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 |
|---|---|---|---|---|
| 851 | Ionia County | Michigan | 0.4% | 66,557 |
| 852 | De Soto Parish | Louisiana | 0.4% | 27,381 |
| 853 | Knox County | Maine | 0.4% | 41,117 |
| 854 | Seminole County | Oklahoma | 0.4% | 23,441 |
| 855 | Anne Arundel County | Maryland | 0.4% | 603,380 |
| 856 | Shawano County | Wisconsin | 0.4% | 41,560 |
| 857 | Luzerne County | Pennsylvania | 0.4% | 332,126 |
| 858 | Columbus County | North Carolina | 0.4% | 50,487 |
| 859 | Rhea County | Tennessee | 0.4% | 34,844 |
| 860 | Houghton County | Michigan | 0.4% | 37,842 |
| 861 | Eaton County | Michigan | 0.4% | 109,581 |
| 862 | Bingham County | Idaho | 0.4% | 51,153 |
| 863 | Marion County | Ohio | 0.4% | 65,115 |
| 864 | Todd County | Minnesota | 0.4% | 26,060 |
| 865 | Marquette County | Michigan | 0.4% | 68,064 |
| 866 | Morrison County | Minnesota | 0.4% | 34,620 |
| 867 | Hancock County | Ohio | 0.4% | 75,034 |
| 868 | Bergen County | New Jersey | 0.4% | 977,026 |
| 869 | Monmouth County | New Jersey | 0.4% | 651,035 |
| 870 | Middlesex County | Massachusetts | 0.4% | 1,669,979 |
| 871 | Cumberland County | North Carolina | 0.4% | 338,473 |
| 872 | Uinta County | Wyoming | 0.4% | 20,728 |
| 873 | Carteret County | North Carolina | 0.4% | 70,469 |
| 874 | Jasper County | Texas | 0.4% | 33,075 |
| 875 | Monroe County | Indiana | 0.4% | 143,345 |
| 876 | Northwest Hills Planning Region | Connecticut | 0.4% | 114,690 |
| 877 | Lonoke County | Arkansas | 0.4% | 76,664 |
| 878 | Porter County | Indiana | 0.4% | 176,049 |
| 879 | Winona County | Minnesota | 0.4% | 50,523 |
| 880 | Taos County | New Mexico | 0.4% | 34,564 |
| 881 | Washington County | Wisconsin | 0.4% | 139,238 |
| 882 | Barbour County | Alabama | 0.4% | 24,607 |
| 883 | Ontario County | New York | 0.4% | 113,130 |
| 884 | Dubuque County | Iowa | 0.4% | 99,381 |
| 885 | Navajo County | Arizona | 0.3% | 109,946 |
| 886 | Clallam County | Washington | 0.3% | 78,202 |
| 887 | Waukesha County | Wisconsin | 0.3% | 417,210 |
| 888 | Tate County | Mississippi | 0.3% | 28,725 |
| 889 | Orange County | Texas | 0.3% | 86,266 |
| 890 | Meeker County | Minnesota | 0.3% | 23,603 |
| 891 | Richmond County | New York | 0.3% | 501,290 |
| 892 | Lampasas County | Texas | 0.3% | 23,657 |
| 893 | New Castle County | Delaware | 0.3% | 588,026 |
| 894 | Washtenaw County | Michigan | 0.3% | 370,214 |
| 895 | Santa Clara County | California | 0.3% | 1,914,391 |
| 896 | Henry County | Ohio | 0.3% | 27,598 |
| 897 | Upson County | Georgia | 0.3% | 28,500 |
| 898 | District of Columbia | District of Columbia | 0.3% | 693,645 |
| 899 | Merrimack County | New Hampshire | 0.3% | 158,078 |
| 900 | Dodge County | Nebraska | 0.3% | 38,057 |
1830 ranked entries.