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Welcome to Warren County ...

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

The community of Monmouth is the Seat for Warren County.

Warren County was founded in 1825 and was created by taking area from Schuyler County.

From the Census Estimates for 2019, <1> Warren had a population of 16,816 people. This is a decrease of 5.03% since the last Census (which gave a population of 17,707 people in 2010).

At the time of the 2010 Census, Warren represented 0.14% of the total population of Illinois.

Below are some of the communities located in Warren County:

  • Kirkwood
    (6 miles [9.7 km] to the west)
    • Note: The GPS coordinates that we are using for Kirkwood have been provided by the GNIS.<2> The coordinates still need to be verified.
    • Jump to our Gazetteer entry for Kirkwood
    • Kirkwood is located in Warren County (IL)
    • Population from the 2020 Census: 670 people
    • Jump to TripAdvisor's Tourism page for Kirkwood <3>
  • Little York
    (11 miles [17.7 km] to the northwest)
    • Note: The GPS coordinates that we are using for Little York have been provided by the GNIS.<2> The coordinates still need to be verified.
    • Jump to our Gazetteer entry for Little York
    • Little York is located in Warren County (IL)
    • Population from the 2020 Census: 304 people
    • Jump to TripAdvisor's Tourism page for Little York <3>
  • Monmouth
    (2 miles [3.2 km] to the north)
    • Note: The GPS coordinates that we are using for Monmouth have been provided by the GNIS.<2> The coordinates still need to be verified.
    • Jump to our Gazetteer entry for Monmouth
    • Monmouth is located in Warren County (IL)
    • Population from the 2020 Census: 8,801 people
    • Jump to TripAdvisor's Tourism page for Monmouth <3>
  • Roseville
    (10 miles [16.1 km] to the south)

Websites of Interest ...

Footnotes ...

<1>On a yearly basis, the US Census Bureau creates an estimate of the county's population. Keep in mind that this is an estimate and not an actual count. The last physical count was the 2010 Census and the next count will be for the 2020 Census.
<2>The location has been supplied by the Geographic Names Information System - which is maintained by the U.S. Geological Survey (USGS). While these values should be definitive, we found that accuracy can vary and you should double-check the location if accuracy is required.
<3>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.
 

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This page was last modified/updated: 26 Feb 2024