The median income of Johnston County residents was an inflation-adjusted $27,058 per year. Johnston County had 65,401 households in 2017, with a population of 186,308.
The county with the highest median resident income in the state was Wake County. Wake County's median income was $36,316 per year after adjusting for inflation – $9,258 more than Johnston County. It had 381,971 households in 2017 and a population of 1,023,811.
Watauga County had the lowest annual resident income among counties in North Carolina, with a median income of only $17,129 per year. That was $9,929 less than the median income in Johnston County at the time. Watauga County had 20,331 households in 2017 and a population of 53,421.
The table below shows the top 100 counties ranked by median annual resident earnings in 2017.