Iroquois, SD has a population of 312 and is the 22,284th largest city in the United States. The population density is 503 per sq mi which is 4552% higher than the South Dakota average and 455% higher than the national average. The median age in Iroquois is 34 which is approximately 8% lower than the South Dakota average of 37. In Iroquois, 62% of the population over 15 years of age are married, 98% speak English and 0% speak Spanish. 82% of Iroquois residents were born in South Dakota, 18% were born out of state, 0% were born outside of the United States and 0% were foreign born.
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The population density in Iroquois is 4552% higher than South Dakota.
The median age in Iroquois is 8% lower than South Dakota.
In Iroquois 100.00% of the population is White.
In Iroquois 0.00% of the population is Black or African American.