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    Jan 1990    
 
 
    Sep 2018
Persons
Name Sep 2018 Aug 2018 Sep 2017
Adair County
4,156 4,134 4,156
Adams County
2,107 2,073 2,115
Allamakee County
7,381 7,267 7,474
Appanoose County
5,939 5,918 5,981
Audubon County
3,016 3,034 3,134
Benton County
13,429 13,433 13,436
Black Hawk County
67,527 67,021 68,310
Boone County
14,854 14,564 14,913
Bremer County
13,511 13,377 13,682
Buchanan County
10,979 10,989 11,001
Buena Vista County
11,387 11,202 11,290
Butler County
7,727 7,621 7,863
Calhoun County
4,234 4,149 4,297
Carroll County
10,881 10,971 10,983
Cass County
6,958 6,938 7,124
Cedar County
10,799 10,601 10,827
Cerro Gordo County
23,315 23,549 23,095
Cherokee County
6,045 5,949 6,108
Chickasaw County
6,407 6,399 6,397
Clarke County
4,773 4,802 4,730
Clay County
8,481 8,363 8,618
Clayton County
10,122 10,079 10,184
Clinton County
22,707 22,654 23,105
Crawford County
7,886 7,850 8,119
Dallas County
47,046 47,702 45,951
Davis County
4,249 4,194 4,279
Decatur County
4,361 4,304 4,381
Delaware County
10,355 10,282 10,457
Des Moines County
19,192 19,442 19,462
Dickinson County
10,211 10,971 10,148
Dubuque County
53,928 53,897 54,274
Emmet County
5,334 5,306 5,441
Fayette County
10,204 10,015 10,359
Floyd County
8,815 8,947 8,784
Franklin County
5,730 5,745 5,795
Fremont County
3,744 3,731 3,805
Greene County
5,346 5,318 5,351
Grundy County
6,412 6,363 6,498
Guthrie County
5,619 5,667 5,554
Hamilton County
7,029 6,951 7,091
Hancock County
6,072 6,116 6,101
Hardin County
8,305 8,214 8,475
Harrison County
7,393 7,413 7,324
Henry County
9,841 9,674 9,899
Howard County
5,035 5,074 5,059
Humboldt County
5,275 5,210 5,296
Ida County
4,073 4,059 4,040
Iowa County
10,700 10,674 10,668
Jackson County
10,797 10,811 10,863
Jasper County
19,292 19,164 19,257
Jefferson County
8,910 8,757 8,881
Johnson County
86,160 85,299 85,564
Jones County
10,421 10,396 10,447
Keokuk County
5,100 5,008 5,162
Kossuth County
8,606 8,481 8,635
Lee County
15,759 15,866 15,788
Linn County
118,646 118,737 118,130
Louisa County
5,991 6,019 6,024
Lucas County
4,240 4,260 4,325
Lyon County
6,930 6,910 6,991
Madison County
8,420 8,539 8,236
Mahaska County
11,473 11,185 11,540
Marion County
17,730 17,315 17,581
Marshall County
17,917 18,388 17,948
Mills County
7,365 7,375 7,291
Mitchell County
5,852 5,935 5,714
Monona County
4,375 4,341 4,463
Monroe County
3,871 3,858 3,908
Montgomery County
4,912 4,948 4,929
Muscatine County
21,480 21,707 21,749
O'Brien County
7,965 7,956 7,953
Osceola County
3,506 3,481 3,535
Page County
6,085 6,069 6,219
Palo Alto County
4,917 4,865 4,923
Plymouth County
14,586 14,462 14,592
Pocahontas County
4,274 4,108 4,405
Polk County
264,410 268,453 258,239
Pottawattamie County
48,551 48,835 47,838
Poweshiek County
10,384 9,620 10,761
Ringgold County
2,550 2,529 2,562
Sac County
5,325 5,304 5,390
Scott County
86,625 87,513 86,095
Shelby County
6,568 6,663 6,625
Sioux County
20,451 19,722 20,522
Story County
59,644 56,665 59,039
Tama County
9,522 9,666 9,481
Taylor County
3,260 3,229 3,249
Union County
6,355 6,313 6,402
Van Buren County
3,650 3,607 3,689
Wapello County
17,501 17,467 17,631
Warren County
27,830 28,242 27,151
Washington County
12,436 12,303 12,395
Wayne County
2,726 2,679 2,781
Webster County
19,281 19,408 19,180
Winneshiek County
11,890 10,859 12,139
Winnebago County
5,136 5,211 5,179
Woodbury County
54,410 54,112 54,231
Worth County
4,196 4,247 4,215
Wright County
6,381 6,427 6,511
   

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