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A Gazetteer for the United States and Canada
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Welcome to Leavenworth ...

The city of Leavenworth is located in Leavenworth County<1> and is the County Seat for Leavenworth County.

While we don't have a date for the founding of Leavenworth, you might consider that their post office opened in 1871.

The origin (or the toponymy) of Leavenworth: Named for Henry Leavenworth (1783-1834), an officer during the War of 1812.

When the people of Leavenworth refer to themselves (known as a demonym), they frequently use Leavenworthean<2>

From the  Census Estimates for 2019, Leavenworth has a population of 36,027 people<3> (see below for details).

Leavenworth is 850 feet [259 m] above sea level.<4>.

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

Area Code for Leavenworth: 913

The ZIP code for Leavenworth: 66048<5>

Population Details ...

Taken from the 2019 Census Estimates, Leavenworth had an population of 36,027 people. This is an increase of 2.2% since the 2010 Census (or an increase of 1.71% since the 2000 Census).

At the time of the 2010 Census, Leavenworth had a population of 35,251 people (or 46.07% of the total population of Leavenworth County). This makes Leavenworth the county's most populous community.

The population of Leavenworth represents 1.24% of the population of Kansas (which has 2,853,118 people), making it the state's 12th most populous community.

With a 2010 count of 35,251 people, the population of Leavenworth has remained roughly the same as the 2000 Census (which had a count of 35,420 people).

More information can be found on the Census Page for Leavenworth.

Communities Also Named Leavenworth ...

Using our Gazetteer, we found that there are 3 communities that are also named Leavenworth - they are located in Indiana, Minnesota and Washington.

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

Websites for Leavenworth ...

Official Website:   www.lvks.org/

Chamber of Commerce:   www.lvarea.com/LLCofC.htm/

Communities near Leavenworth ...

We have created a list of 10 communities that are near Leavenworth.

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 Leavenworth. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Leavenworth.

Using the information from an 1895 Atlas, we've created a list of communities that were in the area of Leavenworth. 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 Leavenworth.

We also have a detailed list of newspapers that have been published in the area around Leavenworth. Our list includes 127 papers. See our Newspapers Page for Leavenworth.

TripAdvisor Tourism Pages for Leavenworth ...

Looking for more information about Leavenworth? 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 Leavenworth, there are neighboring communities that also have Tourism pages. More information about those communities can be found on our TripAdvisor Page for Leavenworth.

Adding Leavenworth to Our Gazetteer ...

We originally found mention of Leavenworth 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 (so far) for Leavenworth was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<7>

From that list, the Leavenworth post office opened in 1871.

For more details, see References and Mentions for Leavenworth.

Footnotes ...

<1>If you're interested in how the shape of Kansas' counties, including Leavenworth, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>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 Leavenworth 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 Leavenworth may use one name, keep in mind that others may use something different.
<3>Population counts have been provided by the U.S. Census Bureau. For more detail, please visit our Census Page for Leavenworth.
<4>The elevation is an estimate for the area around Leavenworth - 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 Leavenworth). When looking for a ZIP Code, whether Leavenworth 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 the Blevins & Helbock Post Office list with background information can be found at:

      https://cblevins.github.io/us-post-offices/data-biography/