Counties in Iowa by births (July to June)

Name: Counties in Iowa by births (July to June), 2023
Creator: U.S. Census Bureau
License: Public domain (US federal government work, citation requested)

Polk County had the highest births (July to June) of 99 counties in 2023, at 6,288. Adams County had the lowest, at 37. The median was 170 and the figure for Iowa was 36,415. Source: the U.S. Census Bureau.

Highest6,288Polk County

Lowest37Adams County

Median17099 counties

Iowa36,415History

Top 40 counties, 2023

CSV Chart (SVG)

count. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

Rank	Counties	2023 count	Change on 2022
1	Polk County Estimated	6,288	-3.4%
2	Linn County Estimated	2,490	-3.8%
3	Scott County Estimated	1,803	-6.9%
4	Johnson County Estimated	1,700	+1.9%
5	Black Hawk County Estimated	1,569	-3%
6	Woodbury County Estimated	1,453	+2%
7	Dallas County Estimated	1,365	-1.6%
8	Dubuque County Estimated	1,106	-1.9%
9	Pottawattamie County Estimated	1,010	+3.6%
10	Story County Estimated	827	-0.8%
11	Warren County Estimated	636	+7.1%
12	Clinton County Estimated	529	-6.4%
13	Sioux County Estimated	490	-10.7%
14	Marshall County Estimated	488	+4.1%
15	Muscatine County Estimated	452	-0.4%
16	Webster County Estimated	446	+11.2%
17	Wapello County Estimated	439	-5.2%
18	Cerro Gordo County Estimated	420	-4.8%
19	Des Moines County Estimated	407	-2.4%
20	Jasper County Estimated	405	+4.4%
21	Marion County Estimated	345	+8.8%
22	Lee County Estimated	338	-1.5%
23	Plymouth County Estimated	301	+3.8%
24	Buena Vista County Estimated	285	0%
25	Washington County Estimated	279	+6.9%
26	Buchanan County Estimated	269	+5.5%
27	Boone County Estimated	262	0%
28	Bremer County Estimated	257	+4%
29	Benton County Estimated	251	-7%
30	Mahaska County Estimated	232	-0.4%
31	Carroll County Estimated	230	-6.9%
32	Crawford County Estimated	228	-0.4%
33	Jackson County Estimated	214	+3.9%
34	Fayette County Estimated	213	0%
35	Delaware County Estimated	210	+8.2%
36	Wright County Estimated	205	+28.9%
37	Henry County Estimated	201	+6.3%
37	Tama County Estimated	201	+7.5%
39	Clayton County Estimated	200	+8.1%
40	Iowa County Estimated	193	+3.8%
41	Hamilton County Estimated	189	-6.9%
42	Clay County Estimated	186	+20.8%
43	Floyd County Estimated	184	+30.5%
44	Winneshiek County Estimated	182	-2.7%
45	Jones County Estimated	181	-7.2%
46	O'Brien County Estimated	179	-13.1%
47	Harrison County Estimated	175	+12.2%
48	Hardin County Estimated	173	+16.9%
49	Dickinson County Estimated	171	+16.3%
50	Lyon County Estimated	170	-3.4%
50	Poweshiek County Estimated	170	-8.1%
52	Madison County Estimated	168	-17.2%
53	Kossuth County Estimated	167	+8.4%
54	Allamakee County Estimated	165	-17.9%
55	Cedar County Estimated	156	-7.1%
56	Davis County Estimated	148	-3.3%
57	Butler County Estimated	139	-16.8%
58	Jefferson County Estimated	131	+0.8%
59	Mills County Estimated	130	-11.6%
60	Cass County Estimated	129	-2.3%
60	Shelby County Estimated	129	+9.3%
62	Palo Alto County Estimated	128	+33.3%
63	Franklin County Estimated	125	+3.3%
63	Union County Estimated	125	+27.6%
65	Appanoose County Estimated	123	-2.4%
65	Chickasaw County Estimated	123	-14%
65	Grundy County Estimated	123	-19.1%
65	Mitchell County Estimated	123	-5.4%
69	Page County Estimated	122	-3.2%
70	Sac County Estimated	120	+8.1%
71	Hancock County Estimated	118	-3.3%
72	Emmet County Estimated	117	+23.2%
72	Howard County Estimated	117	+2.6%
74	Cherokee County Estimated	115	-7.3%
74	Keokuk County Estimated	115	+17.3%
76	Louisa County Estimated	112	-3.4%
77	Clarke County Estimated	110	-18.5%
78	Montgomery County Estimated	108	+9.1%
79	Lucas County Estimated	106	-11.7%
80	Humboldt County Estimated	105	-13.9%
81	Wayne County Estimated	99	+11.2%
82	Calhoun County Estimated	97	-3%
83	Decatur County Estimated	93	+16.3%
83	Monona County Estimated	93	+4.5%
85	Guthrie County Estimated	91	-11.7%
86	Winnebago County Estimated	90	-10%
87	Greene County Estimated	89	+8.5%
88	Adair County Estimated	87	0%
89	Van Buren County Estimated	86	-17.3%
90	Monroe County Estimated	84	+7.7%
91	Taylor County Estimated	80	+19.4%
91	Worth County Estimated	80	-1.2%
93	Ida County Estimated	77	+11.6%
93	Pocahontas County Estimated	77	-2.5%
95	Osceola County Estimated	75	+15.4%
96	Fremont County Estimated	73	+5.8%
97	Audubon County Estimated	65	+6.6%
98	Ringgold County Estimated	48	+23.1%
99	Adams County Estimated	37	-17.8%

Other periods

2025
2024
2023
2022
2021

About this ranking

Estimated live births to resident mothers from July 1 of the previous year through June 30 of the reported year.

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

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: births, 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.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

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

rank_places {"indicator":"births_july_june","level":"province","within":"Iowa","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=births_july_june&level=province&within=Iowa&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

Which county has the highest births (July to June)?

Polk County, with 6,288 in 2023, according to the U.S. Census Bureau.

Which county has the lowest births (July to June)?

Adams County, with 37 in 2023.

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: births, July 1 of the previous year to June 30 of the reported year, nation, states and counties. Retrieved 2026-10-08.