Ranking of Iowa Counties By Natural Population Increase in 2015

Updated on January 26, 2024.

Based on the US Census Vintage data estimates, in 2015, the Natural Population Increase for Iowa was 9.95K. Among all Iowa counties, Iowa had the highest natural population increase (9.95K), followed by Polk County (3.44K), and Johnson County (1.16K).

The chart below shows the top 10 counties, and the table below shows the ranking of all Iowa counties.

You can see similar ranking information for related topics, and for other states. You can also see the ranking of all counties in the United States.

See this for other years:
Ranking of Iowa Counties By Natural Population Increase in 2015
Iowa
9.95K
Polk
3.44K
Johnson
1.16K
Linn
1.12K
Dallas
834
Scott
764
Black Hawk
591
Woodbury
553
Story
389
Pottawattamie
289
Ranking of Iowa Counties By Natural Population Increase in 2015
Rank
County
Natural Pop. Increase
1 Iowa 9,946
2 Polk County 3,440
3 Johnson County 1,160
4 Linn County 1,117
5 Dallas County 834
6 Scott County 764
7 Black Hawk County 591
8 Woodbury County 553
9 Story County 389
10 Pottawattamie County 289
11 Dubuque County 285
12 Sioux County 258
13 Warren County 145
14 Muscatine County 123
15 Buena Vista County 105
16 Benton County 80
17 Buchanan County 71
18 Washington County 69
19 Davis County 68
19 Mahaska County 68
20 Lyon County 56
21 Crawford County 46
21 Louisa County 46
22 Delaware County 45
22 Jefferson County 45
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