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100 Biggest US Counties

Top 100 US Counties by population
2020 US Census
Quiz by burtviile
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Last updated: May 20, 2023
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First submittedJune 4, 2014
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Average score58.0%
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Population
County
State
10,014,009
Los Angeles
CA
5,275,541
Cook
IL
4,731,145
Harris
TX
4,420,568
Maricopa
AZ
3,298,634
San Diego
CA
3,186,989
Orange
CA
2,736,074
Kings
NY
2,701,767
Miami-Dade
FL
2,613,539
Dallas
TX
2,418,185
Riverside
CA
2,405,464
Queens
NY
2,269,675
King
WA
2,265,461
Clark
NV
2,181,654
San Bernardino
CA
2,110,640
Tarrant
TX
2,009,324
Bexar
TX
1,944,375
Broward
FL
1,936,259
Santa Clara
CA
1,793,561
Wayne
MI
1,694,251
New York
NY
1,682,353
Alameda
CA
1,632,002
Middlesex
MA
1,603,797
Philadelphia
PA
1,585,055
Sacramento
CA
1,525,920
Suffolk
NY
1,492,191
Palm Beach
FL
1,472,654
Bronx
NY
1,459,762
Hillsborough
FL
1,429 ,908
Orange
FL
1,395,774
Nassau
NY
1,323,807
Franklin
OH
1,290,188
Travis
TX
1,281,565
Hennepin
MN
1,274,395
Oakland
MI
Population
County
State
1,264,817
Cuyahoga
OH
1,250,578
Allegheny
PA
1,185,238
Salt Lake
UT
1,165,927
Contra Costa
CA
1,150,309
Fairfax
VA
1,129,410
Wake
NC
1,115,482
Mecklenburg
NC
1,066,710
Fulton
GA
1,064,465
Collin
TX
1,062,061
Montgomery
MD
1,043,433
Pima
AZ
1,016,508
Honolulu
HI
1,008,654
Fresno
CA
1,004,457
Westchester
NY
1,004,125
Saint Louis
MO
995,567
Duval
FL
977,203
Marion
IN
967,201
Prince George's
MD
959,107
Pinellas
FL
957,419
Fairfield
CT
957,062
Gwinnett
GA
955,732
Bergen
NJ
954,236
Erie
NY
939,489
Milwaukee
WI
932,877
DuPage
IL
929,744
Shelby
TN
921,130
Pierce
WA
909,235
Kern
CA
906,422
Denton
TX
899,498
Hartford
CT
881,217
Macomb
MI
873,965
San Francisco
CA
870,781
Hidalgo
TX
Population
County
State
865,657
El Paso
TX
864,835
New Haven
CT
863,728
Essex
NJ
863,162
Middlesex
NJ
862,111
Worcester
MA
856,553
Montgomery
PA
854,535
Baltimore
MD
843,843
Ventura
CA
830,639
Hamilton
OH
827,957
Snohomish
WA
822,779
Fort Bend
TX
815,428
Multnomah
OR
809,829
Essex
MA
797,936
Suffolk
MA
796,292
Oklahoma
OK
782,969
Jefferson
KY
779,233
San Joaquin
CA
766,149
Cobb
GA
764,442
San Mateo
CA
764,382
DeKalb
GA
760,822
Lee
FL
759,443
Monroe
NY
730,395
El Paso
CO
725,981
Norfolk
MA
725,046
Polk
FL
724,854
Hudson
NJ
717,204
Jackson
MO
715,884
Davidson
TN
715,522
Denver
CO
714,342
Lake
IL
696,355
Will
IL
676,444
Bernalillo
NM
674,721
Jefferson
AL
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