The median income of Keystone residents was an inflation-adjusted $32,202 per year. Keystone had 260 households in 2017, with a population of 634.
The city with the highest median resident income in the state was Bentley. Bentley's median income was $73,309 per year after adjusting for inflation – $41,107 more than Keystone. It had 43 households in 2017 and a population of 104.
Rodney had the lowest annual resident income among cities in Iowa, with a median income of only $9,659 per year. That was $22,543 less than the median income in Keystone at the time. Rodney had 29 households in 2017 and a population of 50.
The table below shows the top 100 cities ranked by median annual resident earnings in 2017.