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A Gazetteer for the United States and Canada
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Welcome to New Dennison ...

New Dennison is located in Williamson County<1>.

While we don't have a date for the founding of New Dennison, you might consider that their post office opened in 1888.

New Dennison is 450 feet [137 m] above sea level.<2>.

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

Area Codes for New Dennison: 618 & 730<3>

Communities near New Dennison ...

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

  • Carbondale
    (19 miles [30.6 km] to the west)
  • Marion
    (4 miles [6.4 km] to the northwest)
    • Marion is located in Williamson County
    • Jump to our Gazetteer entry for Marion
    • Population from the 2020 Census: 17,417 people
    • Jump to TripAdvisor's Tourism page for Marion <4>
  • Herrin
    (12 miles [19.3 km] to the northwest)
    • Herrin is located in Williamson County
    • Jump to our Gazetteer entry for Herrin
    • Population from the 2020 Census: 12,625 people
    • Jump to TripAdvisor's Tourism page for Herrin <4>
  • Harrisburg
    (17 miles [27.4 km] to the east)
  • West Frankfort
    (14 miles [22.5 km] to the north)
    • West Frankfort is located in Franklin County
    • Jump to our Gazetteer entry for West Frankfort
    • Population from the 2020 Census: 7,733 people
  • Carterville
    (12 miles [19.3 km] to the west)
  • Johnston City
    (9 miles [14.5 km] to the northwest)
  • Zeigler
    (17 miles [27.4 km] to the northwest)
  • Cambria
    (15 miles [24.1 km] to the northwest)
  • Carrier Mills
    (12 miles [19.3 km] to the east)
    • Carrier Mills is located in Saline County
    • Jump to our Gazetteer entry for Carrier Mills
    • Population from the 2020 Census: 1,527 people
    • Former names for Carrier Mills:
    • Carriers Mills
    • Morrilsville
    • Jump to TripAdvisor's Tourism page for Carrier Mills <4>

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

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

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

TripAdvisor Tourism Pages for New Dennison ...

Looking for more information about New Dennison? 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.

While we are unaware of a Tourism page that is specific to New Dennison, there are neighboring communities that do have Tourism pages. A map of those communities can be found with our TripAdvisor Page for New Dennison.

Adding New Dennison to Our Gazetteer ...

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

From that list, the New Dennison post office opened in 1888. The New Dennison post office closed in 1919.

For more details, see References and Mentions for New Dennison.

Footnotes ...

<1>If you're interested in how the shape of Illinois' counties, including Williamson, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>The elevation is an estimate for the area around New Dennison - 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 618 code has been Overlayed with the 730 area code. New phone numbers in the New Dennison area will be assigned with one of these codes: 618 or 730. As a result, placing a call in the New Dennison area will require 10-digit dialing (where you enter both the area code and then the phone number).
<4>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.
<5>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/