In 2020, St. Louis County, MO had a population of 996k people with a median age of 40.4 and a median household income of $68,661. Between 2019 and 2020 the population of St. Louis County, MO declined from 996,919 to 996,179, a −0.0742% decrease and its median household income grew from $67,420 to $68,661, a 1.84% increase.
The 5 largest ethnic groups in St. Louis County, MO are White (Non-Hispanic) (64.8%), Black or African American (Non-Hispanic) (24.2%), Asian (Non-Hispanic) (4.45%), Two+ (Non-Hispanic) (3.14%), and White (Hispanic) (1.66%).
None of the households in St. Louis 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.
96.7% of the residents in St. Louis County, MO are U.S. citizens.
The largest universities in St. Louis County, MO are Washington University in St Louis (5,890 degrees awarded in 2020), Webster University (4,106 degrees), and University of Missouri-St Louis (2,887 degrees).
In 2020, the median property value in St. Louis County, MO was $206,700, and the homeownership rate was 68.3%.
Most people in St. Louis County, MO drove alone to work, and the average commute time was 24.1 minutes. The average car ownership in St. Louis County, MO was 2 cars per household.
St. Louis County, MO borders Madison County, IL, Monroe County, IL, St. Clair County, IL, Franklin County, MO, Jefferson County, MO, St. Charles County, MO, and St. Louis city, MO.