What County Is Eureka, Missouri In?
Eureka is in Jefferson County and St. Louis County. Check a specific address near a county line.
- Official code
- 2922834
- Representative coordinates
- 38.498468, -90.645420
- Land area
- 28.895 km²
- Water area
- 0.406 km²
- State
- Missouri
The representative point identifies this area. It is not a street address or a boundary survey.
County boundaries in Eureka
This place crosses county lines. A city name alone cannot identify the county for every address. Check a point on the county map.
Coordinates of Eureka
38.498468, -90.645420 is the Census representative point, not a street address. Convert these coordinates or prepare a map link.
Elevation in Eureka
145 m · 476 ft. GNIS archived height at its named reference point (38.500354, -90.6490692), which may differ from the Census point. Terrain height varies across the place; this is not a city-wide or surveyed elevation. Request height at a different point.
Today’s sunrise and sunset
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Approximate calculations at the representative coordinates, using a level horizon. Terrain and weather can change what you see.
Time zones in Eureka
The representative point uses America/Chicago.
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/Chicago | UTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.
Census ZIP areas
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Areas sharing the mapped boundary
These areas touch this mapped boundary.
Before using this answer on a form
A city boundary, a CDP and a mailing city can mean different things.
Find the county at your current point, check its ZIP area, or find its physical time zone.