
Mason City School · National Register of Historic Places
Mason City’s story
140 years in pictures
Census counts: 241 in 1900, a peak of 487 in 1920, 151 in 2020. The archive holds 7 old photos and papers going back to 1942 and 2 maps from 1951 on.
1 place on the National Register of Historic Places.
- 1886Mason City is settled
Explore the history →
Getting set upMoving to Mason City: who provides what
Who provides power, water and the rest in Mason City, and how to reach them.
The full setup list →EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Sep 30, 2026.