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Welcome to Jefferson County ...

Time Zone: Jefferson County lies in the Eastern Time Zone (EST/EDT) and observes daylight saving time.

The community of Madison is the Seat for Jefferson County.

Jefferson County was founded November 23, 1810. Jefferson was created by taking area from Clark, Dearborn and Knox Counties.

From the Census Estimates for 2019, <1> Jefferson had a population of 32,308 people. This is a decrease of 0.27% since the last Census (which gave a population of 32,395 people in 2010).

At the time of the 2010 Census, Jefferson represented 0.5% of the total population of Indiana.

Below are some of the communities located in Jefferson County:

  • Brooksburg
    (10 miles [16.1 km] to the east)
    • Brooksburg is located in Jefferson County (IN)
    • Jump to our Gazetteer entry for Brooksburg
    • Population from the 2020 Census: 80 people
  • Dupont
    (9 miles [14.5 km] to the northwest)
    • Dupont is located in Jefferson County (IN)
    • Jump to our Gazetteer entry for Dupont
    • Population from the 2020 Census: 327 people
    • Jump to TripAdvisor's Tourism page for Dupont <2>
  • Hanover
    (4 miles [6.4 km] to the southwest)
    • Hanover is located in Jefferson County (IN)
    • Jump to our Gazetteer entry for Hanover
    • Population from the 2020 Census: 3,493 people
    • Jump to TripAdvisor's Tourism page for Hanover <2>
  • Madison
    (2 miles [3.2 km] to the east)
    • Madison is located in Jefferson County (IN)
    • Jump to our Gazetteer entry for Madison
    • Population from the 2020 Census: 11,750 people
    • Jump to TripAdvisor's Tourism page for Madison <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.