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Welcome to Sinclair ...

Sinclair is located in Morgan County<1>.

While we don't have a date for the founding of Sinclair, you might consider that their post office opened in 1858.

Sinclair is 620 feet [189 m] above sea level.<2>.

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

Area Codes for Sinclair: 217 & 447<3>

Communities Also Named Sinclair ...

Using our Gazetteer, we found that there are 9 communities that are also named Sinclair - they are located in Idaho, Iowa, Maine, Manitoba, Montana, Pennsylvania, South Carolina, West Virginia and Wyoming.

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

Communities near Sinclair ...

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

  • Jacksonville
    (7 miles [11.3 km] to the southwest)
  • South Jacksonville
    (9 miles [14.5 km] to the southwest)
    • South Jacksonville is located in Morgan County
    • Jump to our Gazetteer entry for South Jacksonville
    • Population from the 2020 Census: 3,075 people
  • Virginia
    (11 miles [17.7 km] to the northwest)
  • New Berlin
    (12 miles [19.3 km] to the southeast)
  • Waverly
    (17 miles [27.4 km] to the southeast)
  • Ashland
    (8 miles [12.9 km] to the northeast)
  • Pleasant Plains
    (11 miles [17.7 km] to the northeast)
  • Loami
    (17 miles [27.4 km] to the southeast)
  • Franklin
    (13 miles [20.9 km] to the south)
  • Murrayville
    (16 miles [25.7 km] to the southwest)

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

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

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

TripAdvisor Tourism Pages for Sinclair ...

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

Adding Sinclair to Our Gazetteer ...

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

From that list, the Sinclair post office opened in 1858. The Sinclair post office closed in 1963.

For more details, see References and Mentions for Sinclair.

Footnotes ...

<1>If you're interested in how the shape of Illinois' counties, including Morgan, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>The elevation is an estimate for the area around Sinclair - 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 217 code has been Overlayed with the 447 area code. New phone numbers in the Sinclair area will be assigned with one of these codes: 217 or 447. As a result, placing a call in the Sinclair 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/