In 2023, Green Mountain, IA had a population of 105 people with a median age of 63.3 and a median household income of $50,227. Between 2022 and 2023 the population of Green Mountain, IA declined from 190 to 105, a −44.7% decrease and its median household income declined from $58,000 to $50,227, a −13.4% decrease.
The 5 largest ethnic groups in Green Mountain, IA are White (Non-Hispanic) (100%), White (Hispanic) (0%), Black or African American (Non-Hispanic) (0%), Black or African American (Hispanic) (0%), and American Indian & Alaska Native (Non-Hispanic) (0%).
None of the households in Green Mountain, IA reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
100% of the residents in Green Mountain, IA are U.S. citizens.
In 2023, the median property value in Green Mountain, IA was $86,000, and the homeownership rate was 93.5%.
Most people in Green Mountain, IA drove alone to work, and the average commute time was 14.3 minutes. The average car ownership in Green Mountain, IA was 2 cars per household.