Counties in Iowa by birth rate (July to June)

Davis County had the highest birth rate (July to June) of 99 counties in 2022, at 16.72 per 1,000 inhabitants. Dickinson County had the lowest, at 8.18 per 1,000 inhabitants. The median was 10.86 per 1,000 inhabitants and the figure for Iowa was 11.49 per 1,000 inhabitants. Source: the U.S. Census Bureau.

Highest16.72Davis County
Median10.8699 counties
Iowa11.49History

Top 40 counties, 2022

CSVChart (SVG)

Davis CountyDavis County: 16.72 per 1,000 inhabitants16.72Sioux CountySioux County: 15.2 per 1,000 inhabitants15.2O'Brien CountyO'Brien County: 14.64 per 1,000 inhabitants14.64Lyon CountyLyon County: 14.54 per 1,000 inhabitants14.54Van Buren CountyVan Buren County: 14.33 per 1,000 inhabitants14.33Allamakee CountyAllamakee County: 14.32 per 1,000 inhabitants14.32Crawford CountyCrawford County: 14.14 per 1,000 inhabitants14.14Clarke CountyClarke County: 13.89 per 1,000 inhabitants13.89Buena Vista CountyBuena Vista County: 13.76 per 1,000 inhabitants13.76Lucas CountyLucas County: 13.75 per 1,000 inhabitants13.75Wayne CountyWayne County: 13.69 per 1,000 inhabitants13.69Hamilton CountyHamilton County: 13.65 per 1,000 inhabitants13.65Woodbury CountyWoodbury County: 13.47 per 1,000 inhabitants13.47Wapello CountyWapello County: 13.16 per 1,000 inhabitants13.16Dallas CountyDallas County: 13.07 per 1,000 inhabitants13.07Polk CountyPolk County: 13.03 per 1,000 inhabitants13.03Humboldt CountyHumboldt County: 12.72 per 1,000 inhabitants12.72Wright CountyWright County: 12.44 per 1,000 inhabitants12.44Adams CountyAdams County: 12.43 per 1,000 inhabitants12.43Black Hawk CountyBlack Hawk County: 12.41 per 1,000 inhabitants12.41Mitchell CountyMitchell County: 12.31 per 1,000 inhabitants12.31Buchanan CountyBuchanan County: 12.31 per 1,000 inhabitants12.31Grundy CountyGrundy County: 12.29 per 1,000 inhabitants12.29Clinton CountyClinton County: 12.18 per 1,000 inhabitants12.18Franklin CountyFranklin County: 12.18 per 1,000 inhabitants12.18Chickasaw CountyChickasaw County: 12.09 per 1,000 inhabitants12.09Howard CountyHoward County: 11.99 per 1,000 inhabitants11.99Madison CountyMadison County: 11.99 per 1,000 inhabitants11.99Carroll CountyCarroll County: 11.96 per 1,000 inhabitants11.96Marshall CountyMarshall County: 11.76 per 1,000 inhabitants11.76Butler CountyButler County: 11.67 per 1,000 inhabitants11.67Adair CountyAdair County: 11.6 per 1,000 inhabitants11.6Washington CountyWashington County: 11.58 per 1,000 inhabitants11.58Hancock CountyHancock County: 11.43 per 1,000 inhabitants11.43Taylor CountyTaylor County: 11.42 per 1,000 inhabitants11.42Sac CountySac County: 11.42 per 1,000 inhabitants11.42Dubuque CountyDubuque County: 11.41 per 1,000 inhabitants11.41Linn CountyLinn County: 11.29 per 1,000 inhabitants11.29Plymouth CountyPlymouth County: 11.27 per 1,000 inhabitants11.27Iowa CountyIowa County: 11.23 per 1,000 inhabitants11.23
per 1,000 inhabitants. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2022
per 1,000 inhabitants
Change on 2021
1Davis County Estimated16.72-0.9 pts
2Sioux County Estimated15.2+1.62 pts
3O'Brien County Estimated14.64+2.09 pts
4Lyon County Estimated14.54+1.18 pts
5Van Buren County Estimated14.33+1.07 pts
6Allamakee County Estimated14.32+0.84 pts
7Crawford County Estimated14.14+1.07 pts
8Clarke County Estimated13.89+1.57 pts
9Buena Vista County Estimated13.76-1.1 pts
10Lucas County Estimated13.75+1.3 pts
11Wayne County Estimated13.69+0.19 pts
12Hamilton County Estimated13.65+3.41 pts
13Woodbury County Estimated13.47+0.37 pts
14Wapello County Estimated13.16+0.47 pts
15Dallas County Estimated13.07+0.02 pts
16Polk County Estimated13.03+0.3 pts
17Humboldt County Estimated12.72+1.39 pts
18Wright County Estimated12.44+0.78 pts
19Adams County Estimated12.43+0.73 pts
20Black Hawk County Estimated12.41+0.12 pts
21Mitchell County Estimated12.31+0.31 pts
22Buchanan County Estimated12.31-0.95 pts
23Grundy County Estimated12.29+2.41 pts
24Clinton County Estimated12.18+1.44 pts
25Franklin County Estimated12.18-2.47 pts
26Chickasaw County Estimated12.09+1.62 pts
27Howard County Estimated11.99-1.58 pts
28Madison County Estimated11.99+1.46 pts
29Carroll County Estimated11.96+1.06 pts
30Marshall County Estimated11.76-0.11 pts
31Butler County Estimated11.67+2.61 pts
32Adair County Estimated11.6+0.42 pts
33Washington County Estimated11.58-2.26 pts
34Hancock County Estimated11.43+0.05 pts
35Taylor County Estimated11.42+0.68 pts
36Sac County Estimated11.42+0.48 pts
37Dubuque County Estimated11.41+0.63 pts
38Linn County Estimated11.29+0.29 pts
39Plymouth County Estimated11.27-0.16 pts
40Iowa County Estimated11.23+1.25 pts
41Pocahontas County Estimated11.19+0.99 pts
42Scott County Estimated11.13+0.49 pts
43Tama County Estimated11.06-0.73 pts
44Delaware County Estimated11.04-0.44 pts
45Fayette County Estimated11.03+1.64 pts
46Warren County Estimated11.01+0.23 pts
47Worth County Estimated11.01+1.02 pts
48Audubon County Estimated10.88+1.52 pts
49Des Moines County Estimated10.86+0.5 pts
50Webster County Estimated10.86-0.23 pts
51Louisa County Estimated10.85+1.95 pts
52Clayton County Estimated10.85-0.48 pts
53Palo Alto County Estimated10.84-2.55 pts
54Cherokee County Estimated10.77-0.53 pts
55Johnson County Estimated10.7+0.12 pts
56Muscatine County Estimated10.66+0.17 pts
57Harrison County Estimated10.65+0.25 pts
58Jackson County Estimated10.64+0.03 pts
59Kossuth County Estimated10.62-0.64 pts
60Osceola County Estimated10.61-0.05 pts
61Mahaska County Estimated10.61-0.22 pts
62Fremont County Estimated10.56+1.75 pts
63Benton County Estimated10.49+0.08 pts
64Pottawattamie County Estimated10.45+0.18 pts
65Monona County Estimated10.39-1.37 pts
66Lee County Estimated10.39+0.03 pts
67Cerro Gordo County Estimated10.36+0.61 pts
68Appanoose County Estimated10.33-0.26 pts
69Monroe County Estimated10.32+0.57 pts
70Decatur County Estimated10.25-0.7 pts
71Emmet County Estimated10.25+0.5 pts
72Jasper County Estimated10.23-0.02 pts
73Calhoun County Estimated10.19+2.51 pts
74Mills County Estimated10.12+0.71 pts
75Cass County Estimated10.07+0.23 pts
76Shelby County Estimated10.05+2.04 pts
77Ida County Estimated9.97-0.9 pts
78Poweshiek County Estimated9.95+0.08 pts
79Keokuk County Estimated9.91+0.96 pts
80Boone County Estimated9.82-0.01 pts
81Bremer County Estimated9.8+0.35 pts
82Guthrie County Estimated9.68+1.76 pts
83Montgomery County Estimated9.65-0.52 pts
84Marion County Estimated9.46-1.34 pts
85Greene County Estimated9.41-0.09 pts
86Winnebago County Estimated9.39-0 pts
87Winneshiek County Estimated9.39+0.03 pts
88Clay County Estimated9.34-1.09 pts
89Jones County Estimated9.33-0.26 pts
90Henry County Estimated9.29+0.53 pts
91Floyd County Estimated9.16-1.53 pts
92Cedar County Estimated9.14+0.04 pts
93Hardin County Estimated8.86+0.88 pts
94Ringgold County Estimated8.38-2.19 pts
95Story County Estimated8.36+0.54 pts
96Page County Estimated8.29-0.84 pts
97Jefferson County Estimated8.29-1.37 pts
98Union County Estimated8.18-1.66 pts
99Dickinson County Estimated8.18-1.47 pts

Other periods

About this ranking

Estimated live births from July 1 of the previous year through June 30 of the reported year per 1,000 residents, using the average of the population estimates at the two July 1 endpoints.

Published Census population estimates rate. The year identifies the end of the July-to-June period. These estimates can be revised and differ from calendar-year birth rates.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Population Estimates Program: birth rate, July 1 of the previous year to June 30 of the reported year, nation, states and counties. https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

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Rank Counties in Iowa by birth rate (July to June) using official data, and cite the source.
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Questions

Which county has the highest birth rate (July to June)?

Davis County, with 16.72 per 1,000 inhabitants in 2022, according to the U.S. Census Bureau.

Which county has the lowest birth rate (July to June)?

Dickinson County, with 8.18 per 1,000 inhabitants in 2022.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program: birth rate, July 1 of the previous year to June 30 of the reported year, nation, states and counties. Retrieved 2026-10-08.

Crude birth rate, July to June: other rankings

Counties in Iowa: more rankings