Data / Rankings / School enrolment, children aged 3 and 4 / Counties in Iowa

Counties in Iowa by school enrolment, children aged 3 and 4

Winneshiek County had the highest school enrolment, children aged 3 and 4 of 99 counties in 2022, at 83.3%. Decatur County had the lowest, at 16.9%. The median was 43.2% and the figure for Iowa was 43.2%. Source: the U.S. Census Bureau.

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Highest83.3Winneshiek County
Lowest16.9Decatur County
Median43.299 counties
Iowa43.2History

Map of counties, 2022

Adair County: 38.7 %Adams County: 36.8 %Allamakee County: 30 %Appanoose County: 30 %Audubon County: 28.9 %Benton County: 47.1 %Black Hawk County: 43.3 %Boone County: 34.9 %Bremer County: 51.6 %Buchanan County: 48.8 %Buena Vista County: 49.8 %Butler County: 42.2 %Calhoun County: 35.3 %Carroll County: 28 %Cass County: 76.3 %Cedar County: 33.5 %Cerro Gordo County: 38.6 %Cherokee County: 44.1 %Chickasaw County: 55.4 %Clarke County: 42.4 %Clay County: 52.2 %Clayton County: 45 %Clinton County: 22.4 %Crawford County: 37.9 %Dallas County: 47.3 %Davis County: 49.5 %Decatur County: 16.9 %Delaware County: 34.2 %Des Moines County: 38.4 %Dickinson County: 26.3 %Dubuque County: 44.8 %Emmet County: 45 %Fayette County: 53.2 %Floyd County: 54.6 %Franklin County: 56.6 %Fremont County: 55.7 %Greene County: 65.9 %Grundy County: 61.4 %Guthrie County: 58.2 %Hamilton County: 51.4 %Hancock County: 25.1 %Hardin County: 36.5 %Harrison County: 55.6 %Henry County: 54.6 %Howard County: 47.8 %Humboldt County: 41.9 %Ida County: 33.1 %Iowa County: 47.1 %Jackson County: 61.8 %Jasper County: 44.2 %Jefferson County: 39.4 %Johnson County: 43.2 %Jones County: 39.2 %Keokuk County: 73.8 %Kossuth County: 43.9 %Lee County: 39 %Linn County: 49.4 %Louisa County: 30 %Lucas County: 61.2 %Lyon County: 22.4 %Madison County: 30.5 %Mahaska County: 53.7 %Marion County: 33.6 %Marshall County: 42.2 %Mills County: 46.4 %Mitchell County: 20.2 %Monona County: 51.7 %Monroe County: 24.8 %Montgomery County: 33.2 %Muscatine County: 56.9 %O'Brien County: 64.8 %Osceola County: 48.6 %Page County: 36.5 %Palo Alto County: 53 %Plymouth County: 52.6 %Pocahontas County: 56.5 %Polk County: 38.6 %Pottawattamie County: 35.6 %Poweshiek County: 36.4 %Ringgold County: 67.9 %Sac County: 40.2 %Scott County: 47.4 %Shelby County: 49.4 %Sioux County: 41.9 %Story County: 37.2 %Tama County: 51.7 %Taylor County: 41.9 %Union County: 71.1 %Van Buren County: 35.5 %Wapello County: 41.4 %Warren County: 44.3 %Washington County: 42.1 %Wayne County: 42.4 %Webster County: 34 %Winnebago County: 47.3 %Winneshiek County: 83.3 %Woodbury County: 40.2 %Worth County: 36.9 %Wright County: 33.6 %
  • Under 34
  • 34 to 39
  • 39 to 43
  • 43 to 49
  • 49 to 55
  • 55 and over
%, 2022. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2022

Winneshiek County: 83.3 %Winneshiek County83.3Cass County: 76.3 %Cass County76.3Keokuk County: 73.8 %Keokuk County73.8Union County: 71.1 %Union County71.1Ringgold County: 67.9 %Ringgold County67.9Greene County: 65.9 %Greene County65.9O'Brien County: 64.8 %O'Brien County64.8Jackson County: 61.8 %Jackson County61.8Grundy County: 61.4 %Grundy County61.4Lucas County: 61.2 %Lucas County61.2Guthrie County: 58.2 %Guthrie County58.2Muscatine County: 56.9 %Muscatine County56.9Franklin County: 56.6 %Franklin County56.6Pocahontas County: 56.5 %Pocahontas County56.5Fremont County: 55.7 %Fremont County55.7Harrison County: 55.6 %Harrison County55.6Chickasaw County: 55.4 %Chickasaw County55.4Henry County: 54.6 %Henry County54.6Floyd County: 54.6 %Floyd County54.6Mahaska County: 53.7 %Mahaska County53.7Fayette County: 53.2 %Fayette County53.2Palo Alto County: 53 %Palo Alto County53Plymouth County: 52.6 %Plymouth County52.6Clay County: 52.2 %Clay County52.2Monona County: 51.7 %Monona County51.7Tama County: 51.7 %Tama County51.7Bremer County: 51.6 %Bremer County51.6Hamilton County: 51.4 %Hamilton County51.4Buena Vista County: 49.8 %Buena Vista County49.8Davis County: 49.5 %Davis County49.5Linn County: 49.4 %Linn County49.4Shelby County: 49.4 %Shelby County49.4Buchanan County: 48.8 %Buchanan County48.8Osceola County: 48.6 %Osceola County48.6Howard County: 47.8 %Howard County47.8Scott County: 47.4 %Scott County47.4Dallas County: 47.3 %Dallas County47.3Winnebago County: 47.3 %Winnebago County47.3Iowa County: 47.1 %Iowa County47.1Benton County: 47.1 %Benton County47.1Winneshiek County: 83.3 %Winneshiek County83.3Cass County: 76.3 %Cass County76.3Keokuk County: 73.8 %Keokuk County73.8Union County: 71.1 %Union County71.1Ringgold County: 67.9 %Ringgold County67.9Greene County: 65.9 %Greene County65.9O'Brien County: 64.8 %O'Brien County64.8Jackson County: 61.8 %Jackson County61.8Grundy County: 61.4 %Grundy County61.4Lucas County: 61.2 %Lucas County61.2Guthrie County: 58.2 %Guthrie County58.2Muscatine County: 56.9 %Muscatine County56.9Franklin County: 56.6 %Franklin County56.6Pocahontas County: 56.5 %Pocahontas County56.5Fremont County: 55.7 %Fremont County55.7Harrison County: 55.6 %Harrison County55.6Chickasaw County: 55.4 %Chickasaw County55.4Henry County: 54.6 %Henry County54.6Floyd County: 54.6 %Floyd County54.6Mahaska County: 53.7 %Mahaska County53.7Fayette County: 53.2 %Fayette County53.2Palo Alto County: 53 %Palo Alto County53Plymouth County: 52.6 %Plymouth County52.6Clay County: 52.2 %Clay County52.2Monona County: 51.7 %Monona County51.7Tama County: 51.7 %Tama County51.7Bremer County: 51.6 %Bremer County51.6Hamilton County: 51.4 %Hamilton County51.4Buena Vista County: 49.8 %Buena Vista County49.8Davis County: 49.5 %Davis County49.5Linn County: 49.4 %Linn County49.4Shelby County: 49.4 %Shelby County49.4Buchanan County: 48.8 %Buchanan County48.8Osceola County: 48.6 %Osceola County48.6Howard County: 47.8 %Howard County47.8Scott County: 47.4 %Scott County47.4Dallas County: 47.3 %Dallas County47.3Winnebago County: 47.3 %Winnebago County47.3Iowa County: 47.1 %Iowa County47.1Benton County: 47.1 %Benton County47.1
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2022 (%)Change on 2021
1Winneshiek County83.3+8.3 pts
2Cass County76.3+3 pts
3Keokuk County73.8+4 pts
4Union County71.1+11.9 pts
5Ringgold County67.9+5.4 pts
6Greene County65.9-12.3 pts
7O'Brien County64.8-1.3 pts
8Jackson County61.8-2.9 pts
9Grundy County61.4-2.4 pts
10Lucas County61.2-3.1 pts
11Guthrie County58.2+3.7 pts
12Muscatine County56.9+3.2 pts
13Franklin County56.6-2.8 pts
14Pocahontas County56.5+9 pts
15Fremont County55.7+3.6 pts
16Harrison County55.6-4.3 pts
17Chickasaw County55.4-6.2 pts
18Henry County54.6+12.5 pts
19Floyd County54.6-12.1 pts
20Mahaska County53.7+2.9 pts
21Fayette County53.2-8.3 pts
22Palo Alto County53+1.6 pts
23Plymouth County52.6-2.2 pts
24Clay County52.2-10.2 pts
25Monona County51.7-10.9 pts
26Tama County51.7+0.1 pts
27Bremer County51.6-11.5 pts
28Hamilton County51.4-1.1 pts
29Buena Vista County49.8+0.9 pts
30Davis County49.5+1.3 pts
31Linn County49.4+2.2 pts
32Shelby County49.4+4.7 pts
33Buchanan County48.8-17.7 pts
34Osceola County48.6+1 pts
35Howard County47.8+4.7 pts
36Scott County47.4+0.5 pts
37Dallas County47.3+0.5 pts
38Winnebago County47.3-3.5 pts
39Iowa County47.1-11.7 pts
40Benton County47.1-2.4 pts
41Mills County46.4-7.1 pts
42Emmet County45+15.7 pts
43Clayton County45+10.8 pts
44Dubuque County44.8-0.9 pts
45Warren County44.3-1 pts
46Jasper County44.2-1.4 pts
47Cherokee County44.1+1.2 pts
48Kossuth County43.9-4.5 pts
49Black Hawk County43.3+0.6 pts
50Johnson County43.2-3.6 pts
51Wayne County42.4+1.5 pts
52Clarke County42.4-7.3 pts
53Butler County42.2-7.2 pts
54Marshall County42.2+9.3 pts
55Washington County42.1+0.1 pts
56Taylor County41.9+1.6 pts
57Humboldt County41.9-11.3 pts
58Sioux County41.9-4.7 pts
59Wapello County41.4+1.8 pts
60Woodbury County40.2+2.1 pts
61Sac County40.2-7.6 pts
62Jefferson County39.4+13.4 pts
63Jones County39.2-15.3 pts
64Lee County39-7.7 pts
65Adair County38.7+3.9 pts
66Polk County38.6+1.5 pts
67Cerro Gordo County38.6-10.9 pts
68Des Moines County38.4-6.2 pts
69Crawford County37.9-0.2 pts
70Story County37.2+1.4 pts
71Worth County36.9-2.3 pts
72Adams County36.8+22.2 pts
73Page County36.5+6.7 pts
74Hardin County36.5+5.9 pts
75Poweshiek County36.4-0.2 pts
76Pottawattamie County35.6+3 pts
77Van Buren County35.5-6.8 pts
78Calhoun County35.3-5.4 pts
79Boone County34.9+3.4 pts
80Delaware County34.2-14.3 pts
81Webster County34+2.5 pts
82Marion County33.6+6.4 pts
83Wright County33.6+0.7 pts
84Cedar County33.5+6.3 pts
85Montgomery County33.2-5.8 pts
86Ida County33.1-11.9 pts
87Madison County30.5+5.8 pts
88Appanoose County30-0.6 pts
89Allamakee County30-8 pts
89Louisa County30-6.1 pts
91Audubon County28.9+3.3 pts
92Carroll County28+2.7 pts
93Dickinson County26.3-5.1 pts
94Hancock County25.1-3.3 pts
95Monroe County24.8-8.2 pts
96Lyon County22.4+1.3 pts
97Clinton County22.4-17.8 pts
98Mitchell County20.2-19.8 pts
99Decatur County16.9-3.6 pts

Other periods

About this ranking

Children aged 3 and 4 enrolled in public or private school, including nursery school and preschool, at any time in the three months before the interview, as a percentage of all children aged 3 and 4. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

Reported by households, so it includes private nursery schools. Small counties have only a few dozen children in the sample, and their rates can swing widely between periods.

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. American Community Survey 5-year estimates, table B14003: children aged 3 and 4 enrolled in public or private school as a percentage of all children aged 3 and 4, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b14003.dat. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). American Community Survey 5-year estimates, table B14003: children aged 3 and 4 enrolled in public or private school as a percentage of all children aged 3 and 4, calculated with stored inputs (Counties in Iowa by school enrolment, children aged 3 and 4, 2022) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b14003.dat

MLA 9

American Community Survey 5-year estimates, table B14003: children aged 3 and 4 enrolled in public or private school as a percentage of all children aged 3 and 4, calculated with stored inputs, Counties in Iowa by school enrolment, children aged 3 and 4, 2022. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b14003.dat. Invokely, https://invokely.ai/rankings/preschool-enrollment-ages-3-4/iowa-counties?period=2022. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B14003: children aged 3 and 4 enrolled in public or private school as a percentage of all children aged 3 and 4, calculated with stored inputs. Counties in Iowa by school enrolment, children aged 3 and 4, 2022. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b14003.dat. Also distributed by Invokely, https://invokely.ai/rankings/preschool-enrollment-ages-3-4/iowa-counties?period=2022.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B14003: children aged 3 and 4 enrolled in public or private school as a percentage of all children aged 3 and 4, calculated with stored inputs, Counties in Iowa by school enrolment, children aged 3 and 4, 2022 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b14003.dat, via Invokely: https://invokely.ai/rankings/preschool-enrollment-ages-3-4/iowa-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_iowa_by_2022,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B14003: children aged 3 and 4 enrolled in public or private school as a percentage of all children aged 3 and 4, calculated with stored inputs: Counties in Iowa by school enrolment, children aged 3 and 4, 2022}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b14003.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/preschool-enrollment-ages-3-4/iowa-counties?period=2022. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B14003: children aged 3 and 4 enrolled in public or private school as a percentage of all children aged 3 and 4, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b14003.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B14003: children aged 3 and 4 enrolled in public or private school as a percentage of all children aged 3 and 4, calculated with stored inputs: Counties in Iowa by school enrolment, children aged 3 and 4, 2022
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b14003.dat
L2  - https://invokely.ai/rankings/preschool-enrollment-ages-3-4/iowa-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/preschool-enrollment-ages-3-4/iowa-counties?period=2022.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B14003: children aged 3 and 4 enrolled in public or private school as a percentage of all children aged 3 and 4, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b14003.dat. Retrieved 2026-10-12.
ER  -
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Rank Counties in Iowa by school enrolment, children aged 3 and 4 using official data, and cite the source.
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Questions

Which county has the highest school enrolment, children aged 3 and 4?

Winneshiek County, with 83.3% in 2022, according to the U.S. Census Bureau.

Which county has the lowest school enrolment, children aged 3 and 4?

Decatur County, with 16.9% 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, American Community Survey 5-year estimates, table B14003: children aged 3 and 4 enrolled in public or private school as a percentage of all children aged 3 and 4, calculated with stored inputs. Retrieved 2026-10-12.

School enrolment, children aged 3 and 4: other rankings

Counties in Iowa: more rankings