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Home >> State of Indiana >> Posey County  

Welcome to Posey County ...

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

The community of Mount Vernon is the Seat for Posey County.

Posey County was founded November 11, 1814 and was created by taking area from Warrick County.

From the Census Estimates for 2019, <1> Posey had a population of 25,427 people. This is a decrease of 1.68% since the last Census (which gave a population of 25,861 people in 2010).

At the time of the 2010 Census, Posey represented 0.4% of the total population of Indiana.

Below are some of the communities located in Posey County:

  • Cynthiana
    (13 miles [20.9 km] to the northeast)
  • Griffin
    (12 miles [19.3 km] to the north)
    • Jump to our Gazetteer entry for Griffin
    • Griffin is located in Posey County (IN)
    • Population from the 2020 Census: 167 people
  • Mount Vernon
    (6 miles [9.7 km] to the south)
  • New Harmony
    (8 miles [12.9 km] to the northwest)
    • Note: The GPS coordinates that we are using for New Harmony have been provided by the GNIS.<3> The coordinates still need to be verified.
    • Jump to our Gazetteer entry for New Harmony
    • New Harmony is located in Posey County (IN)
    • Population from the 2020 Census: 747 people
    • Jump to TripAdvisor's Tourism page for New Harmony <2>
  • Poseyville
    (10 miles [16.1 km] to the north)

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.
<3>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.
 

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This page was last modified/updated: 13 Jul 2025