Welcome to Union ...
The city of Union is located in Franklin County<1> and is the County Seat for Franklin County.
The location of Union has been provided by the Geographic Names Information System (the GNIS).<2>
While we don't have a date for the founding of Union, you might consider that their post office opened in 1827.
From the Census Estimates for 2019, Union has a population of 11,968 people<3> (see below for details).
Union is 510 feet [155 m] above sea level.<4>.
Time Zone: Union lies in the Central Time Zone (CST/CDT) and observes daylight saving time
Area Code for Union: 636
The ZIP code for Union: 63084<5>
Websites for Union ...
Official Website: www.ci.union.mo.us/
Chamber of Commerce: www.unionmochamber.org/
Population Details ...
Taken from the 2019 Census Estimates, Union had an population of 11,968 people. This is an increase of 17.29% since the 2010 Census (or an increase of 54.29% since the 2000 Census).
At the time of the 2010 Census, Union had a population of 10,204 people (or 10.06% of the total population of Franklin County). This makes Union the county's 2nd most populous community.
The population of Union represents 0.17% of the population of Missouri (which has 5,988,927 people), making it the state's 75th most populous community.
With a 2010 count of 10,204 people, the population of Union increased 31.55% from the 2000 Census (which had a count of 7,757 people).
More information can be found on the Census Page for Union.
Communities Also Named Union ...
While we believe that this Union is located in Franklin County, we know of another 2 Missouri communities named Union. Those communities are located in the following counties: Clark and Ray County.
Beyond Missouri, there are 121 communities that are also named Union - they are located in Alabama (10), Arizona, Arkansas (5), California (3), Colorado, Connecticut, Florida, Georgia (10), Illinois (5), Indiana, Iowa (2), Kansas (5), Kentucky (3), Louisiana, Maine, Michigan, Minnesota, Mississippi (6), Montana, Nebraska, Nevada, New Hampshire, New Jersey (3), New Mexico, New York (3), North Carolina (5), North Dakota, Nova Scotia, Ohio (3), Oklahoma (3), Ontario (4), Oregon, Pennsylvania, Prince Edward Island, South Carolina (4), Tennessee (6), Texas (9), Utah, Virginia (2), Washington (2), West Virginia (3) and Wisconsin (3).
For more information, see our Tidbits & Trivia Page for Union.
Communities near Union ...
We have created a list of 10 communities that are near Union.
- Wildwood
(19 miles [30.6 km] to the northeast)- Note: The GPS coordinates that we are using for Wildwood have been provided by the GNIS.<2> The coordinates still need to be verified.
- Jump to our Gazetteer entry for Wildwood
- Wildwood is located in Saint Louis County
- Population from the 2020 Census: 35,460 people
- Jump to TripAdvisor's Tourism page for Wildwood <6>
- Washington
(8 miles [12.9 km] to the north)- Jump to our Gazetteer entry for Washington
- Washington is located in Franklin County
- Population from the 2020 Census: 14,243 people
- Jump to TripAdvisor's Tourism page for Washington <6>
- Sullivan
(18 miles [29 km] to the southwest)- Note: The GPS coordinates that we are using for Sullivan have been provided by the GNIS.<2> The coordinates still need to be verified.
- Jump to our Gazetteer entry for Sullivan
- Sullivan is located in Franklin County
- Population from the 2020 Census: 7,117 people
- Jump to TripAdvisor's Tourism page for Sullivan <6>
- Pacific
(13 miles [20.9 km] to the east)- Note: The GPS coordinates that we are using for Pacific have been provided by the GNIS.<2> The coordinates still need to be verified.
- Jump to our Gazetteer entry for Pacific
- Pacific is located in Franklin County
- Population from the 2020 Census: 7,097 people
- Former name for Pacific:
- Franklin
- Jump to TripAdvisor's Tourism page for Pacific <6>
- Saint Clair
(6 miles [9.7 km] to the south)- Note: The GPS coordinates that we are using for Saint Clair have been provided by the GNIS.<2> The coordinates still need to be verified.
- Jump to our Gazetteer entry for Saint Clair
- Saint Clair is located in Franklin County
- Population from the 2020 Census: 4,689 people
- Jump to TripAdvisor's Tourism page for Saint Clair <6>
- New Haven
(16 miles [25.7 km] to the northwest)- Note: The GPS coordinates that we are using for New Haven have been provided by the GNIS.<2> The coordinates still need to be verified.
- Jump to our Gazetteer entry for New Haven
- New Haven is located in Franklin County
- Population from the 2020 Census: 2,076 people
- Jump to TripAdvisor's Tourism page for New Haven <6>
- Gerald
(18 miles [29 km] to the west)- Jump to our Gazetteer entry for Gerald
- Gerald is located in Franklin County
- Population from the 2020 Census: 1,327 people
- Jump to TripAdvisor's Tourism page for Gerald <6>
- Marthasville
(13 miles [20.9 km] to the north)- Jump to our Gazetteer entry for Marthasville
- Marthasville is located in Warren County
- Population from the 2020 Census: 1,198 people
- Jump to TripAdvisor's Tourism page for Marthasville <6>
- Parkway
(7 miles [11.3 km] to the south) - Oak Grove
(17 miles [27.4 km] to the southwest)- Jump to our Gazetteer entry for Oak Grove
- Oak Grove is located in Franklin County
- Population from the 2020 Census: 478 people
- Oak Grove has also been known as:
- Oak Grove Village
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 Union. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Union.
Using the information from an 1895 Atlas, we've created a list of communities that were in the area of Union. 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 Union.
We also have a detailed list of newspapers that have been published in the area around Union. Our list includes 11 papers. See our Newspapers Page for Union.
TripAdvisor Tourism Pages for Union ...
Looking for more information about Union? 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 Union, there are neighboring communities that also have Tourism pages. More information about those communities can be found on our TripAdvisor Page for Union.
Adding Union to Our Gazetteer ...
We originally found mention of Union 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 Union was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<7>
From that list, the Union post office opened in 1827.
We also found Union in the book titled U.S. Post Offices (Oct. 1846).
For more details, see References and Mentions for Union.
Off-the-Road Links ...
The official website for Union: www.ci.union.mo.us/
The official website for Franklin County: www.franklinmo.org/
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 Franklin, 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> | Population counts have been provided by the U.S. Census Bureau. For more detail, please visit our Census Page for Union. |
| <4> | The elevation is an estimate for the area around Union - it will be higher in some places and lower in others. |
| <5> | 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 Union). When looking for a ZIP Code, whether Union or elsewhere, it's always best to check the website of the United States Postal Service (USPS). |
| <6> | While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program. |
| <7> | A copy of their list with background information can be found at: https://cblevins.github.io/us-post-offices/data-biography/ |