2004 · SDMap-doton-Sinai · Wikimedia Commons
Sinai’s story
Sinai in pictures
1 postcards, papers and photographs from public archives.
Explore the history →SinaiSD
A town of 215.
Population
215
residents
Median home value
$89K
Census ACS
Household income
$57K
median
Median age
24.9
years
Land area
0 sq mi
Small town
215 people, and everyone knows the way
In a town this size, neighbors are the best guide. Ask them anything.
Nearby towns
Sinai’s report card
Now in Sinai
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The data
Ordered by what stands out in Sinai. Another town gets a different order.
Climate
Four seasons, pleasant summers
Sinai has cold, snowy winters and pleasant summers. A typical July afternoon reaches 82°, a January night drops to 5°, and about 36 inches of snow falls in a normal winter.
36″snow a winter
Typical low → high °F
Winter8–26°
Spring33–54°
Summer58–80°
Fall35–57°
Oct 2
typical first frost
May 3
typical last frost
+0.7°
vs. the 20th-century average
NOAA U.S. Climate Normals, 1991–2020Full climate →
Health
How healthy Sinai is
Sinai beats the South Dakota average on 8 of 26 CDC measures and trails it on 1.
26 measures vs. South Dakota
8 better17 too close to call1 worse
| What stands out | Sinai | SD |
|---|---|---|
| Fewer uninsured adults | 6.2% | 8.8% |
| Fewer smokers | 11.5% | 15.2% |
| More adults who have had cancer | 10.9% | 9.2% |
Brookings Health System
14.3 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 →
Natural hazards
Moderate risk, with inland flooding at the top
Expected storm and flood damage is higher than in 57% of U.S. communities.
57risk score of 100
FEMA risk score
Inland floodingTornadoesCold waves
FEMA National Risk Index · OpenFEMANatural hazards →
About Sinai
Town in South Dakota, United States
Sinai ( SY-nee-eye) is a town in Brookings County, South Dakota, United States. The population was 99 at the 2020 census.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
- Population
- 99
- Area
- 0.4 sq mi
- Elevation
- 1,781 ft
- ZIP code
- 57061
- Area code
- 605