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Welcome to Irwin ...

The city of Irwin is located in Shelby County<1>.

While we don't have a date for the founding of Irwin, you might consider that their post office opened  in 1882.

From the  Census Estimates for 2019, Irwin has a population of 312 people<2> (see below for details).

Irwin is 1,280 feet [390 m] above sea level.<3>.

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

Area Code for Irwin: 712

The ZIP code for Irwin: 51446<4>

Population Details ...

Taken from the 2019 Census Estimates, Irwin had an population of 312 people. This is a decrease of 8.5% since the 2010 Census (or a decrease of 16.13% since the 2000 Census).

At the time of the 2010 Census, Irwin had a population of 341 people. This makes Irwin the county's 5th most populous community.

The population of Irwin represents 0.01% of the population of Iowa (which has 3,046,355 people), making it the state's 554th most populous community.

With a 2010 count of 341 people, the population of Irwin decreased 8.33% from the 2000 Census (which had a count of 372 people).

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

Communities Also Named Irwin ...

Using our Gazetteer, we found that there are 18 communities that are also named Irwin - they are located in Arkansas, California, Colorado, Idaho, Illinois, Kansas, Kentucky, Mississippi, Missouri, Nebraska, Ohio (2), Pennsylvania, South Carolina, Tennessee, Texas, Virginia and Washington.

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

Communities near Irwin ...

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

  • Denison
    (17 miles [27.4 km] to the northwest)
    • Note: The GPS coordinates that we are using for Denison have been provided by the GNIS.<5> The coordinates still need to be verified.
    • Jump to our Gazetteer entry for Denison
    • Denison is located in Crawford County
    • Population from the 2020 Census: 8,249 people
    • Jump to TripAdvisor's Tourism page for Denison <6>
  • Harlan
    (11 miles [17.7 km] to the southwest)
  • Audubon
    (15 miles [24.1 km] to the east)
  • Manning
    (11 miles [17.7 km] to the northeast)
    • Note: The GPS coordinates that we are using for Manning have been provided by the GNIS.<5> The coordinates still need to be verified.
    • Jump to our Gazetteer entry for Manning
    • Manning is located in Carroll County
    • Population from the 2020 Census: 1,403 people
    • Jump to TripAdvisor's Tourism page for Manning <6>
  • Manilla
    (6 miles [9.7 km] to the north)
  • Elk Horn
    (15 miles [24.1 km] to the southeast)
    • Note: The GPS coordinates that we are using for Elk Horn have been provided by the GNIS.<5> The coordinates still need to be verified.
    • Jump to our Gazetteer entry for Elk Horn
    • Elk Horn is located in Shelby County
    • Population from the 2020 Census: 601 people
    • Jump to TripAdvisor's Tourism page for Elk Horn <6>
  • Dow City
    (17 miles [27.4 km] to the northwest)
    • Note: The GPS coordinates that we are using for Dow City have been provided by the GNIS.<5> The coordinates still need to be verified.
    • Jump to our Gazetteer entry for Dow City
    • Dow City is located in Crawford County
    • Population from the 2020 Census: 486 people
    • Jump to TripAdvisor's Tourism page for Dow City <6>
  • Vail
    (18 miles [29 km] to the north)
    • Note: The GPS coordinates that we are using for Vail have been provided by the GNIS.<5> The coordinates still need to be verified.
    • Jump to our Gazetteer entry for Vail
    • Vail is located in Crawford County
    • Population from the 2020 Census: 413 people
    • Jump to TripAdvisor's Tourism page for Vail <6>
  • Earling
    (10 miles [16.1 km] to the west)
    • Note: The GPS coordinates that we are using for Earling have been provided by the GNIS.<5> The coordinates still need to be verified.
    • Jump to our Gazetteer entry for Earling
    • Earling is located in Shelby County
    • Population from the 2020 Census: 403 people
  • Templeton
    (16 miles [25.7 km] to the northeast)
    • Note: The GPS coordinates that we are using for Templeton have been provided by the GNIS.<5> The coordinates still need to be verified.
    • Jump to our Gazetteer entry for Templeton
    • Templeton is located in Carroll County
    • Population from the 2020 Census: 329 people
    • Jump to TripAdvisor's Tourism page for Templeton <6>

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

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

We also have a detailed list of newspapers that have been published in the area around Irwin. See our Newspapers Page for Irwin.

TripAdvisor Tourism Pages for Irwin ...

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

Adding Irwin to Our Gazetteer ...

We originally found mention of Irwin 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 Irwin was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<7>

X2X - From that list, the Irwin post office opened in 1882.

We also found Irwin in the book titled Business Atlas and Shippers' Guide (1895).

For more details, see References and Mentions for Irwin.

Unfortunately, we don't know of a website for Irwin. If you can help, please contact us through our Feedback Page.

The official website for Shelby County: www.shco.org/

The official website for State of Iowa: https://www.iowa.gov/

Footnotes ...

<1>If you're interested in how the shape of Iowa's counties, including Shelby, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>Population counts have been provided by the U.S. Census Bureau. For more detail, please visit our Census Page for Irwin.
<3>The elevation is an estimate for the area around Irwin - it will be higher in some places and lower in others.
<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 city (such as Irwin). When looking for a ZIP Code, whether Irwin or elsewhere, it's always best to check the website of the United States Postal Service (USPS).
<5>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.
<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/









 

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This page was last modified/updated: 28 Apr 2025