The median income of Aroostook County residents was an inflation-adjusted $21,284 per year. Aroostook County had 29,844 households in 2017, with a population of 68,840.
The county with the highest median resident income in the state was Cumberland County. Cumberland County's median income was $32,098 per year after adjusting for inflation – $10,814 more than Aroostook County. It had 118,807 households in 2017 and a population of 289,173.
The table below shows the state's counties ranked by median annual resident earnings in 2017.