What is richest counties in kansas?

As an AI language model, I do not have access to the latest financial data to determine the richest counties in Kansas. However, according to the U.S. Census Bureau's American Community Survey data from 2019, the median household income in Kansas was $62,087. Some of the counties with higher median household incomes than the state average include Johnson County, Riley County, Sedgwick County, and Douglas County. These counties are known for their strong economies, diverse industries, and high-quality education systems. Forbes has also ranked Johnson County as one of the wealthiest counties in the country due to its high median household income and low poverty rate.