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Decatur County

Iowa · Public K-12

6 public K-12 schools, roughly 967 students, one county, 7,759 residents. That is Decatur County, Iowa on the numbers. The level mix is 3 elementary, 1 middle, and 2 high schools.

7-year change in Decatur County

SY 2017-18 vs SY 2024-25
Total enrollment
967
-176 (-15%) vs SY 2017-18
School count
6
-1 (-14%) vs SY 2017-18
% White
90%
was 93%
% Hispanic
5%
was 4%
% Black
1%
was 1%
% Asian
0%
was 0%
Source: NCES Common Core of Data, enrollment-weighted demographic averages
Schools
6
2 districts
Enrollment
967
NCES CCD
Median income
$59,044
Below Iowa avg
Free/reduced lunch
61.0%
Above Iowa avg
Elementary
3
532 students
Middle
1
63 students
High
2
372 students
Combined / other
0
schools
LARGEST DISTRICT
Central Decatur Comm School District
632 students · 2 districts in Decatur County

County vs. school enrollment demographics

Left bar is the racial makeup of Decatur County residents (Census ACS 5-year). Right bar is the enrollment-weighted makeup of public schools in the county (NCES CCD). NCES systematically under-reports Hispanic, Pacific Islander, and Native American enrollment for many schools; where the resident share is meaningful but the reported school share is zero, we mark the school bar "not reported".

County residents
White
92%
Hispanic
4%
Black
1%
Asian
1%
Two or more
5%
Native American
0%
Pacific Islander
0%
School enrollment
White
90%
Hispanic
5%
Black
1%
Asian
0%
Two or more
4%
Native American
0%
Pacific Islander
0%
Bachelor's+
23.5%
adults 25+
Poverty rate
10.8%
ACS 5-year
Unemployment
1.9%
civilian labor
Median age
36
22.2% under 18

Test scores in Decatur County

Latest 2024-25 ELA proficiency, 5 schools ranked. Iowa state average: 73.7%.

See all 5 schools in Decatur County ranked by score →

All schools (6)

NameCityLevelGradesEnrollmentRating
Central Decatur MS/HS High SchoolLeonHigh07-12291·
Lamoni Elementary SchoolLamoniElementaryPK-05191·
South Elementary SchoolLeonElementaryPK-02173·
North Elementary SchoolLeonElementary03-06168·
Lamoni High SchoolLamoniHigh09-1281·
Lamoni Middle SchoolLamoniMiddle06-0863·

Cities in Decatur County

Lamoni3 schoolsLeon3 schools

About Decatur County

Decatur County is a sparse county of about 7,759 residents in Iowa. Its public-school system teaches approximately 967 students across 6 schools.

Looking at the broader picture, census numbers show median household income runs near $59,044, roughly 24% of adults have completed at least a four-year degree, and roughly 11% of residents live below the federal poverty line. That income level is 18% below the Iowa median.

On the level-by-level breakdown, Decatur County comprises 3 elementary schools (532 students), 1 middle school (63), and 2 high schools (372).

Central Decatur Comm School District dominates the local landscape, accounting for roughly 632 students on its own.

Trend over the past 7 years. Combined enrollment now sits at 967 students, contracted 15% from the 1,143 reported in SY 2017-18. Over that span, Decatur County shed 1 school, going from 7 to 6. The White share of public-school enrollment fell from 93% to 90%.

In the discussion threads here, the community for Decatur County discusses comparison threads between local schools and program reviews. Posts come from current and former families, staff, and alumni.

Frequently asked questions

How many public schools are in Decatur County?
Decatur County, Iowa has 6 public K-12 schools serving approximately 967 students.
How many high schools are in Decatur County?
Decatur County, Iowa has 2 public high schools, serving approximately 372 students.
How many middle schools are in Decatur County?
Decatur County, Iowa has 1 public middle school, serving approximately 63 students.
How many elementary schools are in Decatur County?
Decatur County, Iowa has 3 public elementary schools, serving approximately 532 students.
What is the largest school district in Decatur County?
Central Decatur Comm School District is the largest school district in Decatur County, serving approximately 632 students. The county contains 2 school districts overall.
What is the population of Decatur County?
Decatur County, Iowa has a population of approximately 7,759, with a median age of 36. About 22.2% of residents are under 18.
What is the median household income in Decatur County?
Median household income in Decatur County is $59,044, below the Iowa average of $71,592. About 10.8% of residents live below the federal poverty line.
How educated are residents of Decatur County?
Approximately 23.5% of adults 25 and older in Decatur County hold a bachelor's degree or higher, according to the Census ACS 5-year estimate.
What share of students in Decatur County qualify for free or reduced lunch?
Roughly 61.0% of students in Decatur County public schools qualify for free or reduced-price lunch, a common proxy for low-income enrollment. This is higher than the Iowa county average of 41.8%.
What is the student-teacher ratio in Decatur County schools?
Across Decatur County public schools, the enrollment-weighted student-teacher ratio is approximately 13.1 to 1.
DATA · Census ACS 5-year · NCES Common Core of Data