Data / Rankings / Crude birth rate, July to June / Counties in Iowa

Counties in Iowa by birth rate (July to June), 2025

Davis County had the highest birth rate (July to June) of 99 counties in 2025, at 18.47 per 1,000 inhabitants. Page County had the lowest, at 7.7 per 1,000 inhabitants. The median was 10.91 per 1,000 inhabitants and the figure for Iowa was 11.28 per 1,000 inhabitants. Source: the U.S. Census Bureau.

Highest18.47Davis County
Lowest7.7Page County
Median10.9199 counties
Iowa11.28History

Top 40 counties, 2025

CSVChart (SVG)

Davis CountyDavis County: 18.47 per 1,000 inhabitants18.47Wayne CountyWayne County: 16.75 per 1,000 inhabitants16.75Wright CountyWright County: 15.6 per 1,000 inhabitants15.6Hamilton CountyHamilton County: 13.83 per 1,000 inhabitants13.83Clarke CountyClarke County: 13.78 per 1,000 inhabitants13.78Buchanan CountyBuchanan County: 13.7 per 1,000 inhabitants13.7Palo Alto CountyPalo Alto County: 13.6 per 1,000 inhabitants13.6Wapello CountyWapello County: 13.45 per 1,000 inhabitants13.45Buena Vista CountyBuena Vista County: 13.43 per 1,000 inhabitants13.43Washington CountyWashington County: 13.21 per 1,000 inhabitants13.21Woodbury CountyWoodbury County: 13.13 per 1,000 inhabitants13.13Kossuth CountyKossuth County: 12.85 per 1,000 inhabitants12.85Howard CountyHoward County: 12.84 per 1,000 inhabitants12.84Decatur CountyDecatur County: 12.79 per 1,000 inhabitants12.79Crawford CountyCrawford County: 12.54 per 1,000 inhabitants12.54O'Brien CountyO'Brien County: 12.53 per 1,000 inhabitants12.53Sioux CountySioux County: 12.51 per 1,000 inhabitants12.51Tama CountyTama County: 12.5 per 1,000 inhabitants12.5Polk CountyPolk County: 12.47 per 1,000 inhabitants12.47Lucas CountyLucas County: 12.45 per 1,000 inhabitants12.45Webster CountyWebster County: 12.44 per 1,000 inhabitants12.44Sac CountySac County: 12.33 per 1,000 inhabitants12.33Marshall CountyMarshall County: 12.32 per 1,000 inhabitants12.32Van Buren CountyVan Buren County: 12.29 per 1,000 inhabitants12.29Black Hawk CountyBlack Hawk County: 12.24 per 1,000 inhabitants12.24Dallas CountyDallas County: 11.99 per 1,000 inhabitants11.99Franklin CountyFranklin County: 11.99 per 1,000 inhabitants11.99Chickasaw CountyChickasaw County: 11.97 per 1,000 inhabitants11.97Audubon CountyAudubon County: 11.94 per 1,000 inhabitants11.94Fayette CountyFayette County: 11.74 per 1,000 inhabitants11.74Iowa CountyIowa County: 11.58 per 1,000 inhabitants11.58Floyd CountyFloyd County: 11.54 per 1,000 inhabitants11.54Emmet CountyEmmet County: 11.51 per 1,000 inhabitants11.51Jasper CountyJasper County: 11.51 per 1,000 inhabitants11.51Taylor CountyTaylor County: 11.47 per 1,000 inhabitants11.47Adair CountyAdair County: 11.43 per 1,000 inhabitants11.43Linn CountyLinn County: 11.42 per 1,000 inhabitants11.42Dubuque CountyDubuque County: 11.41 per 1,000 inhabitants11.41Grundy CountyGrundy County: 11.4 per 1,000 inhabitants11.4Worth CountyWorth County: 11.34 per 1,000 inhabitants11.34
per 1,000 inhabitants. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2025
per 1,000 inhabitants		Change on 2024
1Davis County Estimated18.47-0.29 pts
2Wayne County Estimated16.75-0.24 pts
3Wright County Estimated15.6+0.25 pts
4Hamilton County Estimated13.83+0.12 pts
5Clarke County Estimated13.78+0.05 pts
6Buchanan County Estimated13.7-0.1 pts
7Palo Alto County Estimated13.6-0.27 pts
8Wapello County Estimated13.45+0.29 pts
9Buena Vista County Estimated13.43+0.46 pts
10Washington County Estimated13.21+0.15 pts
11Woodbury County Estimated13.13+0.02 pts
12Kossuth County Estimated12.85+0.19 pts
13Howard County Estimated12.84+0.31 pts
14Decatur County Estimated12.79+0.49 pts
15Crawford County Estimated12.54-0.04 pts
16O'Brien County Estimated12.53-0.22 pts
17Sioux County Estimated12.51-0.68 pts
18Tama County Estimated12.5+0.13 pts
19Polk County Estimated12.47+0.03 pts
20Lucas County Estimated12.45+0.4 pts
21Webster County Estimated12.44+0.22 pts
22Sac County Estimated12.33-0.1 pts
23Marshall County Estimated12.32+0.2 pts
24Van Buren County Estimated12.29-0.31 pts
25Black Hawk County Estimated12.24+0.28 pts
26Dallas County Estimated11.99-0.25 pts
27Franklin County Estimated11.99+0.31 pts
28Chickasaw County Estimated11.97-0.06 pts
29Audubon County Estimated11.94+0.02 pts
30Fayette County Estimated11.74+0.47 pts
31Iowa County Estimated11.58+0.1 pts
32Floyd County Estimated11.54+0.02 pts
33Emmet County Estimated11.51-0.1 pts
34Jasper County Estimated11.51+0.08 pts
35Taylor County Estimated11.47+0.09 pts
36Adair County Estimated11.43+0.15 pts
37Linn County Estimated11.42+0.3 pts
38Dubuque County Estimated11.41+0.13 pts
39Grundy County Estimated11.4+0.17 pts
40Worth County Estimated11.34-0.28 pts
41Delaware County Estimated11.28-0.26 pts
42Monroe County Estimated11.22-0.34 pts
43Plymouth County Estimated11.17+0.08 pts
44Benton County Estimated11.15+0.18 pts
45Lee County Estimated11.14+0.06 pts
46Cherokee County Estimated11.1+0.37 pts
47Warren County Estimated11.02-0.09 pts
48Allamakee County Estimated10.97-0.31 pts
49Monona County Estimated10.92-0.12 pts
50Clinton County Estimated10.91+0.1 pts
51Muscatine County Estimated10.9+0.13 pts
52Carroll County Estimated10.9+0.06 pts
53Mahaska County Estimated10.82+0.11 pts
54Johnson County Estimated10.78+0.08 pts
55Lyon County Estimated10.74-1.15 pts
56Scott County Estimated10.74+0.05 pts
57Humboldt County Estimated10.68+0.48 pts
58Pocahontas County Estimated10.63+0.13 pts
59Appanoose County Estimated10.5+0.1 pts
60Ida County Estimated10.48+0.17 pts
61Hardin County Estimated10.39+0.14 pts
62Union County Estimated10.36-0.14 pts
63Osceola County Estimated10.34-0.14 pts
64Bremer County Estimated10.34+0.09 pts
65Jackson County Estimated10.3-0.04 pts
66Keokuk County Estimated10.2-0.03 pts
67Des Moines County Estimated10.180 pts
68Mitchell County Estimated10.17-0.52 pts
69Greene County Estimated10.17-0.03 pts
70Hancock County Estimated10.12+0.05 pts
71Butler County Estimated10.02+0.12 pts
72Marion County Estimated10.01-0.05 pts
73Cass County Estimated9.94-0.17 pts
74Jones County Estimated9.9+0.3 pts
75Cedar County Estimated9.88+0.04 pts
76Montgomery County Estimated9.87-0.72 pts
77Clayton County Estimated9.81-0.6 pts
78Harrison County Estimated9.79-0.68 pts
79Shelby County Estimated9.63-0.13 pts
80Ringgold County Estimated9.47+0.02 pts
81Boone County Estimated9.45+0.04 pts
82Louisa County Estimated9.44+0.14 pts
83Adams County Estimated9.42-0.36 pts
84Cerro Gordo County Estimated9.4+0.03 pts
85Clay County Estimated9.35+0.09 pts
86Calhoun County Estimated9.26-0 pts
87Madison County Estimated9.12-0.3 pts
88Henry County Estimated9.09-0.04 pts
89Poweshiek County Estimated9.08+0.19 pts
90Fremont County Estimated9.07-0.81 pts
91Pottawattamie County Estimated9.01-0.73 pts
92Guthrie County Estimated8.94+0.07 pts
93Winneshiek County Estimated8.88-0.01 pts
94Winnebago County Estimated8.83-0.07 pts
95Jefferson County Estimated8.54+0.11 pts
96Mills County Estimated8.46-0.8 pts
97Dickinson County Estimated8.24-0.17 pts
98Story County Estimated7.94-0.05 pts
99Page County Estimated7.7-0.3 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 18.47 per 1,000 inhabitants in 2025, according to the U.S. Census Bureau.

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

Page County, with 7.7 per 1,000 inhabitants in 2025.

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