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

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

Cass County had the highest school enrolment, children aged 3 and 4 of 99 counties in 2023, at 73%. Monroe County had the lowest, at 16.2%. The median was 42.6% and the figure for Iowa was 43%. Source: the U.S. Census Bureau.

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Highest73Cass County
Lowest16.2Monroe County
Median42.699 counties
Iowa43History

Map of counties, 2023

Adair County: 41.8 %Adams County: 42.6 %Allamakee County: 29.9 %Appanoose County: 32.7 %Audubon County: 36.9 %Benton County: 50.7 %Black Hawk County: 43.1 %Boone County: 40.1 %Bremer County: 55.8 %Buchanan County: 39.8 %Buena Vista County: 49 %Butler County: 29.8 %Calhoun County: 34.2 %Carroll County: 38.6 %Cass County: 73 %Cedar County: 32.3 %Cerro Gordo County: 40 %Cherokee County: 54.9 %Chickasaw County: 48.4 %Clarke County: 38.4 %Clay County: 46.6 %Clayton County: 47.6 %Clinton County: 22.7 %Crawford County: 49.2 %Dallas County: 46.7 %Davis County: 34.8 %Decatur County: 23 %Delaware County: 33 %Des Moines County: 39.7 %Dickinson County: 37.9 %Dubuque County: 38.9 %Emmet County: 41.7 %Fayette County: 46.1 %Floyd County: 57.6 %Franklin County: 61.6 %Fremont County: 72.3 %Greene County: 69.1 %Grundy County: 68.2 %Guthrie County: 57.3 %Hamilton County: 51.6 %Hancock County: 25.4 %Hardin County: 32.8 %Harrison County: 53.2 %Henry County: 60.7 %Howard County: 43.9 %Humboldt County: 51.1 %Ida County: 30.6 %Iowa County: 53.7 %Jackson County: 62.8 %Jasper County: 41 %Jefferson County: 32.6 %Johnson County: 48.5 %Jones County: 41.3 %Keokuk County: 59.3 %Kossuth County: 49.2 %Lee County: 35.9 %Linn County: 48.5 %Louisa County: 32.9 %Lucas County: 51.5 %Lyon County: 23.1 %Madison County: 34.9 %Mahaska County: 42.7 %Marion County: 32.8 %Marshall County: 40.5 %Mills County: 59.3 %Mitchell County: 33.8 %Monona County: 53.3 %Monroe County: 16.2 %Montgomery County: 44.4 %Muscatine County: 52.5 %O'Brien County: 40.3 %Osceola County: 31.7 %Page County: 43.7 %Palo Alto County: 44.5 %Plymouth County: 49.6 %Pocahontas County: 60.1 %Polk County: 40.1 %Pottawattamie County: 36 %Poweshiek County: 30.7 %Ringgold County: 65.8 %Sac County: 38.9 %Scott County: 45.7 %Shelby County: 55.6 %Sioux County: 45.1 %Story County: 36.6 %Tama County: 46.8 %Taylor County: 46.2 %Union County: 68.7 %Van Buren County: 22.7 %Wapello County: 41 %Warren County: 44.5 %Washington County: 37.7 %Wayne County: 34.7 %Webster County: 32.8 %Winnebago County: 49.4 %Winneshiek County: 71.6 %Woodbury County: 38.2 %Worth County: 32.8 %Wright County: 40.7 %
  • Under 33
  • 33 to 39
  • 39 to 43
  • 43 to 48
  • 48 to 55
  • 55 and over
%, 2023. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2023

Cass County: 73 %Cass County73Fremont County: 72.3 %Fremont County72.3Winneshiek County: 71.6 %Winneshiek County71.6Greene County: 69.1 %Greene County69.1Union County: 68.7 %Union County68.7Grundy County: 68.2 %Grundy County68.2Ringgold County: 65.8 %Ringgold County65.8Jackson County: 62.8 %Jackson County62.8Franklin County: 61.6 %Franklin County61.6Henry County: 60.7 %Henry County60.7Pocahontas County: 60.1 %Pocahontas County60.1Keokuk County: 59.3 %Keokuk County59.3Mills County: 59.3 %Mills County59.3Floyd County: 57.6 %Floyd County57.6Guthrie County: 57.3 %Guthrie County57.3Bremer County: 55.8 %Bremer County55.8Shelby County: 55.6 %Shelby County55.6Cherokee County: 54.9 %Cherokee County54.9Iowa County: 53.7 %Iowa County53.7Monona County: 53.3 %Monona County53.3Harrison County: 53.2 %Harrison County53.2Muscatine County: 52.5 %Muscatine County52.5Hamilton County: 51.6 %Hamilton County51.6Lucas County: 51.5 %Lucas County51.5Humboldt County: 51.1 %Humboldt County51.1Benton County: 50.7 %Benton County50.7Plymouth County: 49.6 %Plymouth County49.6Winnebago County: 49.4 %Winnebago County49.4Kossuth County: 49.2 %Kossuth County49.2Crawford County: 49.2 %Crawford County49.2Buena Vista County: 49 %Buena Vista County49Johnson County: 48.5 %Johnson County48.5Linn County: 48.5 %Linn County48.5Chickasaw County: 48.4 %Chickasaw County48.4Clayton County: 47.6 %Clayton County47.6Tama County: 46.8 %Tama County46.8Dallas County: 46.7 %Dallas County46.7Clay County: 46.6 %Clay County46.6Taylor County: 46.2 %Taylor County46.2Fayette County: 46.1 %Fayette County46.1Cass County: 73 %Cass County73Fremont County: 72.3 %Fremont County72.3Winneshiek County: 71.6 %Winneshiek County71.6Greene County: 69.1 %Greene County69.1Union County: 68.7 %Union County68.7Grundy County: 68.2 %Grundy County68.2Ringgold County: 65.8 %Ringgold County65.8Jackson County: 62.8 %Jackson County62.8Franklin County: 61.6 %Franklin County61.6Henry County: 60.7 %Henry County60.7Pocahontas County: 60.1 %Pocahontas County60.1Keokuk County: 59.3 %Keokuk County59.3Mills County: 59.3 %Mills County59.3Floyd County: 57.6 %Floyd County57.6Guthrie County: 57.3 %Guthrie County57.3Bremer County: 55.8 %Bremer County55.8Shelby County: 55.6 %Shelby County55.6Cherokee County: 54.9 %Cherokee County54.9Iowa County: 53.7 %Iowa County53.7Monona County: 53.3 %Monona County53.3Harrison County: 53.2 %Harrison County53.2Muscatine County: 52.5 %Muscatine County52.5Hamilton County: 51.6 %Hamilton County51.6Lucas County: 51.5 %Lucas County51.5Humboldt County: 51.1 %Humboldt County51.1Benton County: 50.7 %Benton County50.7Plymouth County: 49.6 %Plymouth County49.6Winnebago County: 49.4 %Winnebago County49.4Kossuth County: 49.2 %Kossuth County49.2Crawford County: 49.2 %Crawford County49.2Buena Vista County: 49 %Buena Vista County49Johnson County: 48.5 %Johnson County48.5Linn County: 48.5 %Linn County48.5Chickasaw County: 48.4 %Chickasaw County48.4Clayton County: 47.6 %Clayton County47.6Tama County: 46.8 %Tama County46.8Dallas County: 46.7 %Dallas County46.7Clay County: 46.6 %Clay County46.6Taylor County: 46.2 %Taylor County46.2Fayette County: 46.1 %Fayette County46.1
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2023 (%)Change on 2022
1Cass County73-3.3 pts
2Fremont County72.3+16.6 pts
3Winneshiek County71.6-11.7 pts
4Greene County69.1+3.1 pts
5Union County68.7-2.4 pts
6Grundy County68.2+6.8 pts
7Ringgold County65.8-2.1 pts
8Jackson County62.8+0.9 pts
9Franklin County61.6+5 pts
10Henry County60.7+6 pts
11Pocahontas County60.1+3.6 pts
12Keokuk County59.3-14.5 pts
13Mills County59.3+12.9 pts
14Floyd County57.6+3 pts
15Guthrie County57.3-0.9 pts
16Bremer County55.8+4.1 pts
17Shelby County55.6+6.2 pts
18Cherokee County54.9+10.8 pts
19Iowa County53.7+6.6 pts
20Monona County53.3+1.5 pts
21Harrison County53.2-2.4 pts
22Muscatine County52.5-4.4 pts
23Hamilton County51.6+0.3 pts
24Lucas County51.5-9.6 pts
25Humboldt County51.1+9.2 pts
26Benton County50.7+3.6 pts
27Plymouth County49.6-3 pts
28Winnebago County49.4+2.1 pts
29Kossuth County49.2+5.3 pts
30Crawford County49.2+11.3 pts
31Buena Vista County49-0.7 pts
32Johnson County48.5+5.3 pts
33Linn County48.5-1 pts
34Chickasaw County48.4-7 pts
35Clayton County47.6+2.6 pts
36Tama County46.8-5 pts
37Dallas County46.7-0.6 pts
38Clay County46.6-5.6 pts
39Taylor County46.2+4.3 pts
40Fayette County46.1-7.1 pts
41Scott County45.7-1.6 pts
42Sioux County45.1+3.2 pts
43Warren County44.5+0.2 pts
44Palo Alto County44.5-8.5 pts
45Montgomery County44.4+11.2 pts
46Howard County43.9-4 pts
47Page County43.7+7.2 pts
48Black Hawk County43.1-0.3 pts
49Mahaska County42.7-11 pts
50Adams County42.6+5.8 pts
51Adair County41.8+3 pts
52Emmet County41.7-3.4 pts
53Jones County41.3+2.1 pts
54Jasper County41-3.2 pts
55Wapello County41-0.4 pts
56Wright County40.7+7.1 pts
57Marshall County40.5-1.7 pts
58O'Brien County40.3-24.5 pts
59Polk County40.1+1.5 pts
60Boone County40.1+5.2 pts
61Cerro Gordo County40+1.4 pts
62Buchanan County39.8-9 pts
63Des Moines County39.7+1.3 pts
64Sac County38.9-1.3 pts
65Dubuque County38.9-6 pts
66Carroll County38.6+10.6 pts
67Clarke County38.4-4 pts
68Woodbury County38.2-2 pts
69Dickinson County37.9+11.6 pts
70Washington County37.7-4.4 pts
71Audubon County36.9+8 pts
72Story County36.6-0.6 pts
73Pottawattamie County36+0.4 pts
74Lee County35.9-3.1 pts
75Madison County34.9+4.4 pts
76Davis County34.8-14.6 pts
77Wayne County34.7-7.7 pts
78Calhoun County34.2-1.2 pts
79Mitchell County33.8+13.5 pts
80Delaware County33-1.2 pts
81Louisa County32.9+2.9 pts
82Worth County32.8-4.1 pts
83Hardin County32.8-3.7 pts
83Marion County32.8-0.8 pts
83Webster County32.8-1.2 pts
86Appanoose County32.7+2.7 pts
87Jefferson County32.6-6.9 pts
88Cedar County32.3-1.1 pts
89Osceola County31.7-16.9 pts
90Poweshiek County30.7-5.7 pts
91Ida County30.6-2.5 pts
92Allamakee County29.9-0.1 pts
93Butler County29.8-12.5 pts
94Hancock County25.4+0.3 pts
95Lyon County23.1+0.6 pts
96Decatur County23+6.2 pts
97Van Buren County22.7-12.8 pts
98Clinton County22.7+0.3 pts
99Monroe County16.2-8.5 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/2023/table-based-SF/data/5YRData/acsdt5y2023-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, 2023) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-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, 2023. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b14003.dat. Invokely, https://invokely.ai/rankings/preschool-enrollment-ages-3-4/iowa-counties?period=2023. 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, 2023. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b14003.dat. Also distributed by Invokely, https://invokely.ai/rankings/preschool-enrollment-ages-3-4/iowa-counties?period=2023.

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, 2023 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b14003.dat, via Invokely: https://invokely.ai/rankings/preschool-enrollment-ages-3-4/iowa-counties?period=2023 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_iowa_by_2023,
  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, 2023}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b14003.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/preschool-enrollment-ages-3-4/iowa-counties?period=2023. 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/2023/table-based-SF/data/5YRData/acsdt5y2023-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, 2023
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b14003.dat
L2  - https://invokely.ai/rankings/preschool-enrollment-ages-3-4/iowa-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/preschool-enrollment-ages-3-4/iowa-counties?period=2023.
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/2023/table-based-SF/data/5YRData/acsdt5y2023-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?

Cass County, with 73% in 2023, according to the U.S. Census Bureau.

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

Monroe County, with 16.2% 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, 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