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 |
|---|---|---|---|---|
| 301 | Delaware County | Ohio | 242,032 | 2.2% |
| 302 | Tuscaloosa County | Alabama | 241,368 | 0.2% |
| 303 | Saratoga County | New York | 241,343 | 0.6% |
| 304 | Ellis County | Texas | 240,867 | 3.6% |
| 305 | Clay County | Florida | 239,593 | 1.0% |
| 306 | Shelby County | Alabama | 238,552 | 1.2% |
| 307 | Richmond city | Virginia | 237,257 | 1.0% |
| 308 | Whatcom County | Washington | 236,392 | 0.8% |
| 309 | Barnstable County | Massachusetts | 233,539 | -0.2% |
| 310 | Jefferson County | Missouri | 233,132 | 0.4% |
| 311 | Lake County | Ohio | 232,217 | 0.0% |
| 312 | Linn County | Iowa | 232,028 | 0.7% |
| 313 | Norfolk city | Virginia | 231,013 | 0.0% |
| 314 | Doña Ana County | New Mexico | 229,091 | 0.4% |
| 315 | Mohave County | Arizona | 228,102 | 0.8% |
| 316 | Hall County | Georgia | 226,568 | 1.4% |
| 317 | Oneida County | New York | 226,392 | -0.4% |
| 318 | Montgomery County | Alabama | 225,891 | 0.0% |
| 319 | Mahoning County | Ohio | 224,706 | 0.0% |
| 320 | Yuma County | Arizona | 224,449 | 1.4% |
| 321 | Yolo County | California | 224,410 | 0.5% |
| 322 | Caddo Parish | Louisiana | 224,226 | -0.5% |
| 323 | York County | Maine | 222,434 | 0.6% |
| 324 | Okaloosa County | Florida | 221,810 | 0.8% |
| 325 | Jackson County | Oregon | 221,795 | 0.2% |
| 326 | Benton County | Washington | 221,722 | 1.3% |
| 327 | Hernando County | Florida | 221,701 | 1.9% |
| 328 | Anderson County | South Carolina | 219,930 | 1.2% |
| 329 | Johnson County | Texas | 218,048 | 3.1% |
| 330 | Charlotte County | Florida | 217,212 | 2.7% |
| 331 | Onslow County | North Carolina | 217,175 | 1.2% |
| 332 | Harrison County | Mississippi | 217,136 | 1.2% |
| 333 | Clermont County | Ohio | 216,977 | 1.2% |
| 334 | Lackawanna County | Pennsylvania | 216,502 | 0.0% |
| 335 | Sumner County | Tennessee | 215,538 | 1.6% |
| 336 | Washington County | Utah | 213,670 | 2.5% |
| 337 | Deschutes County | Oregon | 213,072 | 0.9% |
| 338 | Minnehaha County | South Dakota | 212,691 | 1.6% |
| 339 | Hinds County | Mississippi | 211,888 | -0.4% |
| 340 | Iredell County | North Carolina | 211,798 | 2.8% |
| 341 | Santa Rosa County | Florida | 211,115 | 1.8% |
| 342 | Washington County | Pennsylvania | 210,802 | 0.1% |
| 343 | Hawaii County | Hawaii | 210,043 | 0.5% |
| 344 | Champaign County | Illinois | 209,972 | 0.4% |
| 345 | Kaufman County | Texas | 209,235 | 5.7% |
| 346 | Butte County | California | 209,211 | 0.3% |
| 347 | Comal County | Texas | 209,166 | 3.8% |
| 348 | Niagara County | New York | 208,912 | -0.2% |
| 349 | Elkhart County | Indiana | 208,774 | 0.3% |
| 350 | Calcasieu Parish | Louisiana | 208,466 | 0.7% |
3144 ranked entries.