The median income of Washita County residents was an inflation-adjusted $28,039 per year. Washita County had 4,484 households in 2017, with a population of 11,550.
The county with the highest median resident income in the state was Canadian County. Canadian County's median income was $32,505 per year after adjusting for inflation – $4,466 more than Washita County. It had 43,878 households in 2017 and a population of 132,922.
Choctaw County had the lowest annual resident income among counties in Oklahoma, with a median income of only $19,006 per year. That was $9,033 less than the median income in Washita County at the time. Choctaw County had 5,962 households in 2017 and a population of 14,979.
The table below shows the state's counties ranked by median annual resident earnings in 2017.