1 Los Angeles County california 9,519,338
2 Cook County Illinois 5,376,741
3 Harris County Texas 3,400,578
4 Maricopa County Arizona 3,072,149
5 Orange County california 2,846,289
6 San Diego County california 2,813,833
7 Kings County New York 2,465,326
8 Miami-Dade County Florida 2,253,362
9 Queens County New York 2,229,379
10 Dallas County Texas 2,218,899
11 Wayne County Michigan 2,061,162
12 King County Washington 1,737,034
13 San Bernardino County california 1,709,434
14 Santa Clara County california 1,682,585
15 Broward County Florida 1,623,018
16 Riverside County california 1,545,387
17 New York County New York 1,537,195
18 Philadelphia County Pennsylvania 1,517,550
19 Middlesex County Massachusetts 1,465,396
20 Tarrant County Texas 1,446,219
21 Alameda County california 1,443,741
22 Suffolk County New York 1,419,369
23 Cuyahoga County Ohio 1,393,978
24 Bexar County Texas 1,392,931
25 Clark County Nevada 1,375,765
26 Nassau County New York 1,334,544
27 Bronx County New York 1,332,650
28 Allegheny County Pennsylvania 1,281,666
29 Sacramento County california 1,223,499
30 Oakland County Michigan 1,194,156
31 Palm Beach County Florida 1,131,184
32 Hennepin County Minnesota 1,116,200
33 Franklin County Ohio 1,068,978
34 St. Louis County Missouri 1,016,315
35 Hillsborough County Florida 998,948
36 Fairfax County Virginia 969,749
37 Erie County New York 950,265
38 Contra Costa County california 948,816
39 Milwaukee County Wisconsin 940,164
40 Westchester County New York 923,459
41 Pinellas County Florida 921,482
42 DuPage County Illinois 904,161
43 Salt Lake County Utah 898,387
44 Shelby County Tennessee 897,472
45 Orange County Florida 896,344
46 Bergen County New Jersey 884,118
47 Fairfield County Connecticut 882,567
48 Honolulu County Hawaii 876,156
49 Montgomery County Maryland 873,341
50 Marion County Indiana 860,454
51 Hartford County Connecticut 857,183
52 Hamilton County Ohio 845,303
53 Pima County Arizona 843,746
54 New Haven County Connecticut 824,008
55 Fulton County Georgia 816,006
56 Travis County Texas 812,280
57 Prince George's County Maryland 801,515
58 Fresno County california 799,407
59 Essex County New Jersey 793,633
60 Macomb County Michigan 788,149
61 Duval County Florida 778,879
62 San Francisco County california 776,733
63 Baltimore County Maryland 754,292
64 Ventura County california 753,197
65 Worcester County Massachusetts 750,963
66 Middlesex County New Jersey 750,162
67 Montgomery County Pennsylvania 750,097
68 Monroe County New York 735,343
69 Essex County Massachusetts 723,419
70 San Mateo County california 707,161
71 Pierce County Washington 700,820
72 Mecklenburg County North Carolina 695,454
73 Jefferson County Kentucky 693,604
74 Suffolk County Massachusetts 689,807
75 El Paso County Texas 679,622
76 DeKalb County Georgia 665,865
77 Jefferson County Alabama 662,047
78 Kern County california 661,645
79 Multnomah County Oregon 660,486
80 Oklahoma County Oklahoma 660,448
81 Jackson County Missouri 654,880
82 Baltimore city Maryland 651,154
83 Norfolk County Massachusetts 650,308
84 Lake County Illinois 644,356
85 Wake County North Carolina 627,846
86 Providence County Rhode Island 621,602
87 Monmouth County New Jersey 615,301
88 Hudson County New Jersey 608,975
89 Cobb County Georgia 607,751
90 Snohomish County Washington 606,024
91 Bucks County Pennsylvania 597,635
92 Gwinnett County Georgia 588,448
93 Kent County Michigan 574,335
94 District of Columbia District of Columbia 572,059
95 Davidson County Tennessee 569,891
96 Hidalgo County Texas 569,463
97 San Joaquin County california 563,598
98 Tulsa County Oklahoma 563,299
99 Montgomery County Ohio 559,062
100 Bernalillo County New Mexico 556,678
