Winneshiek County | Iowa | 19,733 | 0.3% |
| 1841 | Assumption Parish | Louisiana | 19,720 | -1.5% |
| 1842 | Westmoreland County | Virginia | 19,715 | 1.9% |
| 1843 | Labette County | Kansas | 19,685 | 0.0% |
| 1844 | Saluda County | South Carolina | 19,680 | 0.6% |
| 1845 | Wright County | Missouri | 19,671 | 0.7% |
| 1846 | Dodge County | Georgia | 19,663 | -0.2% |
| 1847 | Stone County | Mississippi | 19,654 | 1.0% |
| 1848 | Humphreys County | Tennessee | 19,646 | 0.5% |
| 1849 | Hutchinson County | Texas | 19,633 | -0.8% |
| 1850 | Harrison County | Kentucky | 19,627 | 0.8% |
3144 ranked entries.