RoadsideThoughts
A Gazetteer for the United States and Canada
Home >> State of Idaho >> Bonneville County >> Idaho FallsIndex...

Welcome to Idaho Falls ...

The city of Idaho Falls is located in Bonneville County<1> (at the time of its founding, Idaho Falls was located in Bingham County) and is the County Seat for Bonneville County.

The pronunciation of Idaho Falls: EYE-da-hoe<2>

Idaho Falls was established in 1864.

From the  Census Estimates for 2019, Idaho Falls has a population of 63,044 people<3> (see below for details).

The community of Idaho Falls is 4,710 feet [1,436 m] above sea level.<4> In other words, the elevation of Idaho Falls is about ¾ mile [or ~1½ km] above sea level.

Time Zone: Idaho Falls lies in the Mountain Time Zone (MST/MDT) and observes daylight saving time

Area Codes for Idaho Falls: 208 & 986<5>

The ZIP codes for Idaho Falls: 83401-83406, 83415<6>

Population Details ...

Taken from the 2019 Census Estimates, Idaho Falls had an population of 63,044 people. This is an increase of 10.97% since the 2010 Census (or an increase of 24.27% since the 2000 Census).

At the time of the 2010 Census, Idaho Falls had a population of 56,813 people (which is 54.28% of the total population of Bonneville County). This makes Idaho Falls the county's most populous community.

The population of Idaho Falls represents 3.62% of the total population of Idaho (which has 1,567,582 people), making it the state's 4th most populous community.

With a 2010 count of 56,813 people, the population of Idaho Falls increased 11.99% from the 2000 Census (with a count of 50,730 people).

More information can be found on the Census Page for Idaho Falls.

Websites for Idaho Falls ...

Official Website:   www.ci.idaho-falls.id.us/

Chamber of Commerce:   www.idahofallschamber.com/

Communities near Idaho Falls ...

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

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

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

We also have a detailed list of newspapers that have been published in the area around Idaho Falls. Our list includes 6 papers. See our Newspapers Page for Idaho Falls.

TripAdvisor Tourism Pages for Idaho Falls ...

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

Adding Idaho Falls to Our Gazetteer ...

We originally found mention of Idaho Falls 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 Idaho Falls was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<8>

From that list, the Idaho Falls post office opened in 1890.

For more details, see References and Mentions for Idaho Falls.

Footnotes ...

<1>If you're interested in how the shape of Idaho's counties, including Bonneville, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>The pronunciation we've provided is our attempt to give a phonetic pronunciation for Idaho Falls. While it might not be exactly right, hopefully it will be close. If we have it wrong or there's a better way to pronounce the name, please contact us through our Feedback Page.
<3>Population counts have been provided by the U.S. Census Bureau. For more detail, please visit our Census Page for Idaho Falls.
<4>The elevation is an estimate for the area around Idaho Falls - it will be higher in some places and lower in others.
<5>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 208 code has been Overlayed with the 986 area code. New phone numbers in the Idaho Falls area will be assigned with one of these codes: 208 or 986. As a result, placing a call in the Idaho Falls area will require 10-digit dialing (where you enter both the area code and then the phone number).
<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 Idaho Falls). When looking for a ZIP Code, whether Idaho Falls or elsewhere, it's always best to check the website of the United States Postal Service (USPS).

Our list of ZIP Codes for Idaho Falls includes: 83401, 83402, 83403, 83404, 83405 & 83406.
<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 the Blevins & Helbock Post Office list with background information can be found at:

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