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 |
|---|---|---|---|---|
| 1201 | Ottawa County | Ohio | 39,481 | -0.6% |
| 1202 | Fremont County | Wyoming | 39,464 | -0.5% |
| 1203 | Calloway County | Kentucky | 39,421 | 1.3% |
| 1204 | Lawrence County | Missouri | 39,401 | 0.5% |
| 1205 | Colleton County | South Carolina | 39,382 | -0.1% |
| 1206 | Fannin County | Texas | 39,265 | 1.3% |
| 1207 | Macon County | North Carolina | 39,232 | 1.1% |
| 1208 | Hopkins County | Texas | 39,063 | 0.6% |
| 1209 | Warren County | Missouri | 39,016 | 1.3% |
| 1210 | Crawford County | Kansas | 39,008 | 0.1% |
| 1211 | McKean County | Pennsylvania | 38,984 | -0.8% |
| 1212 | Montgomery County | Indiana | 38,954 | 0.1% |
| 1213 | Champaign County | Ohio | 38,820 | 0.3% |
| 1214 | Jim Wells County | Texas | 38,804 | -0.1% |
| 1215 | Independence County | Arkansas | 38,785 | 0.6% |
| 1216 | Pike County | Mississippi | 38,712 | -0.7% |
| 1217 | Brown County | Texas | 38,711 | 0.0% |
| 1218 | Tazewell County | Virginia | 38,635 | -0.9% |
| 1219 | Boone County | Arkansas | 38,628 | 0.3% |
| 1220 | Albany County | Wyoming | 38,558 | 0.0% |
| 1221 | Jasper County | South Carolina | 38,533 | 6.0% |
| 1222 | Pontotoc County | Oklahoma | 38,528 | 0.5% |
| 1223 | Wasatch County | Utah | 38,514 | 1.8% |
| 1224 | Guernsey County | Ohio | 38,379 | 0.1% |
| 1225 | Yadkin County | North Carolina | 38,325 | 0.3% |
| 1226 | Defiance County | Ohio | 38,292 | -0.1% |
| 1227 | Washington County | Texas | 38,288 | 1.6% |
| 1228 | Uintah County | Utah | 38,278 | 0.3% |
| 1229 | Dare County | North Carolina | 38,245 | 0.0% |
| 1230 | Talbot County | Maryland | 38,238 | -0.1% |
| 1231 | Susquehanna County | Pennsylvania | 38,237 | 0.1% |
| 1232 | Fayette County | West Virginia | 38,165 | -1.0% |
| 1233 | Jasper County | Iowa | 38,153 | 0.1% |
| 1234 | Oneida County | Wisconsin | 38,131 | -0.1% |
| 1235 | Woodford County | Illinois | 38,111 | -0.2% |
| 1236 | Wakulla County | Florida | 38,089 | 2.6% |
| 1237 | Des Moines County | Iowa | 38,077 | -0.2% |
| 1238 | Marshall County | Tennessee | 38,071 | 0.5% |
| 1239 | Dodge County | Nebraska | 38,057 | 0.3% |
| 1240 | Addison County | Vermont | 38,048 | 0.2% |
| 1241 | Sagadahoc County | Maine | 37,979 | 0.8% |
| 1242 | Scott County | Missouri | 37,975 | 0.1% |
| 1243 | Covington County | Alabama | 37,947 | -0.1% |
| 1244 | Avoyelles Parish | Louisiana | 37,941 | -1.0% |
| 1245 | Cocke County | Tennessee | 37,889 | 0.4% |
| 1246 | Clark County | Kentucky | 37,888 | 0.5% |
| 1247 | Putnam County | Indiana | 37,876 | 0.3% |
| 1248 | Clinton County | Pennsylvania | 37,870 | 0.2% |
| 1249 | Houghton County | Michigan | 37,842 | 0.4% |
| 1250 | Cass County | Indiana | 37,836 | -0.2% |
3144 ranked entries.