|Pike County, Indiana|
Pike County Courthouse in Petersburg
Location within the U.S. state of Indiana
Indiana's location within the U.S.
|Founded||December 21, 1816|
|Named for||Zebulon Pike|
|• Total||341.09 sq mi (883 km2)|
|• Land||334.24 sq mi (866 km2)|
|• Water||6.86 sq mi (18 km2), 2.01%|
|• ( 2018)||12,845|
|• Density||38/sq mi (15/km2)|
|Time zone||Eastern: UTC−5/ −4|
Pike County is a county located in the southwest portion of the U.S. state of Indiana. As of 2010, the population was 12,845.  The county seat is Petersburg.  It contains the geographic point representing median center of population of the United States. 
Formed on December 21, 1816, Pike County was the first county formed after Indiana became a state. It was formed from Gibson and Perry counties, and was named for Zebulon Pike, famous for his Pike Expedition of 1806 – 1807, exploring the southwest portion of the Louisiana Purchase. Pike commanded the 4th Infantry Regiment at the Battle of Tippecanoe in 1811. He was killed as a brigadier general during the War of 1812 after his men had captured York (now Toronto), Canada. 
According to the 2010 census, the county has a total area of 341.09 square miles (883.4 km2), of which 334.24 square miles (865.7 km2) (or 97.99%) is land and 6.86 square miles (17.8 km2) (or 2.01%) is water. 
- Ashby Yards
- Coats Spring
- Enos Corner
- Fritz Corner
- Highbank Town
- Oakland City Junction
- West Petersburg
- White Sulphur Springs
- Daviess County (northeast)
- Dubois County (east)
- Warrick County (south/CST Border)
- Gibson County (west/CST Border)
- Knox County (northwest)
- Patoka River National Wildlife Refuge and Management Area (Eastern Half)
|Climate chart ( explanation)|
In recent years, average temperatures in Petersburg have ranged from a low of 21 °F (−6 °C) in January to a high of 87 °F (31 °C) in July, although a record low of −18 °F (−28 °C) was recorded in December 1989 and a record high of 101 °F (38 °C) was recorded in September 2002. Average monthly precipitation ranged from 2.73 inches (69 mm) in February to 5.14 inches (131 mm) in May. 
County Council: The county council is the legislative branch of the county government and controls all the spending and revenue collection in the county. Representatives are elected from county districts. The council members serve four-year terms. They are responsible for setting salaries, the annual budget, and special spending. The council also has limited authority to impose local taxes, in the form of an income and property tax that is subject to state level approval, excise taxes, and service taxes.  
Board of Commissioners: The executive body of the county is made of a board of commissioners. The commissioners are elected county-wide, in staggered terms, and each serves a four-year term. One of the commissioners, typically the most senior, serves as president. The commissioners are charged with executing the acts legislated by the council, collecting revenue, and managing the day-to-day functions of the county government.  
Court: The county maintains a Circuit Court (83rd Judicial Circuit) and has a small claims division which division handles family law cases as well. The judge of the Circuit Court is elected to a term of six years and must be a member in good standing of the Indiana Bar. The judge is assisted by a referee in the small claims\family division who is appointed by the Circuit Court Judge.
County Officials: The county has several other elected offices, including sheriff, coroner, auditor, treasurer, recorder, surveyor, and circuit court clerk Each of these elected officers serves a term of four years and oversees a different part of county government. Members elected to county government positions are required to declare party affiliations and to be residents of the county. 
|U.S. Decennial Census
1790–1960  1900–1990 
1990–2000  2010–2013 
As of the 2010 United States Census, there were 12,845 people, 5,186 households, and 3,645 families residing in the county.  The population density was 38.4 inhabitants per square mile (14.8/km2). There were 5,735 housing units at an average density of 17.2 per square mile (6.6/km2).  The racial makeup of the county was 98.2% white, 0.3% black or African American, 0.2% Asian, 0.2% American Indian, 0.3% from other races, and 0.8% from two or more races. Those of Hispanic or Latino origin made up 0.9% of the population.  In terms of ancestry, 25.7% were American, 25.1% were German, 15.8% were Irish, and 11.4% were English. 
Of the 5,186 households, 29.6% had children under the age of 18 living with them, 57.3% were married couples living together, 8.5% had a female householder with no husband present, 29.7% were non-families, and 25.5% of all households were made up of individuals. The average household size was 2.44 and the average family size was 2.90. The median age was 42.8 years. 
The median income for a household in the county was $47,697 and the median income for a family was $49,423. Males had a median income of $40,952 versus $29,664 for females. The per capita income for the county was $20,005. About 9.0% of families and 12.9% of the population were below the poverty line, including 16.0% of those under age 18 and 10.0% of those age 65 or over. 
- "Pike County QuickFacts". United States Census Bureau. Archived from the original on 2011-07-16. Retrieved 2011-09-25.
- "Find a County". National Association of Counties. Retrieved 2011-06-07.
- De Witt Clinton Goodrich & Charles Richard Tuttle (1875). An Illustrated History of the State of Indiana. Indiana: R. S. Peale & co. p. 582.
- "Population, Housing Units, Area, and Density: 2010 – County". United States Census Bureau. Retrieved 2015-07-10.
- "Monthly Averages for Petersburg, Indiana". The Weather Channel. Retrieved 2011-01-27.
- Indiana Code. "Title 36, Article 2, Section 3". IN.gov. Retrieved 2008-09-16.
- Indiana Code. "Title 2, Article 10, Section 2" (PDF). IN.gov. Retrieved 2008-09-16.
- Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Retrieved 2018-05-19.
- "Population and Housing Unit Estimates". Retrieved June 9, 2017.
- "U.S. Decennial Census". United States Census Bureau. Retrieved July 10, 2014.
- "Historical Census Browser". University of Virginia Library. Retrieved July 10, 2014.
- "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved July 10, 2014.
- "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. Retrieved July 10, 2014.
- "DP-1 Profile of General Population and Housing Characteristics: 2010 Demographic Profile Data". United States Census Bureau. Retrieved 2015-07-10.
- "DP02 SELECTED SOCIAL CHARACTERISTICS IN THE UNITED STATES – 2006–2010 American Community Survey 5-Year Estimates". United States Census Bureau. Retrieved 2015-07-10.
- "DP03 SELECTED ECONOMIC CHARACTERISTICS – 2006–2010 American Community Survey 5-Year Estimates". United States Census Bureau. Retrieved 2015-07-10.