Total enrollment
170
-28 (-14%) vs SY 2017-18
1 public-school campus operate inside Armstrong, with roughly 170 K-12 students enrolled (1 high).
| Name | Level | Grades | Enrollment |
|---|---|---|---|
| North Union High School | High | 09-12 | 170 |
Armstrong, Iowa is home to 1 public schools, with combined enrollment of approximately 170 students. By school count, it is a small city.
Average school size in Armstrong is around 170 students, 55% noticeably below the Iowa average of about 376.
Trend over the past 7 years. Across the same 7-year window, public-school enrollment fell 14%: 198 students in SY 2017-18 versus 170 in SY 2024-25.
Within the allk12 community for this area, the community for Armstrong discusses open enrollment windows, redistricting talk, and busing logistics. Posts come from current and former families, staff, and alumni.