St. Charles, ID has a population of 122 and is the 26,356th largest city in the United States. The population density is 175 per sq mi which is 815% higher than the Idaho average and 93% higher than the national average. The median age in St. Charles is 37 which is approximately 3% higher than the Idaho average of 36. In St. Charles, 63% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 70% of St. Charles residents were born in Idaho, 30% 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 St. Charles is 815% higher than Idaho.
The median age in St. Charles is 3% higher than Idaho.
In St. Charles 100.00% of the population is White.
In St. Charles 0.00% of the population is Black or African American.