Total enrollment
2,377
+47 (+2%) vs SY 2020-21
O'Brien County
Iowa · Public K-12
O'Brien County serves about 2,377 K-12 students across 9 public schools, an average of roughly 264 students per school. By grade band, the county runs 4 elementary, 2 middle, and 3 high schools.
4-year change in O'Brien County
SY 2020-21 vs SY 2024-25School count
9
+1 (+13%) vs SY 2020-21
Source: NCES Common Core of Data, enrollment-weighted demographic averages
How O'Brien County ranks
Among counties| Measure | This county | In Iowa | In the US |
|---|---|---|---|
| State test proficiency ranked highest first | 81.5% | #8 of 89 | N/A |
| Enrollment ranked largest first | 2,377 | #53 of 90 | #2,061 of 2,745 |
| Number of schools ranked most first | 9 | #55 of 90 | N/A |
| Students per teacher ranked fewest first | 13.1:1 | #34 of 90 | #959 of 2,655 |
| Free or reduced-price lunch share ranked highest first | 39.8% | #52 of 90 | #2,105 of 2,526 |
| Diversity index ranked most diverse first | 39.0% | #26 of 89 | #1,516 of 2,707 |
Counties need at least 3 schools and 1,000 students to be ranked. Test proficiency is ranked within the state only, since each state gives a different test. Each rank links to the full list.
O'Brien County school rankings
Residents
14,126
all ages · ACS 5-yr
Schools
9
3 districts
Enrollment
2,377
students · NCES CCD
Median income
$68,356
Below Iowa avg
Free/reduced lunch
39.8%
Below Iowa avg
Elementary
4
1,100 students
Middle
2
477 students
High
3
800 students
Combined / other
0
schools
LARGEST DISTRICT
Sheldon Comm School District
1,179 students · 3 districts in O'Brien County
County vs. school enrollment demographics
Left bar is the racial makeup of O'Brien 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
School enrollment
Bachelor's+
22.0%
adults 25+
Poverty rate
9.3%
ACS 5-year
Unemployment
1.0%
civilian labor
Median age
40
24.4% under 18
Test scores in O'Brien County
Latest 2024-25 ELA proficiency, 8 schools ranked. Iowa state average: 73.7%.
Top 5 schools (ELA)
Lowest 5 schools (ELA)
| Name | City | Level | Grades | Enrollment | Rating |
|---|---|---|---|---|---|
| East Elementary School | Sheldon | Elementary | PK-04 | 468 | · |
| Sheldon High School | Sheldon | High | 09-12 | 356 | · |
| South O'Brien Elem School - Primghar Center | Primghar | Elementary | PK-06 | 328 | · |
| Sheldon Middle School | Sheldon | Middle | 05-08 | 312 | · |
| Hartley-Melvin-Sanborn Elementary School | Hartley | Elementary | PK-04 | 261 | · |
| South O'Brien Secondary School | Paullina | High | 07-12 | 241 | · |
| Hartley-Melvin-Sanborn High School | Hartley | High | 09-12 | 203 | · |
| Hartley-Melvin-Sanborn Middle School | Sanborn | Middle | 05-08 | 165 | · |
| Little Orabs Preschool | Sheldon | Elementary | PK-PK | 43 | · |
Cities in O'Brien County
About O'Brien County
Across the sparse Iowa county of O'Brien County of about 14,126 residents, the public-school footprint covers 9 schools and about 2,377 students.
In context, census numbers show median household income runs near $68,356, 22% of adults hold a bachelor's degree or higher, and roughly 9% of residents live below the federal poverty line. That income level is 5% noticeably below the Iowa median.
On the level-by-level breakdown, O'Brien County consists of 4 elementary schools (1,100 students), 2 middle schools (477), and 3 high schools (800).
Sheldon Comm School District is the biggest district by enrollment, covering about 1,179 students across O'Brien County.
Trend over the past 4 years. Across the same 4-year window, public-school enrollment held roughly steady: 2,330 students in SY 2020-21 versus 2,377 in SY 2024-25. Over that span, O'Brien County opened 1 school, going from 8 to 9.
In the discussion threads here, the community for O'Brien County discusses sports rivalries, cross-district programs, and shared facilities. Discussions cut across districts, schools, and grade levels.
Frequently asked questions
DATA · Census ACS 5-year · NCES Common Core of Data