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The Commemorative
Quarter for
Washington

The Commemorative Quarter for Washington





Welcome to Ilwaco ...

The coastal city of Ilwaco is located on the Oregon border (on the Columbia River).

Ilwaco is located in Pacific County<1>.

The pronunciation of Ilwaco: il-WAH-koh<2>

While we don't have a date for the founding of Ilwaco, you might consider that their post office opened  in 1876.

From the  Census Estimates for 2019, Ilwaco has a population of 986 people<3> (see below for details).

The community of Ilwaco is near sea level<4>.

Time Zone: Ilwaco lies in the Pacific Time Zone (PST/PDT) and observes daylight saving time

Area Codes for Ilwaco: 360 & 564<5>

The ZIP code for Ilwaco: 98624<6>

Population Details ...

Taken from the 2019 Census Estimates, Ilwaco had an population of 986 people. This is an increase of 5.34% since the 2010 Census (or an increase of 3.79% since the 2000 Census).

At the time of the 2010 Census, Ilwaco had a population of 936 people. This makes Ilwaco the county's 4th most populous community.

The population of Ilwaco represents 0.01% of the population of Washington (which has 6,724,540 people), making it the state's 203rd most populous community.

With a 2010 count of 936 people, the population of Ilwaco decreased 1.47% from the 2000 Census (which had a count of 950 people).

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

Websites for Ilwaco ...

Official Website: www.ilwacowashington.com/

Communities near Ilwaco ...

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

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

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

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

TripAdvisor Tourism Pages for Ilwaco ...

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

Adding Ilwaco to Our Gazetteer ...

We originally found mention of Ilwaco 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 Ilwaco was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<10>

X2X - From that list, the Ilwaco post office opened in 1876.

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

For more details, see References and Mentions for Ilwaco.

The official website for Ilwaco: www.ilwacowashington.com/

The official website for Pacific County: www.co.pacific.wa.us/

The official website for State of Washington: https://wa.gov/

Footnotes ...

<1>If you're interested in how the shape of Washington's counties, including Pacific, 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 Ilwaco. 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 Ilwaco.
<4>The elevation is an estimate for the area around Ilwaco - 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 360 code has been Overlayed with the 564 area code. New phone numbers in the Ilwaco area will be assigned with one of these codes: 360 or 564. As a result, placing a call in the Ilwaco 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 Ilwaco). When looking for a ZIP Code, whether Ilwaco or elsewhere, it's always best to check the website of the United States Postal Service (USPS).
<7>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.
<8>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.
<9>An 'estimated' location is one where we have been given GPS coordinates, but are unable to verify the accuracy of those coordinates. That said, we have some confidence that we have placed the marker near the actual location. A typical reason for being unable to verify a location is that it might be on private property or maybe historic and gone without an obvious trace.
<10>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: 29 Apr 2025