In 2018, Mercer County, MO had a population of 3.66k people with a median age of 43 and a median household income of $44,085. Between 2017 and 2018 the population of Mercer County, MO declined from 3,669 to 3,664, a -0.136% decrease and its median household income grew from $43,314 to $44,085, a 1.78% increase.
The 5 largest ethnic groups in Mercer County, MO are White (Non-Hispanic) (95.4%), Two+ (Non-Hispanic) (1.64%), White (Hispanic) (1.47%), Asian (Non-Hispanic) (0.519%), and Other (Hispanic) (0.409%). 0% of the households in Mercer County, MO speak a non-English language at home as their primary language, and 99.1% of the residents in Mercer County, MO are U.S. citizens.
In 2018, the median property value in Mercer County, MO was $87,500, and the homeownership rate was 76.6%. Most people in Mercer County, MO drove alone to work, and the average commute time was 20.9 minutes. The average car ownership in Mercer County, MO was 3 cars per household.