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 |
|---|---|---|---|---|
| 451 | Centre County | Pennsylvania | 157,393 | -0.7% |
| 452 | Cumberland County | New Jersey | 157,148 | 0.5% |
| 453 | Santa Fe County | New Mexico | 156,907 | -0.3% |
| 454 | Monroe County | Michigan | 156,004 | 0.1% |
| 455 | Spotsylvania County | Virginia | 155,388 | 1.9% |
| 456 | Rowan County | North Carolina | 155,096 | 0.9% |
| 457 | Livingston Parish | Louisiana | 155,036 | 1.2% |
| 458 | Kings County | California | 154,327 | 0.1% |
| 459 | Douglas County | Georgia | 154,293 | 1.5% |
| 460 | Grayson County | Texas | 153,613 | 1.8% |
| 461 | Orange County | North Carolina | 152,498 | 0.5% |
| 462 | Berrien County | Michigan | 152,444 | 0.0% |
| 463 | Randall County | Texas | 152,351 | 1.4% |
| 464 | Harnett County | North Carolina | 150,137 | 2.5% |
| 465 | Taylor County | Texas | 150,077 | 1.1% |
| 466 | Randolph County | North Carolina | 149,516 | 0.5% |
| 467 | Warren County | Kentucky | 149,375 | 1.9% |
| 468 | Sussex County | New Jersey | 148,063 | 0.4% |
| 469 | Jackson County | Mississippi | 147,666 | 0.5% |
| 470 | Lebanon County | Pennsylvania | 146,380 | 0.7% |
| 471 | Kendall County | Illinois | 145,470 | 1.6% |
| 472 | Boone County | Kentucky | 145,316 | 1.3% |
| 473 | Schuylkill County | Pennsylvania | 145,085 | 0.5% |
| 474 | Cache County | Utah | 145,000 | 0.2% |
| 475 | Coconino County | Arizona | 144,368 | -0.2% |
| 476 | Blount County | Tennessee | 143,820 | 1.1% |
| 477 | Monroe County | Indiana | 143,345 | 0.4% |
| 478 | Rock Island County | Illinois | 141,869 | 0.2% |
| 479 | Tangipahoa Parish | Louisiana | 141,346 | 1.0% |
| 480 | Washington County | Tennessee | 141,199 | 1.2% |
| 481 | Rockwall County | Texas | 140,738 | 2.8% |
| 482 | Flagler County | Florida | 140,360 | 3.0% |
| 483 | Berkeley County | West Virginia | 139,522 | 2.6% |
| 484 | Marathon County | Wisconsin | 139,432 | 0.2% |
| 485 | Washington County | Wisconsin | 139,238 | 0.4% |
| 486 | Pickens County | South Carolina | 139,198 | 1.0% |
| 487 | Florence County | South Carolina | 138,504 | 0.1% |
| 488 | Hampton city | Virginia | 137,315 | -0.1% |
| 489 | Bonneville County | Idaho | 135,771 | 1.5% |
| 490 | Clark County | Ohio | 135,340 | -0.6% |
| 491 | Ascension Parish | Louisiana | 135,105 | 0.8% |
| 492 | Madison County | Indiana | 135,088 | 1.1% |
| 493 | Strafford County | New Hampshire | 135,043 | 0.5% |
| 494 | Wood County | Ohio | 134,176 | 0.8% |
| 495 | Faulkner County | Arkansas | 133,979 | 1.4% |
| 496 | Calhoun County | Michigan | 133,408 | -0.2% |
| 497 | Saline County | Arkansas | 133,288 | 1.2% |
| 498 | Skagit County | Washington | 132,975 | 0.5% |
| 499 | Napa County | California | 132,949 | -0.1% |
| 500 | Linn County | Oregon | 132,843 | 0.2% |
3144 ranked entries.