Ranking of US Counties By Total Population from Census 2020
Updated on January 30, 2023.
According to the data from the US 2020 Census, the most populated US county as at April 2020 was Los Angeles County, CA (10.01M), followed by Cook County, IL (5.28M), and Harris County, TX (4.73M).
The chart below shows the top 10 most populated counties, and the table below shows the ranking of the top 200 most populated counties in the United States.
You can see links at the bottom of the page for the ranking of counties by population for each state.
You may also be interested in:
Related Topics: US Census 2020 Topic List.
Data Source: US Census Bureau, 2020 Census.
Ranking of US Counties By Total Population from Census 2020
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| Rank | County | Population |
|---|---|---|
| 1 | Los Angeles County, CA | 10014009 |
| 2 | Cook County, IL | 5275541 |
| 3 | Harris County, TX | 4731145 |
| 4 | Maricopa County, AZ | 4420568 |
| 5 | San Diego County, CA | 3298634 |
| 6 | Orange County, CA | 3186989 |
| 7 | Kings County, NY | 2736074 |
| 8 | Miami-Dade County, FL | 2701767 |
| 9 | Dallas County, TX | 2613539 |
| 10 | Riverside County, CA | 2418185 |
| 11 | Queens County, NY | 2405464 |
| 12 | King County, WA | 2269675 |
| 13 | Clark County, NV | 2265461 |
| 14 | San Bernardino County, CA | 2181654 |
| 15 | Tarrant County, TX | 2110640 |
| 16 | Bexar County, TX | 2009324 |
| 17 | Broward County, FL | 1944375 |
| 18 | Santa Clara County, CA | 1936259 |
| 19 | Wayne County, MI | 1793561 |
| 20 | New York County, NY | 1694251 |
| 21 | Alameda County, CA | 1682353 |
| 22 | Middlesex County, MA | 1632002 |
| 23 | Philadelphia County, PA | 1603797 |
| 24 | Sacramento County, CA | 1585055 |
| 25 | Suffolk County, NY | 1525920 |
| 26 | Palm Beach County, FL | 1492191 |
| 27 | Bronx County, NY | 1472654 |
| 28 | Hillsborough County, FL | 1459762 |
| 29 | Orange County, FL | 1429908 |
| 30 | Nassau County, NY | 1395774 |
| 31 | Franklin County, OH | 1323807 |
| 32 | Travis County, TX | 1290188 |
| 33 | Hennepin County, MN | 1281565 |
| 34 | Oakland County, MI | 1274395 |
| 35 | Cuyahoga County, OH | 1264817 |
| 36 | Allegheny County, PA | 1250578 |
| 37 | Salt Lake County, UT | 1185238 |
| 38 | Contra Costa County, CA | 1165927 |
| 39 | Fairfax County, VA | 1150309 |
| 40 | Wake County, NC | 1129410 |
| 41 | Mecklenburg County, NC | 1115482 |
| 42 | Fulton County, GA | 1066710 |
| 43 | Collin County, TX | 1064465 |
| 44 | Montgomery County, MD | 1062061 |
| 45 | Pima County, AZ | 1043433 |
| 46 | Honolulu County, HI | 1016508 |
| 47 | Fresno County, CA | 1008654 |
| 48 | Westchester County, NY | 1004457 |
| 49 | St. Louis County, MO | 1004125 |
| 50 | Duval County, FL | 995567 |
| 51 | Marion County, IN | 977203 |
| 52 | Prince George's County, MD | 967201 |
| 53 | Pinellas County, FL | 959107 |
| 54 | Fairfield County, CT | 957419 |
| 55 | Gwinnett County, GA | 957062 |
| 56 | Bergen County, NJ | 955732 |
| 57 | Erie County, NY | 954236 |
| 58 | Milwaukee County, WI | 939489 |
| 59 | DuPage County, IL | 932877 |
| 60 | Shelby County, TN | 929744 |
| 61 | Pierce County, WA | 921130 |
| 62 | Kern County, CA | 909235 |
| 63 | Denton County, TX | 906422 |
| 64 | Hartford County, CT | 899498 |
| 65 | Macomb County, MI | 881217 |
| 66 | San Francisco County, CA | 873965 |
| 67 | Hidalgo County, TX | 870781 |
| 68 | El Paso County, TX | 865657 |
| 69 | New Haven County, CT | 864835 |
| 70 | Essex County, NJ | 863728 |
| 71 | Middlesex County, NJ | 863162 |
| 72 | Worcester County, MA | 862111 |
| 73 | Montgomery County, PA | 856553 |
| 74 | Baltimore County, MD | 854535 |
| 75 | Ventura County, CA | 843843 |
| 76 | Hamilton County, OH | 830639 |
| 77 | Snohomish County, WA | 827957 |
| 78 | Fort Bend County, TX | 822779 |
| 79 | Multnomah County, OR | 815428 |
| 80 | Essex County, MA | 809829 |
| 81 | Suffolk County, MA | 797936 |
| 82 | Oklahoma County, OK | 796292 |
| 83 | Jefferson County, KY | 782969 |
| 84 | San Joaquin County, CA | 779233 |
| 85 | Cobb County, GA | 766149 |
| 86 | San Mateo County, CA | 764442 |
| 87 | DeKalb County, GA | 764382 |
| 88 | Lee County, FL | 760822 |
| 89 | Monroe County, NY | 759443 |
| 90 | El Paso County, CO | 730395 |
| 91 | Norfolk County, MA | 725981 |
| 92 | Polk County, FL | 725046 |
| 93 | Hudson County, NJ | 724854 |
| 94 | Jackson County, MO | 717204 |
| 95 | Davidson County, TN | 715884 |
| 96 | Denver County, CO | 715522 |
| 97 | Lake County, IL | 714342 |
| 98 | Will County, IL | 696355 |
| 99 | Bernalillo County, NM | 676444 |
| 100 | Jefferson County, AL | 674721 |
| 101 | Tulsa County, OK | 669279 |
| 102 | Providence County, RI | 660741 |
| 103 | Utah County, UT | 659399 |
| 104 | Kent County, MI | 657974 |
| 105 | Arapahoe County, CO | 655070 |
| 106 | Bucks County, PA | 646538 |
| 107 | Monmouth County, NJ | 643615 |
| 108 | Ocean County, NJ | 637229 |
| 109 | Montgomery County, TX | 620443 |
| 110 | Johnson County, KS | 609863 |
| 111 | Williamson County, TX | 609017 |
| 112 | Brevard County, FL | 606612 |
| 113 | Washington County, OR | 600372 |
| 114 | Anne Arundel County, MD | 588261 |
| 115 | Baltimore city, MD | 585708 |
| 116 | Douglas County, NE | 584526 |
| 117 | Jefferson County, CO | 582910 |
| 118 | Bristol County, MA | 579200 |
| 119 | Delaware County, PA | 576830 |
| 120 | Union County, NJ | 575345 |
| 121 | New Castle County, DE | 570719 |
| 122 | Pasco County, FL | 561891 |
| 123 | Dane County, WI | 561504 |
| 124 | Volusia County, FL | 553543 |
| 125 | Lancaster County, PA | 552984 |
| 126 | Stanislaus County, CA | 552878 |
| 127 | Ramsey County, MN | 552352 |
| 128 | Guilford County, NC | 541299 |
| 129 | Summit County, OH | 540428 |
| 130 | Spokane County, WA | 539339 |
| 131 | Montgomery County, OH | 537309 |
| 132 | Chester County, PA | 534413 |
| 133 | Plymouth County, MA | 530819 |
| 134 | Greenville County, SC | 525534 |
| 135 | Passaic County, NJ | 524118 |
| 136 | Sedgwick County, KS | 523824 |
| 137 | Camden County, NJ | 523485 |
| 138 | Adams County, CO | 519572 |
| 139 | Kane County, IL | 516522 |
| 140 | Morris County, NJ | 509285 |
| 141 | Clark County, WA | 503311 |
| 142 | Lake County, IN | 498700 |
| 143 | Richmond County, NY | 495747 |
| 144 | Ada County, ID | 494967 |
| 145 | Polk County, IA | 492401 |
| 146 | Sonoma County, CA | 488863 |
| 147 | Washoe County, NV | 486492 |
| 148 | Prince William County, VA | 482204 |
| 149 | Knox County, TN | 478971 |
| 150 | Onondaga County, NY | 476516 |
| 151 | Tulare County, CA | 473117 |
| 152 | Seminole County, FL | 470856 |
| 153 | Hampden County, MA | 465825 |
| 154 | Burlington County, NJ | 461860 |
| 155 | Virginia Beach city, VA | 459470 |
| 156 | East Baton Rouge Parish, LA | 456781 |
| 157 | York County, PA | 456438 |
| 158 | Solano County, CA | 453491 |
| 159 | Santa Barbara County, CA | 448229 |
| 160 | Jefferson Parish, LA | 440781 |
| 161 | Dakota County, MN | 439882 |
| 162 | Monterey County, CA | 439035 |
| 163 | Sarasota County, FL | 434006 |
| 164 | Lucas County, OH | 431279 |
| 165 | Berks County, PA | 428849 |
| 166 | Pinal County, AZ | 425264 |
| 167 | Hillsborough County, NH | 422937 |
| 168 | Clackamas County, OR | 421401 |
| 169 | Cameron County, TX | 421017 |
| 170 | Loudoun County, VA | 420959 |
| 171 | Richland County, SC | 416147 |
| 172 | Mobile County, AL | 414809 |
| 173 | Charleston County, SC | 408235 |
| 174 | Waukesha County, WI | 406978 |
| 175 | Genesee County, MI | 406211 |
| 176 | St. Charles County, MO | 405262 |
| 177 | Placer County, CA | 404739 |
| 178 | Orange County, NY | 401310 |
| 179 | Manatee County, FL | 399710 |
| 180 | Pulaski County, AR | 399125 |
| 181 | Butler County, OH | 390357 |
| 182 | Osceola County, FL | 388656 |
| 183 | Madison County, AL | 388153 |
| 184 | Mercer County, NJ | 387340 |
| 185 | Allen County, IN | 385410 |
| 186 | Orleans Parish, LA | 383997 |
| 187 | Lake County, FL | 383956 |
| 188 | Lane County, OR | 382971 |
| 189 | Forsyth County, NC | 382590 |
| 190 | Marion County, FL | 375908 |
| 191 | Collier County, FL | 375752 |
| 192 | Stark County, OH | 374853 |
| 193 | Lehigh County, PA | 374557 |
| 194 | Washtenaw County, MI | 372258 |
| 195 | Brazoria County, TX | 372031 |
| 196 | Bell County, TX | 370647 |
| 197 | Hamilton County, TN | 366207 |
| 198 | Chesterfield County, VA | 364548 |
| 199 | Anoka County, MN | 363887 |
| 200 | Davis County, UT | 362679 |
Ranking of Counties By Total Population for each US State from Census 2020
Use the following links to see the ranking of counties by total population for each of the following US states from the Census 2020.