Eureka

City in St. Louis County, Missouri

View of Eureka, Missouri
Photo: Fredlyfish4 · CC BY-SA 3.0

Eureka is a city in St. Louis County, Missouri, with 11,646 residents (2020 Census). It sits at 456 ft (139 m) above sea level. The nearest town is Wildwood, 5.5 miles N.

About Eureka

Eureka is a city mainly in St. Louis County, with a small portion in Jefferson County, Missouri, adjacent to Wildwood and Pacific. It is in the extreme southwest of the Greater St. Louis metro area. As of the 2020 census, the city had a population of 11,646. Since 1971, Eureka has been known as the home of the amusement park Mid America Adventure (formerly known as Six Flags St. Louis).

Text: Wikipedia · CC BY-SA 4.0

Eureka weather: 7-day forecast

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Live webcams in Eureka

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Living in Eureka

Median household income
$108,394
Median home value
$379,200
Median rent
$1,252/mo
Median age
37.5
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Map of Eureka

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Eureka Street View

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Eureka, MO population

Eureka had 11,646 residents in the 2020 Census.

2020 Census11,646
Density1,044 per sq mi (403 per km²)

Source: U.S. Census Bureau, Decennial Census.

Eureka at a glance

StateMissouri (MO)
CountySt. Louis County
TypeCity
Population11,646 (2020)
Land area11.16 sq mi (28.9 km²)
Water area0.16 sq mi (0.41 km²)
Elevation456 ft (139 m)
Coordinates38.4985° N, 90.6454° W
ZIP code63025
Official websiteeureka.mo.us
Census code (GEOID)2922834

Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.

Towns near Eureka

Straight-line distance between town centers.

Frequently asked questions about Eureka

What county is Eureka in?

Eureka is in St. Louis County, Missouri.

What is the population of Eureka, MO?

11,646 people lived in Eureka at the 2020 Census.

What is the ZIP code of Eureka, MO?

The ZIP code of Eureka is 63025.

What is the elevation of Eureka?

456 feet (139 m) above sea level.

What towns are near Eureka?

Wildwood (5.5 mi), Lake Tekakwitha (5.6 mi), Byrnes Mill (5.7 mi), Pacific (5.8 mi), LaBarque Creek (5.9 mi).

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