Posey County, Indiana

Posey County
Posey County Courthouse in Mount Vernon
Posey County Courthouse in Mount Vernon
Map of Indiana highlighting Posey County
Location within the U.S. state of Indiana
Map of the United States highlighting Indiana
Indiana's location within the U.S.
Coordinates: 38°01′N 87°52′W / 38.02°N 87.86°W / 38.02; -87.86
Country United States
State Indiana
FoundedNovember 11, 1814
Named forThomas Posey
SeatMount Vernon
Largest cityMount Vernon
Area
 • Total
419.32 sq mi (1,086.0 km2)
 • Land409.57 sq mi (1,060.8 km2)
 • Water9.75 sq mi (25.3 km2)
Population
 (2020)
 • Total
25,222
 • Estimate 
(2023)
25,040 Decrease
 • Density60/sq mi (23/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional district8th
Websitewww.poseycountyin.gov
  • Indiana county number 65
  • Southernmost county in Indiana
  • Westernmost county in Indiana
  • Lowest point in Indiana located at county's southwestern tip

Posey County is the southernmost, southwesternmost, and westernmost county in the U.S. state of Indiana. Its southern border is formed by the Ohio River, and its western border by the Wabash River, a tributary to the Ohio. As of 2020, the population was 25,222.[1] The county seat is Mount Vernon.[2] Posey County is part of the Evansville, Indiana metropolitan statistical area. The Ports of Indiana-Mount Vernon, on the Ohio River, is the seventh-largest inland port complex in the nation. Mechanization of dock technology has altered the number of workers at the port, but Posey County is still the seventh-largest internal port in the United States, based on the tons of materials handled. Grain from the Midwest is among the products shipped.

  1. ^ "Quickfacts: Posey County, Indiana". United States Census Bureau. Retrieved June 6, 2023.
  2. ^ "Find a County". National Association of Counties. Retrieved June 7, 2011.