Town guide
Lynn
A township of 31 people in Day 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
Loading local headlines…
Headlines via Google News · Articles belong to their publishers.
The Lynn album
0 of 12 shotsNeighbors document Lynn together
Outdoors in Lynn
Parks & trails →Conserved land26%5,890 of 22,845 acres
Trails0.0 mi0 mi per sq mi
Parks & preserves2named 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
ZIP codeSign in to add
Area codeSign in to add
Living in Lynn
Health in Lynn
Compared with South Dakota
2better than SD·8worse
of 26 measures CDC estimates. The other 16 are too close to call.
BetterToo close to callWorse
What stands out
Care nearby
Sanford Hospital Webster - CahWebster · 10.6 mi · ER · rural critical access
Horizon Health - AberdeenAberdeen · 38.4 mi · sliding-scale fees
Primary careShortage · county-wide
DentalShortage · county-wide
Mental healthShortage · county-wide
CDC PLACES 2025 · modeled estimates for adults · ZIP codes 57274, 57468, 57219 · CMS · HRSAHealth in Lynn →
Natural hazards in Lynn
Very low
Expected storm and flood damage is higher than in 18% of U.S. communities.
🥶 Cold waves🌊 Inland flooding💨 Strong wind
FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Lynn →
Climate in Lynn
Full climate →Lynn has cold, snowy winters and pleasant summers. A typical July afternoon reaches 81°, a January night drops to 2°, and about 43 inches of snow falls in a normal winter.
23° / 6°Winter
52° / 31°Spring
78° / 57°Summer
55° / 35°Fall
NOAA U.S. Climate Normals, 1991–2020Climate in Lynn →
Libraries near Lynn
See all →Nearest: Webster Public LibraryWebster · 11 miles · 28 hrs a week
Where Lynn is
Explore map →Imported town boundary
South Dakota · SD · Day CountyTown boundary on OpenStreetMap →
Around town
Explore map →Bordering towns
How things work in Lynn
All explainers →No one has written Lynn’s explainers yetKnow how one of these works here? Each explainer earns +10 karma.