Town guide
Lyon
A township of 41 people in Brule 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 Lyon album
0 of 12 shotsNeighbors document Lyon together
Outdoors in Lyon
Parks & trails →Conserved land27%6,093 of 22,770 acres
Trails2.0 mi0.1 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 Lyon
Health in Lyon
Compared with South Dakota
6worse than SD
of 26 measures CDC estimates. The other 20 are too close to call.
BetterToo close to callWorse
What stands out
Care nearby
Sanford Chamberlain Medical CenterChamberlain · 17.5 mi · ER · rural critical access
Access Health - ChamberlainChamberlain · 17.9 mi · sliding-scale fees
Primary careShortage · county-wide
DentalShortage · county-wide
Mental healthShortage · county-wide
CDC PLACES 2025 · modeled estimates for adults · ZIP codes 57355, 57341 · CMS · HRSAHealth in Lyon →
Natural hazards in Lyon
High
Expected storm and flood damage is higher than in 65% of U.S. communities.
🥶 Cold waves🌊 Inland flooding🌵 Drought
FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Lyon →
Libraries near Lyon
See all →Nearest: Kimball Public LibraryKimball · 11.3 miles · 26 hrs a week
Where Lyon is
Explore map →Imported town boundary
South Dakota · SD · Brule CountyTown boundary on OpenStreetMap →
Around town
Explore map →Bordering towns
How things work in Lyon
All explainers →No one has written Lyon’s explainers yetKnow how one of these works here? Each explainer earns +10 karma.