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 |
|---|---|---|---|---|
| 1 | Jasper County | South Carolina | 6.0% | 38,533 |
| 2 | Waller County | Texas | 5.7% | 69,858 |
| 3 | Kaufman County | Texas | 5.7% | 209,235 |
| 4 | Jackson County | Georgia | 5.3% | 99,265 |
| 5 | Long County | Georgia | 5.2% | 21,557 |
| 6 | Brunswick County | North Carolina | 4.7% | 174,702 |
| 7 | Pinal County | Arizona | 4.6% | 539,380 |
| 8 | Liberty County | Texas | 4.4% | 121,364 |
| 9 | Dawson County | Georgia | 4.2% | 35,365 |
| 10 | Caldwell County | Texas | 4.2% | 55,150 |
| 11 | Elbert County | Colorado | 4.1% | 30,534 |
| 12 | Montgomery County | Texas | 4.0% | 781,194 |
| 13 | St. Johns County | Florida | 3.9% | 346,328 |
| 14 | Comal County | Texas | 3.8% | 209,166 |
| 15 | Banks County | Georgia | 3.7% | 21,273 |
| 16 | Ellis County | Texas | 3.6% | 240,867 |
| 17 | Walton County | Florida | 3.5% | 93,288 |
| 18 | Hendry County | Florida | 3.5% | 48,276 |
| 19 | Hunt County | Texas | 3.5% | 123,336 |
| 20 | Marion County | Florida | 3.4% | 442,660 |
| 21 | Collin County | Texas | 3.4% | 1,297,179 |
| 22 | Hays County | Texas | 3.4% | 304,390 |
| 23 | Osceola County | Florida | 3.4% | 481,718 |
| 24 | Benton County | Arkansas | 3.3% | 332,554 |
| 25 | Goochland County | Virginia | 3.3% | 29,187 |
| 26 | Williamson County | Texas | 3.3% | 752,827 |
| 27 | Berkeley County | South Carolina | 3.3% | 274,666 |
| 28 | Limestone County | Alabama | 3.3% | 122,928 |
| 29 | Maury County | Tennessee | 3.2% | 118,131 |
| 30 | Horry County | South Carolina | 3.2% | 427,551 |
| 31 | Dallas County | Iowa | 3.2% | 118,457 |
| 32 | Tooele County | Utah | 3.1% | 87,461 |
| 33 | Wise County | Texas | 3.1% | 83,778 |
| 34 | Canadian County | Oklahoma | 3.1% | 187,189 |
| 35 | Johnson County | Texas | 3.1% | 218,048 |
| 36 | New Kent County | Virginia | 3.0% | 28,022 |
| 37 | Flagler County | Florida | 3.0% | 140,360 |
| 38 | Jefferson County | West Virginia | 3.0% | 63,102 |
| 39 | Spartanburg County | South Carolina | 3.0% | 380,857 |
| 40 | Gaines County | Texas | 2.9% | 23,956 |
| 41 | Barrow County | Georgia | 2.9% | 99,773 |
| 42 | Canyon County | Idaho | 2.9% | 275,123 |
| 43 | Chambers County | Texas | 2.9% | 57,594 |
| 44 | Lake County | Florida | 2.8% | 456,068 |
| 45 | Parker County | Texas | 2.8% | 184,767 |
| 46 | Fairfax city | Virginia | 2.8% | 26,772 |
| 47 | Rockwall County | Texas | 2.8% | 140,738 |
| 48 | Pender County | North Carolina | 2.8% | 72,111 |
| 49 | Pasco County | Florida | 2.8% | 674,516 |
| 50 | Guadalupe County | Texas | 2.8% | 201,111 |
1830 ranked entries.