Fastest-growing counties in the US
Compare annual population growth in US counties and county equivalents.
U.S. Census Bureau Population EstimatesPeriod: July 1, 2024–July 1, 2025 · Vintage 2025Retrieved 2026-10-05T08:10:35+00:00
Percent change = (current July 1 population − previous July 1 population) / previous population × 100. Both estimates use the same Census vintage. Includes counties and county equivalents with at least 20,000 residents in the previous year. This is observed population change, not a forecast.
Ranks are competition ranks computed across the full filtered set.
| Rank | Name | State | Growth | Population |
|---|---|---|---|---|
| 801 | Maverick County | Texas | 0.4% | 58,823 |
| 802 | Carroll County | New Hampshire | 0.4% | 52,784 |
| 803 | Camden County | New Jersey | 0.4% | 535,799 |
| 804 | Pennington County | South Dakota | 0.4% | 116,792 |
| 805 | Marion County | Missouri | 0.4% | 28,525 |
| 806 | Howard County | Maryland | 0.4% | 339,183 |
| 807 | Northampton County | Pennsylvania | 0.4% | 324,411 |
| 808 | Rusk County | Texas | 0.4% | 54,854 |
| 809 | Adams County | Pennsylvania | 0.4% | 107,594 |
| 810 | St. Mary's County | Maryland | 0.4% | 116,692 |
| 811 | Hockley County | Texas | 0.4% | 21,600 |
| 812 | Madison County | Idaho | 0.4% | 55,172 |
| 813 | Lea County | New Mexico | 0.4% | 74,749 |
| 814 | Medina County | Ohio | 0.4% | 185,025 |
| 815 | Walla Walla County | Washington | 0.4% | 62,361 |
| 816 | Calumet County | Wisconsin | 0.4% | 53,982 |
| 817 | Cocke County | Tennessee | 0.4% | 37,889 |
| 818 | Naugatuck Valley Planning Region | Connecticut | 0.4% | 463,349 |
| 819 | Baldwin County | Georgia | 0.4% | 44,029 |
| 820 | Gallia County | Ohio | 0.4% | 29,072 |
| 821 | Plymouth County | Massachusetts | 0.4% | 546,829 |
| 822 | Warren County | Tennessee | 0.4% | 43,717 |
| 823 | Etowah County | Alabama | 0.4% | 103,886 |
| 824 | San Mateo County | California | 0.4% | 743,568 |
| 825 | Geauga County | Ohio | 0.4% | 95,676 |
| 826 | Crawford County | Missouri | 0.4% | 22,929 |
| 827 | Lowndes County | Georgia | 0.4% | 122,867 |
| 828 | Clinton County | New York | 0.4% | 78,138 |
| 829 | Anderson County | Texas | 0.4% | 59,805 |
| 830 | Eau Claire County | Wisconsin | 0.4% | 109,033 |
| 831 | Carbon County | Utah | 0.4% | 20,680 |
| 832 | Greater Bridgeport Planning Region | Connecticut | 0.4% | 337,697 |
| 833 | Catoosa County | Georgia | 0.4% | 69,628 |
| 834 | Jones County | Iowa | 0.4% | 21,253 |
| 835 | Madison County | North Carolina | 0.4% | 22,553 |
| 836 | Berks County | Pennsylvania | 0.4% | 440,072 |
| 837 | Grady County | Georgia | 0.4% | 26,590 |
| 838 | Morgan County | Tennessee | 0.4% | 22,160 |
| 839 | Somerset County | New Jersey | 0.4% | 356,486 |
| 840 | Cowley County | Kansas | 0.4% | 34,382 |
| 841 | Muskegon County | Michigan | 0.4% | 177,901 |
| 842 | Cheatham County | Tennessee | 0.4% | 42,778 |
| 843 | Champaign County | Illinois | 0.4% | 209,972 |
| 844 | McNairy County | Tennessee | 0.4% | 26,236 |
| 845 | Dinwiddie County | Virginia | 0.4% | 28,896 |
| 846 | Bandera County | Texas | 0.4% | 22,876 |
| 847 | Lehigh County | Pennsylvania | 0.4% | 384,383 |
| 848 | Washington County | Maryland | 0.4% | 157,731 |
| 849 | Lincoln County | Tennessee | 0.4% | 36,853 |
| 850 | Ogemaw County | Michigan | 0.4% | 21,121 |
1830 ranked entries.