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A Gazetteer for the United States and Canada
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Welcome to Diamond ...

The village of Diamond is primarily located in Grundy County<1>. A portion of Diamond extends into Will County.

While we don't have a date for the founding of Diamond, you might consider that their post office opened in 1872.

From the  Census Estimates for 2019, Diamond has a population of 2,502 people<2> (see below for details).

Diamond is 560 feet [171 m] above sea level.<3>.

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

Area Codes for Diamond: 815 & 779<4>

The ZIP code for Diamond: 60416<5>

Population Details ...

Taken from the 2019 Census Estimates, Diamond had an population of 2,502 people. This is a decrease of 0.99% since the 2010 Census (or an increase of 79.61% since the 2000 Census).

At the time of the 2010 Census, Diamond had a population of 2,527 people (which is 5.04% of the total population of Grundy County). This makes Diamond the county's 5th most populous community.

The population of Diamond represents 0.02% of the total population of Illinois (which has 12,830,632 people), making it the state's 448th most populous community.

With a 2010 count of 2,527 people, the population of Diamond increased 81.41% from the 2000 Census (which had a count of 1,393 people).

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

Communities Also Named Diamond ...

Using our Gazetteer, we found that there are 39 communities that are also named Diamond - they are located in Alabama, Alaska, Arkansas, British Columbia, California (3), Florida, Georgia, Idaho, Indiana (2), Iowa (2), Kentucky, Louisiana, Mississippi, Missouri (3), Nevada, New York, Nova Scotia, Ohio (2), Oregon, Pennsylvania (2), Quebec, South Dakota, Tennessee, Utah, Virginia, Washington, West Virginia (3) and Wyoming (2).

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

Communities near Diamond ...

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

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

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

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

TripAdvisor Tourism Pages for Diamond ...

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

Adding Diamond to Our Gazetteer ...

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

From that list, the Diamond post office opened in 1872. The Diamond post office closed in 1909.

For more details, see References and Mentions for Diamond.

Footnotes ...

<1>If you're interested in how the shape of Illinois' counties, including Grundy, 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 Diamond.
<3>The elevation is an estimate for the area around Diamond - it will be higher in some places and lower in others.
<4>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 815 code has been Overlayed with the 779 area code. New phone numbers in the Diamond area will be assigned with one of these codes: 815 or 779. As a result, placing a call in the Diamond area will require 10-digit dialing (where you enter both the area code and then the phone number).
<5>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 village (such as Diamond). When looking for a ZIP Code, whether Diamond or elsewhere, it's always best to check the website of the United States Postal Service (USPS).
<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 the Blevins & Helbock Post Office list with background information can be found at:

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