A Circa Guide to EurekaEureka is a city located in St. Louis County, Missouri, United States, between St. Louis and Pacific, Missouri, along Interstate 44. As of the 2010 census, the city had a total population of 10,189. Since 1971, Eureka has been known as the home of the amusement park formerly known as Six Flags Over Mid-America and now called Six Flags St. Louis.
|Total area||0.7 sq mi (1.8 km2)|
|Population||6,904 (3,808 /km2)|
|Zip code(s)||Part of 63109|