Total enrollment
2,668
-6 (0%) vs SY 2020-21
9 schools in Ontario
Oregon · Public K-12
Ontario sits inside Oregon and runs 9 public K-12 schools, serving about 2,904 students between them, an average of 323 per school.
4-year change in Ontario
SY 2020-21 vs SY 2024-25School count
7
-2 (-22%) vs SY 2020-21
Source: NCES Common Core of Data, enrollment-weighted demographic averages
Residents
11,842
all ages · ACS 5-yr
Students
2,904
public K-12 · NCES
Schools
9
public K-12
| Name | Level | Grades | Enrollment |
|---|---|---|---|
| Aiken Elementary School | Elementary | 02-03 | 333 |
| Alameda Intermediate School | Elementary | 04-05 | 355 |
| Annex Charter School | Combined | KG-12 | 131 |
| Cairo Elementary School | Elementary | KG-05 | 124 |
| Four Rivers Community School | Combined | KG-12 | 367 |
| May Roberts Primary School | Elementary | KG-01 | 302 |
| Ontario High School | High | 09-12 | 709 |
| Ontario Middle School | Middle | 06-08 | 471 |
| Pioneer Elementary School | Elementary | KG-05 | 112 |
About Ontario
Ontario is a medium-population Oregon city in terms of public-school footprint, with 9 schools and 2,904 students total.
Looking at the level breakdown, the city is built around 5 elementary, 1 middle, 1 high, and 2 other.
Per-school enrollment runs near 323, lower than the state mean of about 418.
Five-year track record. Combined enrollment now sits at 2,668 students, held roughly steady from the 2,674 reported in SY 2020-21. The school count fell from 9 to 7 across the same 4-year window.
In the discussion threads here, the community for Ontario discusses open enrollment windows, redistricting talk, and busing logistics. Posts come from current and former families, staff, and alumni.