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A Gazetteer for the United States and Canada
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The Commemorative
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The Commemorative Quarter for Oregon







Welcome to Arock ...

Arock is located in Malheur County<1>.

While we don't have a date for the founding of Arock, you might consider that their post office opened  in 1926.

Arock is 3,720 feet [1,134 m] above sea level.<2> In other words, the altitude of Arock is about ¾ mile [or ~1¼ km] above sea level.

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

Note: If you travel west from Arock, you will leave Mountain Time and cross into the Pacific Time Zone (PST/PDT).

Area Codes for Arock: 541 & 458<3>

The ZIP code for Arock: 97902<4>

To Help With Your Genealogy Research ...

We have a couple of sections for those tracing their genealogy.

We're compiling a list of cemeteries that are in the area around Arock. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Arock.

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

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

TripAdvisor Tourism Pages for Arock ...

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

Adding Arock to Our Gazetteer ...

We originally found mention of Arock 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 Arock was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<5>

X2X - From that list, the Arock post office opened in 1926.

For more details, see References and Mentions for Arock.

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

The official website for Malheur County: www.malheurco.org/

The official website for State of Oregon: https://www.oregon.gov/

Footnotes ...

<1>If you're interested in how the shape of Oregon's counties, including Malheur, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>The elevation is an estimate for the area around Arock - 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 541 code has been Overlayed with the 458 area code. New phone numbers in the Arock area will be assigned with one of these codes: 541 or 458. As a result, placing a call in the Arock 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 Arock). When looking for a ZIP Code, whether Arock or elsewhere, it's always best to check the website of the United States Postal Service (USPS).
<5>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