The median income of Spencer residents was an inflation-adjusted $23,000 per year. Spencer had 60 households in 2017, with a population of 140.
The city with the highest median resident income in the state was Broadland. Broadland's median income was $107,857 per year after adjusting for inflation – $84,857 more than Spencer. It had 15 households in 2017 and a population of 25.
Wounded Knee had the lowest annual resident income among cities in South Dakota, with a median income of only $4,361 per year. That was $18,639 less than the median income in Spencer at the time. Wounded Knee had 91 households in 2017 and a population of 521.
The table below shows the top 100 cities ranked by median annual resident earnings in 2017.