Welcome to Eureka ...
The city of Eureka is located in Saint Louis County<1>.
The location of Eureka has been provided by the Geographic Names Information System (ie- the GNIS).<2>
While we don't have a date for the founding of Eureka, you might consider that their post office opened in 1860.
When the people of Eureka refer to themselves (known as a demonym), they frequently use Eurekan<3>
From the Census Estimates for 2019, Eureka has a population of 10,964 people<4> (see below for details).
Eureka is 460 feet [140 m] above sea level.<5>.
Time Zone: Eureka lies in the Central Time Zone (CST/CDT) and observes daylight saving time
The telephone area code for Eureka: (636)
The ZIP code for Eureka: 63025<6>
Websites for Eureka ...
Official Website: www.eureka.mo.us/
Population Details ...
Taken from the 2019 Census Estimates, Eureka had an population of 10,964 people. This is an increase of 7.61% since the 2010 Census (or an increase of 42.83% since the 2000 Census).
At the time of the 2010 Census, Eureka had a population of 10,189 people. This makes Eureka the county's 20th most populous community.
The population of Eureka represents 0.17% of the population of Missouri (which has 5,988,927 people), making it the state's 76th most populous community.
With a 2010 count of 10,189 people, the population of Eureka increased 32.74% from the 2000 Census (with a count of 7,676 people).
More information can be found on the Census Page for Eureka.
Communities Also Named Eureka ...
While we believe that this Eureka is located in Saint Louis County, we know of another 3 Missouri communities named Eureka. Those communities are located in the following counties: Boone, Perry and Putnam County.
Beyond Missouri, there are 68 communities that are also named Eureka - they are located in Alabama (2), Alaska (2), California (2), Colorado, Florida (2), Georgia (3), Illinois, Indiana (3), Iowa (3), Kansas (6), Kentucky, Louisiana, Maine, Michigan (2), Minnesota, Mississippi, Montana (2), Nebraska, Nevada (2), New York, North Carolina, Nova Scotia, Nunavut, Ohio (2), Oklahoma, Ontario, Pennsylvania (2), South Carolina (2), South Dakota, Tennessee (4), Texas (5), Utah, Virginia, Washington (2), West Virginia and Wisconsin.
For more information, see our Tidbits & Trivia Page for Eureka.
Communities near Eureka ...
We have created a list of 10 communities that are near Eureka.
- O'Fallon
(19 miles [30.6 km] to the north)- Note: The GPS coordinates that we are using for O'Fallon have been provided by the GNIS.<2> The coordinates still need to be verified.
- Jump to our Gazetteer entry for O'Fallon
- O'Fallon is located in Saint Charles County
- Population from the 2020 Census: 89,769 people
- Jump to TripAdvisor's Tourism page for O'Fallon <7>
- Saint Peters
(19 miles [30.6 km] to the north)- Jump to our Gazetteer entry for Saint Peters
- Saint Peters is located in Saint Charles County
- Population from the 2020 Census: 58,043 people
- Jump to TripAdvisor's Tourism page for Saint Peters <7>
- Chesterfield
(12 miles [19.3 km] to the north)- Jump to our Gazetteer entry for Chesterfield
- Chesterfield is located in Saint Louis County
- Population from the 2020 Census: 47,570 people
- Jump to TripAdvisor's Tourism page for Chesterfield <7>
- Ballwin
(8 miles [12.9 km] to the northeast)- Note: The GPS coordinates that we are using for Ballwin have been provided by the GNIS.<2> The coordinates still need to be verified.
- Jump to our Gazetteer entry for Ballwin
- Ballwin is located in Saint Louis County
- Population from the 2020 Census: 30,094 people
- Jump to TripAdvisor's Tourism page for Ballwin <7>
- Kirkwood
(14 miles [22.5 km] to the northeast)- Jump to our Gazetteer entry for Kirkwood
- Kirkwood is located in Saint Louis County
- Population from the 2020 Census: 27,866 people
- Maryland Heights
(17 miles [27.4 km] to the northeast)- Note: The GPS coordinates that we are using for Maryland Heights have been provided by the GNIS.<2> The coordinates still need to be verified.
- Jump to our Gazetteer entry for Maryland Heights
- Maryland Heights is located in Saint Louis County
- Population from the 2020 Census: 26,895 people
- Webster Groves
(16 miles [25.7 km] to the east)- Note: The GPS coordinates that we are using for Webster Groves have been provided by the GNIS.<2> The coordinates still need to be verified.
- Jump to our Gazetteer entry for Webster Groves
- Webster Groves is located in Saint Louis County
- Population from the 2020 Census: 22,896 people
- Arnold
(15 miles [24.1 km] to the east)- Note: The GPS coordinates that we are using for Arnold have been provided by the GNIS.<2> The coordinates still need to be verified.
- Jump to our Gazetteer entry for Arnold
- Arnold is located in Jefferson County
- Population from the 2020 Census: 21,145 people
- Jump to TripAdvisor's Tourism page for Arnold <7>
- Creve Coeur
(15 miles [24.1 km] to the northeast)- Note: The GPS coordinates that we are using for Creve Coeur have been provided by the GNIS.<2> The coordinates still need to be verified.
- Jump to our Gazetteer entry for Creve Coeur
- Creve Coeur is located in Saint Louis County
- Population from the 2020 Census: 18,624 people
- Manchester
(9 miles [14.5 km] to the northeast)- Note: The GPS coordinates that we are using for Manchester have been provided by the GNIS.<2> The coordinates still need to be verified.
- Jump to our Gazetteer entry for Manchester
- Manchester is located in Saint Louis County
- Population from the 2020 Census: 18,081 people
- Jump to TripAdvisor's Tourism page for Manchester <7>
To Help With Your Genealogy Research ...
We have a couple of sections for those tracing their genealogy.
We created a list of cemeteries that are in the area around Eureka. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Eureka.
Using the information from an 1895 Atlas, we've created a list of communities that were in the area of Eureka. Our list includes information such as whether the 1895 community had a post office or railroad service. See our List of 1890's Communities around Eureka.
We also have a detailed list of newspapers that have been published in the area around Eureka. See our Newspapers Page for Eureka.
TripAdvisor Tourism Pages for Eureka ...
Looking for more information about Eureka? A wonderful source is the TripAdvisor website. We always start with the TripAdvisor Tourism page, where you can read an overview with links that will help you find lodging, restaurants and attractions.
In addition to the Tourism page for Eureka, there are neighboring communities that also have Tourism pages. More information about those communities can be found on our TripAdvisor Page for Eureka.
Adding Eureka to Our Gazetteer ...
We originally found mention of Eureka in both the FIPS-55 and the GNIS. For more information, see the FIPS and GNIS Codes sections on our Miscellaneous Page.
From our notes, the earliest published mention we've found for Eureka was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<8>
From that list, the Eureka post office opened in 1860.
We also found Eureka in the book titled List of Post Offices in the United States (1870).
For more details, see References and Mentions for Eureka.
Off-the-Road Links ...
The official website for Eureka: www.eureka.mo.us/
The official website for Saint Louis County: www.co.st-louis.mo.us/
The official website for State of Missouri: https://www.mo.gov/
Footnotes ...
| <1> | If you're interested in how the shape of Missouri's counties, including Saint Louis, have changed over time, we recommend the Atlas of Historical County Boundaries. |
| <2> | The location has been supplied by the Geographic Names Information System - which is maintained by the U.S. Geological Survey (USGS). While these values should be definitive, we found that accuracy can vary and you should double-check the location if accuracy is required. |
| <3> | A demonym is the name for a resident of a community which is usually derived from (or is related to) the name of that community. In other words, it's how the residents of Eureka refer to themselves. It's important to note that there aren't any rules for taking a city's name and turning it into a demonym. A demonym is informal and while the majority of Eureka may use one name, keep in mind that others may use something different. |
| <4> | Population counts have been provided by the U.S. Census Bureau. For more detail, please visit our Census Page for Eureka. |
| <5> | The elevation is an estimate for the area around Eureka - it will be higher in some places and lower in others. |
| <6> | ZIP Codes have been created by the United States Postal Service (USPS) as a way of grouping addresses to make delivery more efficient. The boundaries of the ZIP Code can be changed, re-assigned, eliminated or overlapped with other ZIP Codes. So keep in mind that any given ZIP Code is only 'loosely' associated with a city (such as Eureka). When looking for a ZIP Code, whether Eureka or elsewhere, it's always best to check the website of the United States Postal Service (USPS). |
| <7> | While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program. |
| <8> | A copy of their list with background information can be found at: https://cblevins.github.io/us-post-offices/data-biography/ |