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Welcome to Johnson County ...

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

The community of Vienna is the Seat for Johnson County.

Johnson County was founded in 1812 and was created by taking area from Randolph County.

From the Census Estimates for 2019, <1> Johnson had a population of 12,417 people. This is a decrease of 1.48% since the last Census (which gave a population of 12,604 people in 2010).

At the time of the 2010 Census, Johnson represented 0.1% of the total population of Illinois.

Below are some of the communities located in Johnson County:

  • Belknap
    (10 miles [16.1 km] to the south)
    • Belknap is located in Johnson County (IL)
    • Jump to our Gazetteer entry for Belknap
    • Population from the 2020 Census: 107 people
    • Jump to TripAdvisor's Tourism page for Belknap <2>
  • Buncombe
    (4 miles [6.4 km] to the west)
  • Cypress
    (9 miles [14.5 km] to the southwest)
    • Cypress is located in Johnson County (IL)
    • Jump to our Gazetteer entry for Cypress
    • Population from the 2020 Census: 236 people
    • Jump to TripAdvisor's Tourism page for Cypress <2>
  • Goreville
    (7 miles [11.3 km] to the northwest)
  • New Burnside
    (10 miles [16.1 km] to the northeast)
  • Simpson
    (7 miles [11.3 km] to the east)
  • Vienna
    (3 miles [4.8 km] to the south)
    • Vienna is located in Johnson County (IL)
    • Jump to our Gazetteer entry for Vienna
    • Population from the 2020 Census: 1,427 people
    • Jump to TripAdvisor's Tourism page for Vienna <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.