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Welcome to Carroll County ...

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

The community of Mount Carroll is the Seat for Carroll County.

Carroll County was founded in 1839 and was created by taking area from Jo Daviess County.

From the Census Estimates for 2019, <1> Carroll had a population of 14,305 people. This is a decrease of 7.07% since the last Census (which gave a population of 15,394 people in 2010).

At the time of the 2010 Census, Carroll represented 0.12% of the total population of Illinois.

Below are some of the communities located in Carroll County:

  • Chadwick
    (5 miles [8 km] to the southeast)
  • Lanark
    (6 miles [9.7 km] to the east)
    • Jump to our Gazetteer entry for Lanark
    • Lanark is located in Carroll County (IL)
    • Population from the 2020 Census: 1,321 people
    • Jump to TripAdvisor's Tourism page for Lanark <2>
  • Milledgeville
    (12 miles [19.3 km] to the southeast)
  • Mount Carroll
    (Less than 2 miles to the northwest)
  • Savanna
    (10 miles [16.1 km] to the west)
    • Jump to our Gazetteer entry for Savanna
    • Savanna is located in Carroll County (IL)
    • Population from the 2020 Census: 2,777 people
    • Jump to TripAdvisor's Tourism page for Savanna <2>
  • Shannon
    (12 miles [19.3 km] to the northeast)
    • Jump to our Gazetteer entry for Shannon
    • Shannon is located in Carroll County (IL)
    • Population from the 2020 Census: 684 people
    • Jump to TripAdvisor's Tourism page for Shannon <2>
  • Thomson
    (11 miles [17.7 km] to the southwest)
    • Jump to our Gazetteer entry for Thomson
    • Thomson is located in Carroll County (IL)
    • Population from the 2020 Census: 548 people
    • Jump to TripAdvisor's Tourism page for Thomson <2>

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>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: 13 Jul 2025