Sinai is located in South Dakota. Sinai, South Dakota has a population of 115. Sinai is more family-centric than the surrounding county with 54.55% of the households containing married families with children. The county average for households married with children is 35.01%.
The median household income in Sinai, South Dakota is $43,750. The median household income for the surrounding county is $53,473 compared to the national median of $57,652. The median age of people living in Sinai is 34.1 years.
The average high temperature in July is 83 degrees, with an average low temperature in January of 5.2 degrees. The average rainfall is approximately 26.4 inches per year, with 40.7 inches of snow per year.
