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    Jan 1990    
 
 
    Aug 2019
Persons
Name Aug 2019 Jul 2019 Aug 2018
Adair County
4,247 4,267 4,105
Adams County
2,160 2,173 2,099
Allamakee County
7,393 7,464 7,285
Appanoose County
6,066 6,114 5,851
Audubon County
3,245 3,247 3,160
Benton County
13,707 13,714 13,342
Black Hawk County
71,331 71,426 68,520
Boone County
15,063 15,159 14,683
Bremer County
14,164 14,202 13,752
Buchanan County
11,063 11,189 11,226
Buena Vista County
11,363 11,494 10,889
Butler County
7,913 7,949 7,736
Calhoun County
4,309 4,318 4,228
Carroll County
11,074 11,250 10,867
Cass County
7,189 7,202 7,004
Cedar County
10,878 10,873 10,602
Cerro Gordo County
24,319 24,591 23,487
Cherokee County
6,032 6,045 5,856
Chickasaw County
6,696 6,638 6,402
Clarke County
5,046 5,073 4,805
Clay County
8,722 8,828 8,606
Clayton County
10,349 10,398 10,149
Clinton County
22,769 22,849 22,410
Crawford County
8,194 8,144 8,062
Dallas County
50,644 51,184 48,057
Davis County
4,440 4,426 4,261
Decatur County
4,338 4,352 4,191
Delaware County
10,685 10,748 10,313
Des Moines County
20,274 20,445 19,552
Dickinson County
11,072 11,433 10,795
Dubuque County
57,470 57,780 55,092
Emmet County
5,341 5,463 5,212
Fayette County
10,781 10,774 10,233
Floyd County
9,243 9,174 8,950
Franklin County
5,941 6,018 5,759
Fremont County
3,786 3,833 3,705
Greene County
5,485 5,541 5,269
Grundy County
6,646 6,670 6,512
Guthrie County
5,829 5,862 5,577
Hamilton County
7,090 7,107 6,897
Hancock County
6,065 6,115 5,931
Hardin County
8,312 8,365 8,161
Harrison County
7,660 7,684 7,316
Henry County
9,891 9,969 9,308
Howard County
5,462 5,451 5,200
Humboldt County
5,276 5,258 5,108
Ida County
4,196 4,246 4,030
Iowa County
10,838 10,809 10,415
Jackson County
11,366 11,486 10,963
Jasper County
20,076 20,321 19,100
Jefferson County
9,327 9,446 9,000
Johnson County
87,296 87,348 85,189
Jones County
10,673 10,692 10,405
Keokuk County
5,065 5,104 5,022
Kossuth County
8,591 8,651 8,425
Lee County
16,425 16,375 15,888
Linn County
123,338 123,852 119,418
Louisa County
6,303 6,308 6,047
Lucas County
4,737 4,803 4,501
Lyon County
7,107 7,111 6,954
Madison County
8,858 8,933 8,433
Mahaska County
11,960 12,023 11,574
Marion County
18,781 18,979 17,739
Marshall County
18,122 18,235 18,253
Mills County
7,714 7,742 7,326
Mitchell County
6,087 6,123 5,884
Monona County
4,528 4,560 4,442
Monroe County
4,066 4,060 3,897
Montgomery County
5,079 5,108 4,940
Muscatine County
22,319 22,620 21,715
O'Brien County
8,307 8,455 8,058
Osceola County
3,595 3,590 3,535
Page County
6,494 6,577 6,389
Palo Alto County
5,137 5,118 4,895
Plymouth County
15,397 15,519 14,844
Pocahontas County
4,563 4,533 4,397
Polk County
281,208 284,108 266,219
Pottawattamie County
50,666 50,968 48,047
Poweshiek County
10,406 10,406 9,944
Ringgold County
2,565 2,591 2,547
Sac County
5,379 5,436 5,231
Scott County
91,648 91,732 87,394
Shelby County
6,899 6,932 6,689
Sioux County
20,537 20,722 19,989
Story County
58,432 57,429 55,892
Tama County
9,869 9,947 9,460
Taylor County
3,249 3,266 3,198
Union County
6,334 6,427 6,273
Van Buren County
3,749 3,779 3,640
Wapello County
18,186 18,286 17,472
Warren County
29,349 29,692 27,827
Washington County
12,319 12,304 12,101
Wayne County
2,779 2,803 2,721
Webster County
19,455 19,512 19,059
Winneshiek County
11,554 11,624 11,237
Winnebago County
5,087 5,146 5,008
Woodbury County
57,584 58,280 55,419
Worth County
4,283 4,317 4,187
Wright County
6,742 6,671 6,550
   

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