Kadoka, SD has a population of 809 and is the 16,525th largest city in the United States. The population density is 354 per sq mi which is 3176% higher than the South Dakota average and 291% higher than the national average. The median age in Kadoka is 44 which is approximately 19% higher than the South Dakota average of 37. In Kadoka, 63% of the population over 15 years of age are married, 94% speak English and 1% speak Spanish. 66% of Kadoka residents were born in South Dakota, 33% were born out of state, 0% were born outside of the United States and 0% were foreign born.