The median income of Oxford County residents was an inflation-adjusted $22,294 per year. Oxford County had 20,756 households in 2017, with a population of 57,230.
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 – $9,804 more than Oxford County. It had 118,807 households in 2017 and a population of 289,173.
Aroostook County had the lowest annual resident income among counties in Maine, with a median income of only $21,284 per year. That was $1,010 less than the median income in Oxford County at the time. Aroostook County had 29,844 households in 2017 and a population of 68,840.
The table below shows the state's counties ranked by median annual resident earnings in 2017.