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A Gazetteer for the United States and Canada
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Welcome to Illinois City ...

Illinois City is located in Rock Island County<1>.

While we don't have a date for the founding of Illinois City, you might consider that their post office opened in 1846.

Illinois City is 760 feet [232 m] above sea level.<2>.

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

Area Codes for Illinois City: 309 & 861<3>

The ZIP code for Illinois City: 61259<4>

Communities near Illinois City ...

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

  • Davenport
    (19 miles [30.6 km] to the northeast)
  • Rock Island
    (18 miles [29 km] to the east)
  • Muscatine
    (7 miles [11.3 km] to the west)
    • Muscatine is located in Muscatine County (IA)
    • Jump to our Gazetteer entry for Muscatine
    • Population from the 2020 Census: 23,523 people
    • Jump to TripAdvisor's Tourism page for Muscatine <5>
  • Milan
    (17 miles [27.4 km] to the east)
    • Milan is located in Rock Island County
    • Jump to our Gazetteer entry for Milan
    • Population from the 2020 Census: 4,945 people
    • Jump to TripAdvisor's Tourism page for Milan <5>
  • Aledo
    (15 miles [24.1 km] to the southeast)
  • Wilton
    (14 miles [22.5 km] to the northwest)
    • Wilton is located in Muscatine County (IA)
    • Jump to our Gazetteer entry for Wilton
    • Population from the 2020 Census: 2,800 people
    • Jump to TripAdvisor's Tourism page for Wilton <5>
  • Durant
    (14 miles [22.5 km] to the north)
    • Durant is located in Scott County (IA)
    • Jump to our Gazetteer entry for Durant
    • Population from the 2020 Census: 1,857 people
    • Jump to TripAdvisor's Tourism page for Durant <5>
  • Blue Grass
    (10 miles [16.1 km] to the northeast)
  • Walcott
    (16 miles [25.7 km] to the north)
    • Walcott is located in Scott County (IA)
    • Jump to our Gazetteer entry for Walcott
    • Population from the 2020 Census: 1,627 people
    • Jump to TripAdvisor's Tourism page for Walcott <5>
  • Buffalo
    (8 miles [12.9 km] to the northeast)
    • Buffalo is located in Scott County (IA)
    • Jump to our Gazetteer entry for Buffalo
    • Population from the 2020 Census: 1,257 people
    • Jump to TripAdvisor's Tourism page for Buffalo <5>

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

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

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

TripAdvisor Tourism Pages for Illinois City ...

Looking for more information about Illinois City? 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 Illinois City, there are neighboring communities that do have Tourism pages. A map of those communities can be found with our TripAdvisor Page for Illinois City.

Adding Illinois City to Our Gazetteer ...

We originally found mention of Illinois City 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 Illinois City was in the book titled U.S. Post Offices (Oct. 1846).

For more details, see References and Mentions for Illinois City.

Footnotes ...

<1>If you're interested in how the shape of Illinois' counties, including Rock Island, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>The elevation is an estimate for the area around Illinois City - 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 309 code has been Overlayed with the 861 area code. New phone numbers in the Illinois City area will be assigned with one of these codes: 309 or 861. As a result, placing a call in the Illinois City 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 Illinois City). When looking for a ZIP Code, whether Illinois City 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.