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 |
|---|---|---|---|---|
| 1551 | Bristol County | Rhode Island | -0.3% | 50,001 |
| 1552 | Lycoming County | Pennsylvania | -0.3% | 112,587 |
| 1553 | Knox County | Indiana | -0.3% | 35,652 |
| 1554 | Pottawattamie County | Iowa | -0.3% | 92,996 |
| 1555 | Neshoba County | Mississippi | -0.3% | 28,732 |
| 1556 | Cabell County | West Virginia | -0.3% | 91,183 |
| 1557 | Lauderdale County | Mississippi | -0.3% | 70,317 |
| 1558 | Columbiana County | Ohio | -0.3% | 99,377 |
| 1559 | Franklin County | Massachusetts | -0.3% | 70,698 |
| 1560 | Bay County | Michigan | -0.3% | 102,123 |
| 1561 | Seward County | Kansas | -0.3% | 21,073 |
| 1562 | Dawson County | Nebraska | -0.3% | 24,452 |
| 1563 | Caledonia County | Vermont | -0.3% | 30,414 |
| 1564 | Ventura County | California | -0.3% | 830,851 |
| 1565 | Josephine County | Oregon | -0.3% | 87,867 |
| 1566 | Seneca County | Ohio | -0.3% | 54,522 |
| 1567 | Harrison County | West Virginia | -0.3% | 64,221 |
| 1568 | Halifax County | Virginia | -0.3% | 33,447 |
| 1569 | Wood County | West Virginia | -0.3% | 82,385 |
| 1570 | Chittenden County | Vermont | -0.3% | 169,115 |
| 1571 | Marion County | Illinois | -0.3% | 36,382 |
| 1572 | Westmoreland County | Pennsylvania | -0.3% | 349,324 |
| 1573 | Tompkins County | New York | -0.3% | 104,047 |
| 1574 | Georgetown County | South Carolina | -0.3% | 65,912 |
| 1575 | Charlevoix County | Michigan | -0.3% | 26,036 |
| 1576 | Camden County | Missouri | -0.3% | 44,047 |
| 1577 | Granville County | North Carolina | -0.3% | 61,421 |
| 1578 | Tyler County | Texas | -0.3% | 20,443 |
| 1579 | Kay County | Oklahoma | -0.3% | 43,490 |
| 1580 | Onondaga County | New York | -0.3% | 466,584 |
| 1581 | Malheur County | Oregon | -0.3% | 32,261 |
| 1582 | Windsor County | Vermont | -0.3% | 57,312 |
| 1583 | Jackson County | Illinois | -0.3% | 52,501 |
| 1584 | Carroll County | Ohio | -0.3% | 26,475 |
| 1585 | Venango County | Pennsylvania | -0.3% | 49,346 |
| 1586 | Pittsburg County | Oklahoma | -0.3% | 43,320 |
| 1587 | St. Landry Parish | Louisiana | -0.3% | 80,765 |
| 1588 | Mercer County | Pennsylvania | -0.3% | 107,860 |
| 1589 | Dickinson County | Michigan | -0.4% | 25,827 |
| 1590 | Stoddard County | Missouri | -0.4% | 28,284 |
| 1591 | Marion County | Mississippi | -0.4% | 24,001 |
| 1592 | Douglas County | Oregon | -0.4% | 111,951 |
| 1593 | Newton County | Mississippi | -0.4% | 20,960 |
| 1594 | Delta County | Michigan | -0.4% | 36,582 |
| 1595 | Washington County | Ohio | -0.4% | 58,389 |
| 1596 | Delta County | Colorado | -0.4% | 32,178 |
| 1597 | Miami-Dade County | Florida | -0.4% | 2,802,029 |
| 1598 | Livingston County | Illinois | -0.4% | 35,057 |
| 1599 | Otero County | New Mexico | -0.4% | 70,368 |
| 1600 | Orleans Parish | Louisiana | -0.4% | 362,154 |
1830 ranked entries.