Town guide
Rex
A township of 36 people in Lyman County, South Dakota
From your neighbors
What’s happening
Weather
Forecast →Coming up
Upcoming events
Nothing on the calendar yet
Add an event →Put the next local happening — a market, a meeting, a concert — on the map.
Around town
All news →Local news
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Headlines via Google News · Articles belong to their publishers.
The Rex album
0 of 12 shotsNeighbors document Rex together
Outdoors in Rex
Parks & trails →Conserved land1.3%301 of 22,844 acres
Trails37 mi1 mi per sq mi
Parks & preserves0named on the map
Know a trail or park that’s missing? Anyone can add it to OpenStreetMap, and it shows up here on the next refresh.
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
Town numbers
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Living in Rex
Health in Rex
Compared with South Dakota
1worse than SD
of 26 measures CDC estimates. The other 25 are too close to call.
BetterToo close to callWorse
What stands out
Care nearby
Sanford Chamberlain Medical CenterChamberlain · 20.2 mi · ER · rural critical access
Access Health - KennebecKennebec · 8.1 mi · sliding-scale fees
Primary careShortage · county-wide
DentalShortage · county-wide
Mental healthShortage · county-wide
CDC PLACES 2025 · modeled estimates for adults · ZIP codes 57569, 57544 · CMS · HRSAHealth in Rex →
Natural hazards in Rex
Very high
Expected storm and flood damage is higher than in 85% of U.S. communities.
🌊 Inland flooding🥶 Cold waves🧊 Hail
FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Rex →
Climate in Rex
Full climate →Rex has cold, snowy winters and warm summers, with very little rain. A typical July afternoon reaches 88°, a January night drops to 10°, and about 40 inches of snow falls in a normal winter.
33° / 12°Winter
59° / 34°Spring
85° / 59°Summer
62° / 37°Fall
NOAA U.S. Climate Normals, 1991–2020Climate in Rex →
Libraries near Rex
See all →Nearest: Kennebec Public LibraryKennebec · 8.1 miles · 16 hrs a week
Where Rex is
Explore map →Imported town boundary
South Dakota · SD · Lyman CountyTown boundary on OpenStreetMap →
Around town
Explore map →Bordering towns
How things work in Rex
All explainers →No one has written Rex’s explainers yetKnow how one of these works here? Each explainer earns +10 karma.