The median income of Shelby County residents was an inflation-adjusted $30,183 per year. Shelby County had 17,603 households in 2017, with a population of 44,339.
The county with the highest median resident income in the state was Hamilton County. Hamilton County's median income was $43,758 per year after adjusting for inflation – $13,575 more than Shelby County. It had 114,282 households in 2017 and a population of 309,687.
Monroe County had the lowest annual resident income among counties in Indiana, with a median income of only $20,728 per year. That was $9,455 less than the median income in Shelby County at the time. Monroe County had 55,014 households in 2017 and a population of 144,436.
The table below shows the state's counties ranked by median annual resident earnings in 2017.