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The Commemorative
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The Commemorative Quarter for Washington

Welcome to Union Gap ...

The city of Union Gap is located in Yakima County<1>.

From the  Census Estimates for 2019, Union Gap has a population of 6,204 people<2> (see below for details).

Union Gap is 990 feet [302 m] above sea level.<3>.

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

The area code for Union Gap: (509)

The ZIP code for Union Gap: 98903<4>

Websites for Union Gap ...

Official Website:

Population Details ...

Taken from the 2019 Census Estimates, Union Gap had an population of 6,204 people. This is an increase of 2.6% since the 2010 Census (or an increase of 10.37% since the 2000 Census).

At the time of the 2010 Census, Union Gap had a population of 6,047 people. This makes Union Gap the county's 6th most populous community.

The population of Union Gap represents 0.09% of the total population of Washington (which has 6,724,540 people), making it the state's 110th most populous community.

With a 2010 count of 6,047 people, the population of Union Gap increased 7.58% from the 2000 Census (which had a count of 5,621 people).

More information can be found on the Census Page for Union Gap.

Communities Also Named Union Gap ...

Using our Gazetteer, we found another community named Union Gap - it's located in Oregon.

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

Communities near Union Gap ...

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

  • Toppenish
    (14 miles [22.5 km] to the southeast)
  • Selah
    (7 miles [11.3 km] to the north)
  • Wapato
    (7 miles [11.3 km] to the south)
  • Granger
    (19 miles [30.6 km] to the southeast)
  • Zillah
    (14 miles [22.5 km] to the southeast)
  • Tieton
    (16 miles [25.7 km] to the northwest)
  • Naches
    (16 miles [25.7 km] to the northwest)
  • Harrah
    (10 miles [16.1 km] to the south)
  • Moxee City
    (4 miles [6.4 km] to the east)
    • Note: The GPS coordinates that we are using for Moxee City have been provided by the GNIS.<6> The coordinates still need to be verified.
    • Jump to our Gazetteer entry for Moxee City
    • Moxee City is located in Yakima County
    • Jump to a Google Map centered on Moxee City
  • Moxee
    (4 miles [6.4 km] to the east)

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

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

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

TripAdvisor Tourism Pages for Union Gap ...

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

Adding Union Gap to Our Gazetteer ...

We originally found mention of Union Gap 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 Union Gap was mentioned on a train schedule titled Union Pacific Railroad Time Tables (September 1924).

We also found Union Gap mentioned on a train schedule titled Union Pacific Railroad Time Tables (June 1939).

For more details, see References and Mentions for Union Gap.

The official website for Union Gap:

The official website for Yakima County:

The official website for State of Washington:

Footnotes ...

<1>If you're interested in how the shape of Washington's counties, including Yakima, 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 Union Gap.
<3>The elevation is an estimate for the area around Union Gap - 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 Union Gap). When looking for a ZIP Code, whether Union Gap 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>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.




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This page was last modified/updated: 28 Nov 2023