Mount Vernon is a city in southern Indiana

Indiana

Indiana is a US state, admitted to the United States as the 19th on December 11, 1816. It is located in the Midwestern United States and Great Lakes Region. With 6,483,802 residents, the state is ranked 15th in population and 16th in population density. Indiana is ranked 38th in land area and is...

 along the Ohio River

Ohio River

The Ohio River is the largest tributary, by volume, of the Mississippi River. At the confluence, the Ohio is even bigger than the Mississippi and, thus, is hydrologically the main stream of the whole river system, including the Allegheny River further upstream...

 and the county seat

County seat

A county seat is an administrative center, or seat of government, for a county or civil parish. The term is primarily used in the United States....

 of Posey County

Posey County, Indiana

As of the census of 2000, there were 27,061 people, 10,205 households, and 7,612 families residing in the county. The population density was 66 people per square mile . There were 11,076 housing units at an average density of 27 per square mile...

. It is located in Black Township

Black Township, Posey County, Indiana

Black Township is one of ten townships in Posey County, Indiana. As of the 2000 census, its population was 10,288.-Adjacent Townships:* Indiana** Posey County*** Lynn Township Black Township is one of ten townships in Posey County, Indiana. As of the 2000 census, its population was 10,288.-Adjacent...

. As of the 2010 census, the city's population was 6,687. It is part of the Evansville, Indiana

Evansville, Indiana

Evansville is the third-largest city in the U.S. state of Indiana and the largest city in Southern Indiana. As of the 2010 census, the city had a total population of 117,429. It is the county seat of Vanderburgh County and the regional hub for both Southwestern Indiana and the...

, metropolitan area, which had a 2000 population of 342,815.
Mount Vernon is located at 37°56′12"N 87°53′56"W (37.936766, -87.898780).

According to the United States Census Bureau

United States Census Bureau

The United States Census Bureau is the government agency that is responsible for the United States Census. It also gathers other national demographic and economic data...

, the city has a total area of 2.5 square miles (6.6 km²), of which, 2.5 square miles (6.4 km²) of it is land and 0.1 square miles (0.2 km²) of it (2.77%) is water.
Mt.