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Sinai, SD
Town in Brookings County, South Dakota. ZIP codes: 57061.
Population
215
Land area
0.4sq mi
People per sq mi
585
ZIP codes
1
Sinai and its ZIP codes
Sinai at a glance
- Sinai is about 49 times as dense as South Dakota as a whole.
Local data for Sinai, SD
Counts from official public data
Economy and federal money
Jobs, pay, income and spending are for Brookings County. PPP loans are for Sinai.
Unemployment rate
2.0%
Aug 2026, -0.3 pts in a year
Average annual pay
$58,550
19,542 jobs, 2025
Income per person
$66,775
BEA, 2024
Federal spending
$227M
FY 2026, $6,606 per person
PPP loans
$127K
5 loans, 14 jobs reported
Environment and hazard risk
Sinai, SD, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: winter weather
Storm events since 1996
761
Countywide, mostly hail
Flood insurance policies
59
0.4% of homes, county
July high / Jan low
83° / 5°F
26.2 inches of rain a year
Health statistics
Share of adults in Sinai, SD, CDC PLACES estimates
Obesity
38.4%
U.S. 33.3% +5.1 pts
Diabetes
11.1%
U.S. 12.1% -1.0 pts
Smoking
11.5%
U.S. 12.8% -1.3 pts
Uninsured (18-64)
6.2%
U.S. 11.1% -4.9 pts
ZIP codes in Sinai
1 in or overlapping Sinai. Population shown
Cities near Sinai
| Name | Distance | Land area (sq mi) |
|---|---|---|
| NundaTown | 6 mi | 1 |
| Spring Lake ColonyCensus-designated place | 6.5 mi | 0.3 |
| VolgaCity | 8.1 mi | 1.1 |
| ArlingtonCity | 9.3 mi | 1.7 |
| RamonaTown | 12 mi | 0.3 |
| HetlandTown | 13 mi | 0.1 |
| OldhamCity | 13 mi | 0.2 |
| BrookingsCity | 13 mi | 14 |
| BruceCity | 15 mi | 0.4 |
| MadisonCity | 17 mi | 4.6 |
| WentworthVillage | 18 mi | 0.3 |
| AuroraTown | 18 mi | 0.8 |
| Lake PrestonCity | 18 mi | 0.8 |
| BadgerTown | 19 mi | 1.1 |
| Lake MadisonCensus-designated place | 20 mi | 4.7 |
| BushnellTown | 21 mi | 0.7 |
Frequently asked questions
- What county is Sinai, SD in?
- Sinai is in Brookings County, South Dakota.
- What ZIP codes are in Sinai, SD?
- ZIP codes in or overlapping Sinai include 57061.
- What is the population of Sinai, SD?
- About 215 people live in Sinai, based on American Community Survey 5-year estimates.
- What cities are near Sinai?
- Nearby places include Nunda (6 mi), Spring Lake Colony (6.5 mi), Volga (8.1 mi), Arlington (9.3 mi), Ramona (12 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023