Sinai, SD Profile: Facts, Map & Data


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Sinai, South Dakota - Basic Facts

The Town of Sinai had a population of 122 as of July 1, 2016.

The primary coordinate point for Sinai is located at latitude 44.2445 and longitude -97.044 in Brookings County. The formal boundaries for the Town of Sinai (see map below) encompass a land area of 0.37 sq. miles and a water area of 0 sq. miles. Brookings County is in the Central time zone (GMT -6). The elevation is 1,785 feet.

The Town of Sinai (GNIS ID: 1267565) has a C5 Census Class Code which indicates an active incorporated place that is independent of any county subdivision and serves as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Beneath the boundary map are tables with Sinai population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2016.

Neighborhood Data

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Town of Sinai, SD Boundary Map

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Sinai, SD Data & Demographics (As of July 1, 2016)


Total Population 122
Population in Households 122
Population in Familes 105
Population in Group Qrtrs 0
Population Density1 332
Diversity Index2 11


Total Households 54
Average Household Size 2.26
Family Households 41
Average Family Size 3


Total Housing Units 64 (100%)
Owner Occupied HU 49 (76.6%)
Renter Occupied HU 5 ( 7.8%)
Vacant Housing Units 10 (15.6%)
Median Home Value $180,952
Average Home Value $209,500


Median Household Income $75,000
Average Household Income $95,093
Per Capita Income $39,602
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.26% 0.16%
Households 0.61% 0.73%
Families 4.05% 0.48%
Median Household Income   2.12%
Per Capita Income   2.73%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Sinai, SD - Peer Comparisons by Rank and Percentile

The table below compares Sinai to the other 391 incorporated cities, towns and CDPs in South Dakota by rank and percentile using July 1, 2016 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 269 31st
Population Density1 # 231 41st
Diversity Index2 # 233 40th
Median Household Income # 14 96th
Per Capita Income # 7 98th

Additional comparisons and rankings can be made with a VERY EASY TO USE South Dakota Census Data Comparison Tool.

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