100 Largest Counties

Table 7: Population Estimates for the 100 Largest U.S. Counties Based on July 1, 2006 Population Estimates: April 1, 2000 to July 1, 2006
Rank Geographic Area Population Estimates April 1, 2000
July 1, 2006 July 1, 2005 July 1, 2004 July 1, 2003 July 1, 2002 July 1, 2001 July 1, 2000 Estimates Base Census
1 Los Angeles County, CA 9,948,081 9,941,197 9,917,538 9,862,088 9,776,424 9,663,083 9,547,850 9,519,330 9,519,338
2 Cook County, IL 5,288,655 5,303,943 5,326,269 5,348,906 5,369,642 5,381,796 5,377,890 5,376,626 5,376,741
3 Harris County, TX 3,886,207 3,762,844 3,695,348 3,634,744 3,571,841 3,490,589 3,415,527 3,400,554 3,400,578
4 Maricopa County, AZ 3,768,123 3,638,481 3,498,347 3,389,229 3,296,739 3,198,064 3,097,240 3,072,339 3,072,149
5 Orange County, CA 3,002,048 2,992,642 2,983,977 2,961,937 2,932,364 2,898,135 2,857,659 2,846,289 2,846,289
6 San Diego County, CA 2,941,454 2,936,609 2,933,929 2,921,810 2,901,719 2,864,593 2,824,933 2,813,833 2,813,833
7 Kings County, NY 2,508,820 2,511,408 2,497,859 2,483,164 2,481,122 2,475,837 2,466,952 2,465,525 2,465,326
8 Miami-Dade County, FL 2,402,208 2,377,725 2,354,000 2,334,373 2,316,632 2,288,121 2,260,646 2,253,779 2,253,362
9 Dallas County, TX 2,345,815 2,308,527 2,290,710 2,282,284 2,276,489 2,264,243 2,225,945 2,218,843 2,218,899
10 Queens County, NY 2,255,175 2,256,576 2,250,718 2,244,238 2,234,000 2,236,424 2,231,845 2,229,401 2,229,379
11 Riverside County, CA 2,026,803 1,945,392 1,868,528 1,781,299 1,694,734 1,620,932 1,560,091 1,545,387 1,545,387
12 San Bernardino County, CA 1,999,332 1,964,511 1,914,795 1,861,853 1,809,402 1,762,152 1,719,206 1,709,434 1,709,434
13 Wayne County, MI 1,971,853 1,990,932 2,008,343 2,023,800 2,037,921 2,049,981 2,059,247 2,061,162 2,061,162
14 King County, WA 1,826,732 1,799,119 1,779,764 1,767,007 1,761,370 1,755,331 1,739,212 1,737,043 1,737,034
15 Broward County, FL 1,787,636 1,782,016 1,754,984 1,730,255 1,706,774 1,672,233 1,632,821 1,623,018 1,623,018
16 Clark County, NV 1,777,539 1,709,364 1,648,291 1,574,830 1,516,592 1,456,766 1,393,381 1,375,738 1,375,765
17 Santa Clara County, CA 1,731,281 1,705,158 1,685,568 1,679,420 1,679,529 1,692,695 1,686,885 1,682,585 1,682,585
18 Tarrant County, TX 1,671,295 1,619,666 1,586,277 1,556,747 1,526,307 1,489,516 1,454,612 1,446,174 1,446,219
19 New York County, NY 1,611,581 1,606,275 1,590,911 1,582,705 1,569,487 1,562,498 1,539,610 1,537,372 1,537,195
20 Bexar County, TX 1,555,592 1,516,586 1,491,049 1,464,691 1,441,452 1,415,534 1,397,846 1,392,931 1,392,931
21 Suffolk County, NY 1,469,715 1,472,086 1,473,391 1,467,065 1,455,208 1,441,852 1,424,311 1,419,352 1,419,369
22 Middlesex County, MA 1,467,016 1,464,985 1,467,896 1,470,081 1,472,459 1,475,919 1,469,030 1,466,394 1,465,396
23 Alameda County, CA 1,457,426 1,451,065 1,452,735 1,459,268 1,466,095 1,471,663 1,450,738 1,443,741 1,443,741
24 Philadelphia County, PA 1,448,394 1,456,350 1,465,475 1,473,364 1,485,249 1,497,897 1,513,655 1,517,550 1,517,550
25 Sacramento County, CA 1,374,724 1,363,423 1,350,861 1,330,044 1,302,102 1,266,762 1,230,401 1,223,499 1,223,499
26 Bronx County, NY 1,361,473 1,364,566 1,367,529 1,367,244 1,361,973 1,348,418 1,334,381 1,332,650 1,332,650
27 Nassau County, NY 1,325,662 1,331,620 1,336,843 1,338,864 1,339,514 1,337,069 1,336,575 1,334,539 1,334,544
28 Cuyahoga County, OH 1,314,241 1,330,428 1,346,194 1,359,187 1,371,563 1,382,578 1,392,172 1,393,845 1,393,978
29 Palm Beach County, FL 1,274,013 1,264,956 1,241,846 1,210,844 1,187,221 1,158,583 1,135,822 1,131,191 1,131,184
30 Allegheny County, PA 1,223,411 1,233,036 1,245,789 1,257,062 1,265,413 1,272,507 1,279,868 1,281,666 1,281,666
31 Oakland County, MI 1,214,255 1,213,669 1,211,670 1,207,544 1,203,454 1,202,615 1,196,786 1,194,156 1,194,156
32 Hillsborough County, FL 1,157,738 1,131,542 1,099,350 1,071,772 1,051,045 1,026,300 1,003,200 998,948 998,948
33 Hennepin County, MN 1,122,093 1,118,746 1,119,423 1,119,633 1,120,871 1,123,523 1,117,817 1,116,039 1,116,200
34 Franklin County, OH 1,095,662 1,089,365 1,086,152 1,084,994 1,081,840 1,078,837 1,071,663 1,068,869 1,068,978
35 Orange County, FL 1,043,500 1,021,884 988,649 962,823 944,711 926,178 902,355 896,346 896,344
36 Contra Costa County, CA 1,024,319 1,017,644 1,007,254 999,196 988,997 977,125 953,769 948,816 948,816
37 Fairfax County, VA 1,010,443 1,010,015 1,003,496 998,083 993,966 987,146 975,332 969,677 969,749
38 St. Louis County, MO 1,000,510 1,002,258 1,006,249 1,010,462 1,014,162 1,016,419 1,016,467 1,016,300 1,016,315
39 Salt Lake County, UT 978,701 960,297 936,194 925,782 922,430 912,881 900,806 898,412 898,387
40 Fulton County, GA 960,009 934,242 905,802 880,514 862,679 845,688 816,662 815,821 816,006
41 Westchester County, NY 949,355 947,719 946,577 943,772 941,254 935,095 926,068 923,361 923,459
42 Pima County, AZ 946,362 925,000 905,848 889,949 877,509 861,437 848,632 843,746 843,746
43 DuPage County, IL 932,670 931,219 929,439 925,554 922,544 916,221 907,128 904,349 904,161
44 Montgomery County, MD 932,131 927,405 921,264 916,198 907,926 894,575 878,683 874,165 873,341
45 Pinellas County, FL 924,413 926,810 926,350 924,907 924,546 923,695 922,313 921,495 921,482
46 Erie County, NY 921,390 928,215 934,653 938,847 941,707 945,540 949,398 950,265 950,265
47 Travis County, TX 921,006 889,542 869,359 854,283 846,602 843,203 819,899 812,299 812,280
48 Milwaukee County, WI 915,097 918,673 924,828 929,919 933,376 936,524 939,612 940,164 940,164
49 Shelby County, TN 911,438 905,705 903,362 902,205 900,244 898,197 898,214 897,472 897,472
50 Honolulu County, HI 909,863 904,645 897,969 891,548 885,678 879,180 875,410 876,156 876,156
51 Bergen County, NJ 904,037 902,308 901,807 898,452 895,587 891,599 886,003 884,118 884,118
52 Fairfield County, CT 900,440 901,086 900,683 899,018 895,083 890,375 884,916 882,567 882,567
53 Fresno County, CA 891,756 878,089 865,468 850,360 832,415 814,910 802,273 799,407 799,407
54 Hartford County, CT 876,927 875,422 872,435 871,471 866,517 862,030 858,539 857,183 857,183
55 Marion County, IN 865,504 861,760 860,674 862,150 861,911 863,056 860,508 860,454 860,454
56 New Haven County, CT 845,244 844,510 842,707 840,287 834,395 829,445 825,108 824,008 824,008
57 Prince George's County, MD 841,315 842,764 837,837 832,761 825,815 815,927 802,712 800,691 801,515
58 Duval County, FL 837,964 826,791 818,375 810,215 801,343 790,344 779,711 778,866 778,879
59 Macomb County, MI 832,861 828,950 823,313 815,694 808,509 800,837 791,032 788,149 788,149
60 Mecklenburg County, NC 827,445 796,369 770,638 752,227 735,194 719,552 700,462 695,427 695,454
61 Hamilton County, OH 822,596 828,487 832,250 836,547 840,362 844,569 843,993 845,273 845,303
62 Ventura County, CA 799,720 796,348 795,838 790,127 781,049 768,784 756,772 753,195 753,197
63 Baltimore County, MD 787,384 783,405 779,938 774,869 768,839 762,553 756,019 754,292 754,292
64 Middlesex County, NJ 786,971 789,283 783,339 777,706 770,862 762,509 753,206 750,162 750,162
65 Wake County, NC 786,522 750,865 720,170 698,917 678,426 657,738 633,313 627,865 627,846
66 Essex County, NJ 786,147 789,166 793,079 795,727 796,066 794,622 792,651 792,305 793,633
67 Worcester County, MA 784,992 781,704 777,956 774,808 769,393 761,904 752,780 749,973 750,963
68 Kern County, CA 780,117 756,981 733,784 712,860 693,125 675,997 663,864 661,655 661,645
69 Montgomery County, PA 775,688 774,666 772,628 770,037 764,242 758,419 751,010 748,987 750,097
70 Pierce County, WA 766,878 753,209 745,280 739,674 731,267 718,393 704,091 700,818 700,820
71 Gwinnett County, GA 757,104 726,790 700,502 673,526 649,355 623,903 596,659 588,448 588,448
72 San Francisco County, CA 744,041 741,025 743,852 752,853 763,400 775,257 776,885 776,733 776,733
73 El Paso County, TX 736,310 721,183 712,481 702,281 694,078 687,915 681,572 679,622 679,622
74 Essex County, MA 735,958 734,261 733,812 734,785 734,710 731,673 725,475 723,419 723,419
75 Monroe County, NY 730,807 732,057 734,873 735,751 736,261 735,468 735,738 735,343 735,343
76 DeKalb County, GA 723,602 713,679 702,165 695,329 688,582 681,178 668,450 666,057 665,865
77 Lake County, IL 713,076 704,086 693,425 682,705 675,791 662,826 648,866 644,586 644,356
78 San Mateo County, CA 705,499 701,175 698,912 699,751 702,566 708,114 708,641 707,163 707,161
79 Jefferson County, KY 701,500 699,051 698,052 697,182 695,645 694,736 693,907 693,604 693,604
80 Hidalgo County, TX 700,634 678,652 657,394 635,533 613,400 591,578 574,095 569,463 569,463
81 Collin County, TX 698,851 660,926 628,757 597,536 569,438 538,200 500,224 491,772 491,675
82 Oklahoma County, OK 691,266 684,192 678,650 675,863 671,393 664,825 661,741 660,448 660,448
83 Suffolk County, MA 687,610 691,965 694,582 699,359 702,305 700,988 689,985 689,807 689,807
84 Multnomah County, OR 681,454 672,947 671,172 677,608 675,468 668,903 661,584 660,486 660,486
85 Cobb County, GA 679,325 663,528 653,841 645,304 638,411 626,842 612,529 607,751 607,751
86 San Joaquin County, CA 673,170 664,796 649,338 631,227 612,730 593,184 568,333 563,598 563,598
87 Snohomish County, WA 669,887 655,564 644,102 636,591 632,156 622,991 609,264 606,024 606,024
88 Will County, IL 668,217 642,625 617,846 585,526 559,616 533,486 508,391 502,267 502,266
89 Jackson County, MO 664,078 662,133 661,433 661,063 660,822 658,274 655,652 654,880 654,880
90 Jefferson County, AL 656,700 656,014 657,276 658,213 658,990 660,996 662,041 662,041 662,047
91 Norfolk County, MA 654,753 652,530 653,390 653,438 654,536 653,806 651,333 650,308 650,308
92 Providence County, RI 635,596 638,595 641,295 638,509 634,111 627,885 622,878 621,602 621,602
93 Monmouth County, NJ 635,285 634,841 634,583 632,489 628,290 622,673 617,311 615,301 615,301
94 Baltimore city, MD 631,366 636,377 641,943 643,304 636,302 645,305 648,481 651,154 651,154
95 Bucks County, PA 623,205 619,772 616,533 612,369 609,085 604,199 599,525 597,632 597,635
96 Bernalillo County, NM 615,099 603,783 591,799 581,151 572,206 561,942 556,902 556,002 556,678
97 Hudson County, NJ 601,146 602,970 604,766 607,316 610,376 613,372 609,564 608,975 608,975
98 Kent County, MI 599,524 595,979 592,651 589,949 586,524 582,012 576,325 574,335 574,335
99 Denton County, TX 584,238 554,994 531,054 510,292 488,311 463,681 438,869 432,966 432,976
100 District of Columbia, DC 581,530 582,049 579,720 577,476 578,907 577,357 571,042 572,059 572,059
Note: The April 1, 2000 estimates base reflects changes to the Census 2000 population resulting from legal boundary updates as of January 1 of the estimates year, other geographic program changes, and Count Question Resolution actions. All geographic boundaries for the July 1, 2006 population estimates series are defined as of January 1, 2006. (X) Not applicable
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Suggested Citation:
Table 7: Population Estimates for the 100 Largest U.S. Counties Based on July 1, 2006 Population Estimates: April 1, 2000 to July 1, 2006 (CO-EST2006-07)
Source: Population Division, U.S. Census Bureau
Release Date: March 20, 2007