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    Jan 1990    
 
 
    Jul 2018
Persons
Name Jul 2018 Jun 2018 Jul 2017
Adair County
4,272 4,240 4,272
Adams County
2,114 2,113 2,187
Allamakee County
7,550 7,530 7,685
Appanoose County
6,116 6,179 6,206
Audubon County
3,154 3,108 3,341
Benton County
13,712 13,644 13,710
Black Hawk County
68,128 67,733 67,839
Boone County
14,813 14,803 14,951
Bremer County
13,651 13,520 13,717
Buchanan County
11,316 11,222 11,321
Buena Vista County
11,572 11,712 11,535
Butler County
7,870 7,865 7,969
Calhoun County
4,281 4,339 4,382
Carroll County
11,352 11,163 11,564
Cass County
7,091 7,159 7,144
Cedar County
10,784 10,969 10,756
Cerro Gordo County
24,041 23,849 23,612
Cherokee County
6,113 6,153 6,159
Chickasaw County
6,562 6,650 6,512
Clarke County
4,925 4,865 4,892
Clay County
8,688 8,669 8,726
Clayton County
10,407 10,371 10,502
Clinton County
23,075 22,961 23,392
Crawford County
8,097 8,127 8,352
Dallas County
48,520 48,249 46,989
Davis County
4,313 4,295 4,361
Decatur County
4,416 4,428 4,422
Delaware County
10,588 10,716 10,737
Des Moines County
19,917 19,609 20,000
Dickinson County
11,670 11,511 11,356
Dubuque County
54,416 54,612 54,476
Emmet County
5,582 5,558 5,527
Fayette County
10,226 10,248 10,312
Floyd County
9,089 8,976 8,974
Franklin County
5,938 5,898 5,980
Fremont County
3,847 3,837 3,943
Greene County
5,499 5,505 5,515
Grundy County
6,521 6,422 6,595
Guthrie County
5,849 5,768 5,792
Hamilton County
7,112 7,060 7,173
Hancock County
6,339 6,291 6,340
Hardin County
8,505 8,492 8,740
Harrison County
7,608 7,467 7,530
Henry County
9,907 9,794 9,694
Howard County
5,238 5,176 5,309
Humboldt County
5,312 5,378 5,375
Ida County
4,197 4,172 4,137
Iowa County
10,851 10,835 10,646
Jackson County
11,110 10,972 11,122
Jasper County
19,691 19,806 19,588
Jefferson County
8,938 9,101 8,859
Johnson County
85,334 85,188 84,567
Jones County
10,696 10,608 10,715
Keokuk County
5,172 5,201 5,295
Kossuth County
8,822 8,863 8,948
Lee County
16,049 16,134 16,143
Linn County
120,957 120,980 119,442
Louisa County
6,203 6,164 6,168
Lucas County
4,394 4,417 4,451
Lyon County
7,125 7,055 7,258
Madison County
8,709 8,643 8,485
Mahaska County
11,458 11,425 11,495
Marion County
17,706 17,692 17,505
Marshall County
18,369 18,263 18,435
Mills County
7,551 7,428 7,469
Mitchell County
6,146 6,024 6,133
Monona County
4,504 4,522 4,592
Monroe County
3,939 3,946 3,972
Montgomery County
5,084 5,047 5,094
Muscatine County
22,265 22,124 22,210
O'Brien County
8,230 8,262 8,160
Osceola County
3,609 3,603 3,708
Page County
6,314 6,221 6,451
Palo Alto County
5,006 5,028 5,033
Plymouth County
15,004 14,821 14,891
Pocahontas County
4,271 4,199 4,218
Polk County
272,747 271,682 263,718
Pottawattamie County
49,788 49,144 48,662
Poweshiek County
9,823 9,841 10,247
Ringgold County
2,639 2,594 2,683
Sac County
5,493 5,539 5,538
Scott County
88,319 87,536 87,644
Shelby County
6,818 6,729 6,910
Sioux County
20,523 20,330 20,522
Story County
55,831 55,653 54,620
Tama County
9,861 9,762 9,799
Taylor County
3,317 3,266 3,308
Union County
6,473 6,457 6,519
Van Buren County
3,691 3,680 3,787
Wapello County
17,785 17,674 17,961
Warren County
28,736 28,608 27,772
Washington County
12,404 12,306 12,467
Wayne County
2,793 2,800 2,833
Webster County
19,849 19,851 19,671
Winneshiek County
11,253 11,194 11,635
Winnebago County
5,355 5,317 5,345
Woodbury County
55,616 55,321 54,616
Worth County
4,372 4,325 4,375
Wright County
6,565 6,561 6,785
   

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