In 2020, Jefferson County, MO had a population of 225k people with a median age of 39.6 and a median household income of $67,606. Between 2019 and 2020 the population of Jefferson County, MO grew from 223,951 to 224,777, a 0.369% increase and its median household income grew from $65,454 to $67,606, a 3.29% increase.
The 5 largest ethnic groups in Jefferson County, MO are White (Non-Hispanic) (92.7%), Two+ (Non-Hispanic) (3.36%), White (Hispanic) (1.62%), Black or African American (Non-Hispanic) (0.864%), and Asian (Non-Hispanic) (0.778%).
None of the households in Jefferson County, MO reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
99.4% of the residents in Jefferson County, MO are U.S. citizens.
The largest universities in Jefferson County, MO are Jefferson College (847 degrees awarded in 2020).
In 2020, the median property value in Jefferson County, MO was $167,700, and the homeownership rate was 79.5%.
Most people in Jefferson County, MO drove alone to work, and the average commute time was 31.1 minutes. The average car ownership in Jefferson County, MO was 2 cars per household.