Welcome to Sylvan ...

Sylvan is located in Dent County<1>.

While we don't have a date for the founding of Sylvan, you might consider that their post office opened in 1854.

Time Zone: Sylvan lies in the Central Time Zone (CST/CDT) and observes daylight saving time

Area Codes for Sylvan: 573 & 235<2>

Communities Also Named Sylvan ...

Using our Gazetteer, we found that there are 16 communities that are also named Sylvan - they are located in Alabama, Colorado, Illinois, Kansas, Manitoba, Michigan, Minnesota, New York, Ontario, Oregon, Pennsylvania (3), Texas, Washington and Wisconsin.

For more information, see our Tidbits & Trivia Page for Sylvan.

Adding Sylvan to Our Gazetteer ...

We originally found mention of Sylvan in the GNIS. For more information, see the Referenced GNIS Codes section on our Miscellaneous Page.

From our notes, the earliest published mention we've found for Sylvan was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<3>

From that list, the Sylvan post office opened in 1854.

For more details, see References and Mentions for Sylvan.

Footnotes ...

<1>	If you're interested in how the shape of Missouri's counties, including Dent, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>	When there's a risk of an area code running out of phone numbers, an 'Overlay Area Code' is created that has the same geographic boundaries as the existing area code. In this case, the 573 code has been Overlayed with the 235 area code. New phone numbers in the Sylvan area will be assigned with one of these codes: 573 or 235. As a result, placing a call in the Sylvan area will require 10-digit dialing (where you enter both the area code and then the phone number).
<3>	A copy of their list with background information can be found at: https://cblevins.github.io/us-post-offices/data-biography/