RoadsideThoughts
A Gazetteer for the United States and Canada
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Welcome to Monrovia ...

Monrovia is located in Frederick County<1>.

While we don't have a date for the founding of Monrovia, you might consider that their post office opened in 1833.

Monrovia is 410 feet [125 m] above sea level.<2>.

Time Zone: Monrovia lies in the Eastern Time Zone (EST/EDT) and observes daylight saving time

Area Codes for Monrovia: 301, 227 & 240<3>

The ZIP code for Monrovia: 21770<4>

Communities Also Named Monrovia ...

Using our Gazetteer, we found that there are 6 communities that are also named Monrovia - they are located in Alabama, California, Indiana, Kansas (2) and Virginia.

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

Websites for Monrovia ...

Chamber of Commerce:   www.frederickchamber.org/

Although we don't have any websites that are specific to Monrovia, the following might be of interest:

Communities near Monrovia ...

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

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

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

TripAdvisor Tourism Pages for Monrovia ...

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

Adding Monrovia to Our Gazetteer ...

We originally found mention of Monrovia 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 Monrovia was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<6>

From that list, the Monrovia post office opened in 1833.

For more details, see References and Mentions for Monrovia.

Footnotes ...

<1>If you're interested in how the shape of Maryland's counties, including Frederick, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>The elevation is an estimate for the area around Monrovia - it will be higher in some places and lower in others.
<3>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 301 code has been Overlayed with one of the following codes: 227 or 240. New phone numbers in the Monrovia area will be assigned with one of these codes: 301, 227 or 240. As a result, placing a call in the Monrovia area will require 10-digit dialing (where you enter both the area code and then the phone number).
<4>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 community (such as Monrovia). When looking for a ZIP Code, whether Monrovia or elsewhere, it's always best to check the website of the United States Postal Service (USPS).
<5>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.
<6>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/