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Welcome to Alexander County ...

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

The community of Cairo is the Seat for Alexander County.

Alexander County was founded in 1819 and was created by taking area from Union County.

From the Census Estimates for 2019, <1> Alexander had a population of 5,761 people. This is a decrease of 29.8% since the last Census (which gave a population of 8,206 people in 2010).

At the time of the 2010 Census, Alexander represented 0.06% of the total population of Illinois.

Below are some of the communities located in Alexander County:

  • Cairo
    (11 miles [17.7 km] to the southeast)
    • Cairo is located in Alexander County (IL)
    • Jump to our Gazetteer entry for Cairo
    • Population from the 2020 Census: 1,989 people
    • Jump to TripAdvisor's Tourism page for Cairo <2>
  • East Cape Girardeau
    (14 miles [22.5 km] to the northwest)
    • East Cape Girardeau is located in Alexander County (IL)
    • Jump to our Gazetteer entry for East Cape Girardeau
    • Population from the 2020 Census: 268 people
  • McClure
    (14 miles [22.5 km] to the northwest)
    • McClure is located in Alexander County (IL)
    • Jump to our Gazetteer entry for McClure
    • Population from the 2020 Census: 285 people
    • Jump to TripAdvisor's Tourism page for McClure <2>
  • Tamms
    (6 miles [9.7 km] to the north)
    • Tamms is located in Alexander County (IL)
    • Jump to our Gazetteer entry for Tamms
    • Population from the 2020 Census: 449 people
    • Jump to TripAdvisor's Tourism page for Tamms <2>
  • Thebes
    (10 miles [16.1 km] to the northwest)
    • Thebes is located in Alexander County (IL)
    • Jump to our Gazetteer entry for Thebes
    • Population from the 2020 Census: 303 people

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.