Sinai, South Dakota
Sinai: Town of the United States
About
Sinai is a town located in the county of Brookings in the U.S. state of South Dakota. Its population at the 2010 census was 120 and a population density of 126 people per km². After 10 years in 2020 city had an estimated population of 125 inhabitants.
Quick Facts about Sinai
| Population : | 125 (2020) |
| Country : | United States of America |
| State : | South Dakota (United States) |
| County : | Brookings County |
| Postal code : | 57061 |
| Phone Area Codes : | 605 |
| Area : | 0.95 km2 |
| Altitude : | 1,781 feet / 543 meters |
| Time Zone : | America/Chicago |
| Local time : | 11:22:52 (5th December 2025) |
| Density : | 131 Pop. per km² as of 2020 |
| Population growth : | 4% (2010-2020) |
Geography
Sinai is located at 44°14'40"N 97°2'27"W (44.2444100, -97.0408900).
Sinai map
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Demographics
The population of Sinai increased by 4% in 10 years.
| Year | Population | % Change | Method |
| 2010 | 120 | - | census |
| 2011 | 119 | -0.84% | estimation process |
| 2012 | 123 | 3.25% | estimation process |
| 2013 | 121 | -1.65% | estimation process |
| 2014 | 122 | 0.82% | estimation process |
| 2015 | 123 | 0.81% | estimation process |
| 2016 | 123 | 0% | estimation process |
| 2017 | 124 | 0.81% | estimation process |
| 2018 | 126 | 1.59% | estimation process |
| 2019 | 124 | -1.61% | estimation process |
| 2020 | 125 | 0.8% | estimation process |
Sinai zip code is 57061.
County name: Brookings, County
fips: 46011
Schools in Sinai
College & universities near Sinai, SD
| Code | Name | City | ZIP |
|---|---|---|---|
| 219356 | South Dakota State University | Brookings (SD) | 57007-1898 |
Other cities in Brookings County
Cities, towns, neighborhoods & other populated places in Brookings County , SD.
| City Name | Population | Title |
|---|---|---|
| Medary | 1,504 | Township in Brookings County, South Dakota |
| Brookings | 446 | City in and county seat of Brookings County, South Dakota, United States |
| Volga | 374 | City in Brookings County, South Dakota, United States |
| Aurora | 299 | Town in Brookings County, South Dakota, United States |
| Bruce | 205 | City in Brookings County, South Dakota, United States |
| White | 135 | City in Brookings County, South Dakota, United States |
| Elkton | 99 | Township in Brookings County, South Dakota |
| Bushnell | 67 | Town in South Dakota, United States of America |
