St. Louis County, Missouri

This flag was adopted on March 11, 2025. Symbolism: Fleur-de-lis: Central to the flag, this symbol honors St. Louis’ French roots and cultural legacy. Interwoven Circles: Encircling the fleur-de-lis, these represent the confluence of the Missouri, Mississippi, and Meramec rivers, highlighting the county’s geographical significance and unity among its communities. Red Hue: Reflecting the passion for local sports teams, notably the St. Louis Cardinals and St. Louis CITY SC, the red color signifies community pride.