The median income of Kewaunee County residents was an inflation-adjusted $30,631 per year. Kewaunee County had 8,234 households in 2017, with a population of 20,378.
The county with the highest median resident income in the state was Waukesha County. Waukesha County's median income was $38,295 per year after adjusting for inflation – $7,664 more than Kewaunee County. It had 156,996 households in 2017 and a population of 396,731.
Menominee County had the lowest annual resident income among counties in Wisconsin, with a median income of only $21,854 per year. That was $8,777 less than the median income in Kewaunee County at the time. Menominee County had 1,354 households in 2017 and a population of 4,506.
The table below shows the state's counties ranked by median annual resident earnings in 2017.