RoadsideThoughts
A Gazetteer for the United States and Canada
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Welcome to Onarga ...

The village of Onarga is located in Iroquois County<1>.

The pronunciation of Onarga: oh-NAHR-guh<2>

While we don't have a date for the founding of Onarga, you might get a feel for it by knowing that the earliest mention that we've found (so far) was on a map dated 1881.

From the  Census Estimates for 2019, Onarga has a population of 1,260 people<3> (see below for details).

Onarga is 670 feet [204 m] above sea level.<4>.

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

Note: If you travel east from Onarga (for example, toward Earl Park (IN)), you will leave Central Time and cross into the Eastern Time Zone (EST/EDT).

Area Codes for Onarga: 815 & 779<5>

The ZIP code for Onarga: 60955<6>

Population Details ...

Taken from the 2019 Census Estimates, Onarga had an population of 1,260 people. This is a decrease of 7.89% since the 2010 Census (or a decrease of 12.38% since the 2000 Census).

At the time of the 2010 Census, Onarga had a population of 1,368 people. This makes Onarga the county's 4th most populous community.

The population of Onarga represents 0.01% of the total population of Illinois (which has 12,830,632 people), making it the state's 583rd most populous community.

With a 2010 count of 1,368 people, the population of Onarga decreased 4.87% from the 2000 Census (which had a count of 1,438 people).

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

Communities near Onarga ...

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

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

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

We also have a detailed list of newspapers that have been published in the area around Onarga. Our list includes 9 papers. See our Newspapers Page for Onarga.

TripAdvisor Tourism Pages for Onarga ...

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

Adding Onarga to Our Gazetteer ...

We originally found mention of Onarga 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 Onarga was on a map titled Rand McNally Map (1881).

For more details, see References and Mentions for Onarga.

Footnotes ...

<1>If you're interested in how the shape of Illinois' counties, including Iroquois, 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 Onarga. 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 Onarga.
<4>The elevation is an estimate for the area around Onarga - 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 815 code has been Overlayed with the 779 area code. New phone numbers in the Onarga area will be assigned with one of these codes: 815 or 779. As a result, placing a call in the Onarga 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 village (such as Onarga). When looking for a ZIP Code, whether Onarga 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.