IrwinSD
A town.
Irwin’s report card
Now in Irwin
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The data
Ordered by what stands out in Irwin. Another town gets a different order.
Natural hazards
High risk, with inland flooding at the top
Expected storm and flood damage is higher than in 69% of U.S. communities.
69risk score of 100
FEMA risk score
Inland floodingCold wavesTornadoes
FEMA National Risk Index · OpenFEMANatural hazards →
Climate
Snowy winters, pleasant summers
Irwin has cold, snowy winters and warm summers. A typical July afternoon reaches 88°, a January night drops to 11°, and about 45 inches of snow falls in a normal winter.
45″snow a winter
Typical low → high °F
Winter14–35°
Spring34–59°
Summer59–84°
Fall37–62°
Oct 3
typical first frost
May 6
typical last frost
+1.3°
vs. the 20th-century average
NOAA U.S. Climate Normals, 1991–2020Full climate →
Health
How healthy Irwin is
Irwin beats the South Dakota average on 2 of 26 CDC measures and trails it on 9.
26 measures vs. South Dakota
2 better15 too close to call9 worse
| What stands out | Irwin | SD |
|---|---|---|
| More adults treating high blood pressure | 81% | 75.9% |
| More adults getting cholesterol checked | 86.9% | 84.8% |
| More adults with heart disease | 9.6% | 6.8% |
Avera Gregory Hospital
8.8 mi away · emergency room
3 of 3
care shortages: primary care, dental, mental health
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSAFull health report →
Outdoors
1.8% of Irwin is conserved land
27 miles of trails across 0 parks and preserves.
1.8%conserved
1.8%
conserved · 413 of 22,791 acres
27 mi
of trails · 0.8 per sq mi
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-USParks & trails →
Irwin’s neighbors
4 towns share a border with Irwin.