The median income of Oklahoma County residents was an inflation-adjusted $27,867 per year. Oklahoma County had 296,818 households in 2017, with a population of 774,203.
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 – $4,638 more than Oklahoma 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 $8,861 less than the median income in Oklahoma 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.