The median income of Barnstable County residents was an inflation-adjusted $32,506 per year. Barnstable County had 95,011 households in 2017, with a population of 213,900.
The county with the highest median resident income in the state was Norfolk County. Norfolk County's median income was $42,889 per year after adjusting for inflation – $10,383 more than Barnstable County. It had 262,324 households in 2017 and a population of 694,389.
Hampshire County had the lowest annual resident income among counties in Massachusetts, with a median income of only $25,761 per year. That was $6,745 less than the median income in Barnstable County at the time. Hampshire County had 58,782 households in 2017 and a population of 161,197.
The table below shows the state's counties ranked by median annual resident earnings in 2017.