Green Mountain, IA has a population of 120 and is the 26,415th largest city in the United States. The population density is 175 per sq mi which is 220% higher than the Iowa average and 93% higher than the national average. The median age in Green Mountain is 49 which is approximately 29% higher than the Iowa average of 38. In Green Mountain, 70% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 95% of Green Mountain residents were born in Iowa, 5% 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 Green Mountain is 220% higher than Iowa.
The median age in Green Mountain is 29% higher than Iowa.
In Green Mountain 100.00% of the population is White.
In Green Mountain 0.00% of the population is Black or African American.
In Green Mountain 0.00% of the population is Asian.