Iona TownshipSD
A town of 64, settled in 1898.
Is Iona Township a good place to live?
55% of residents live below the poverty line in Iona Township, above both the South Dakota town median (9.5%) and the median of U.S. towns (9.6%). Only 3 of the 36 South Dakota towns we compare have a higher July high than Iona Township. 12% of the land in Iona Township is conserved, where South Dakota’s towns sit at 3.3% and U.S. towns at 4.3%. Iona Township has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
64 people, and everyone knows the way
In a town this size, neighbors are the best guide. Ask them anything.
Moving to Iona Township: who provides what
Who provides power, water and the rest in Iona Township, and how to reach them.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Aug 3, 2026.
The data
Ordered by what stands out in Iona Township.
Iona Township faces a very high natural-hazard risk, led by inland flooding
Expected storm and flood damage is higher than in 85% of U.S. communities.
FEMA National Risk Index · OpenFEMA
In Iona Township, expect snowy winters and hot summers
Iona Township has cold, snowy winters and warm summers, with very little rain. The January low in Iona Township is 11°F.
Typical low → high °F
NOAA U.S. Climate Normals, 1991–2020
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
How healthy Iona Township is
Iona Township beats the South Dakota average on 1 of 26 CDC measures and trails it on 7. 38% of adults have high blood pressure in Iona Township. Only 2 of the 36 South Dakota towns we compare have a higher share of adults who had a checkup this year than Iona Township.
| Iona Township | South Dakota towns | U.S. towns | |
|---|---|---|---|
| High blood pressure (CDC PLACES) | 38% | 31% | 35% |
| Diabetes (CDC PLACES) | 14% | 10% | 12% |
| Sleep under 7 hours (CDC PLACES) | 29% | 30% | 36% |
| Depression (CDC PLACES) | 20% | 22% | 23% |
| What stands out | Iona Township | SD |
|---|---|---|
| More adults treating high blood pressure | 80.1% | 75.9% |
| More adults with heart disease | 8.8% | 6.8% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
Everything we know about Iona Township
Colleges nearby
None within 15 miles of Iona Township; the nearest are
About 0 of every 100 Iona Township residents are enrolled in college, against 5 across South Dakota.
About Iona Township
Unincorporated community in South Dakota, United States
Iona is an unincorporated community in Lyman County, South Dakota, United States. Although not tracked by the Census Bureau, Iona has been assigned the ZIP code of 57542. Iona is a Native American name meaning "fire around".
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
- Area
- 138 sq mi
- Elevation
- 1,693 ft
Questions about Iona Township
Short answers, built from the data on this page.
Is Iona Township, SD a good place to live?
Iona Township has fewer than 1,000 residents, too few for fair grades; the figures below are still real.