|Decatur County, Indiana|
Decatur County Courthouse in Greensburg, Indiana
Location within the U.S. state of Indiana
Indiana's location within the U.S.
|Named for||Stephen Decatur, Jr.|
|• Total||373.32 sq mi (967 km2)|
|• Land||372.57 sq mi (965 km2)|
|• Water||0.76 sq mi (2 km2), 0.20%|
|• ( 2010)||25,740|
|• Density||69/sq mi (26.67/km2)|
|Footnotes: Indiana county number 16|
Decatur County was formed in 1822. It was named for Commodore Stephen Decatur, Jr., naval officer in the First and Second Barbary Wars, and in the War of 1812.  Decatur was mortally wounded in a duel in 1820.  Greensburg, the county seat, was selected as the location of the Honda assembly plant.
According to the 2010 census, the county has a total area of 373.32 square miles (966.9 km2), of which 372.57 square miles (965.0 km2) (or 99.80%) is land and 0.76 square miles (2.0 km2) (or 0.20%) is water. 
- Rush County (north)
- Franklin County (east)
- Ripley County (southeast)
- Jennings County (south)
- Bartholomew County (west)
- Shelby County (northwest)
|Climate chart ( explanation)|
In recent years, average temperatures in Greensburg have ranged from a low of 19 °F (−7 °C) in January to a high of 85 °F (29 °C) in July, although a record low of −24 °F (−31 °C) was recorded in January 1985 and a record high of 105 °F (41 °C) was recorded in July 1954. Average monthly precipitation ranged from 2.42 inches (61 mm) in February to 5.03 inches (128 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 small claims court that can handle some civil cases. The judge on the court is elected to a term of four years and must be a member of the Indiana Bar Association. The judge is assisted by a constable who is also elected to a four-year term. In some cases, court decisions can be appealed to the state level circuit court. 
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 oversee different parts of the county government. Members elected to county government positions are required to declare a party affiliation 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 25,740 people, 9,977 households, and 6,995 families residing in the county.  The population density was 69.1 inhabitants per square mile (26.7/km2). There were 11,209 housing units at an average density of 30.1 per square mile (11.6/km2).  The racial makeup of the county was 97.3% white, 0.7% Asian, 0.3% black or African American, 0.2% American Indian, 0.6% from other races, and 0.9% from two or more races. Those of Hispanic or Latino origin made up 1.7% of the population.  In terms of ancestry, In terms of ancestry, 35.5% were of English ancestry, 35.1% were of German, and 9.0% were of Irish ancestry according to 2010 American Community Survey.
Of the 9,977 households, 33.8% had children under the age of 18 living with them, 54.6% were married couples living together, 10.6% had a female householder with no husband present, 29.9% were non-families, and 25.0% of all households were made up of individuals. The average household size was 2.54 and the average family size was 3.02. The median age was 38.7 years. 
The median income for a household in the county was $47,697 and the median income for a family was $52,308. Males had a median income of $41,143 versus $30,226 for females. The per capita income for the county was $22,719. About 8.3% of families and 10.8% of the population were below the poverty line, including 17.3% of those under age 18 and 6.8% of those age 65 or over. 
- "Decatur County QuickFacts". United States Census Bureau. Archived from the original on 2011-07-09. Retrieved 2011-09-17.
- "Find a County". National Association of Counties. Archived from the original on 2011-05-31. Retrieved 2011-06-07.
- Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Govt. Print. Off. p. 102.
- De Witt Clinton Goodrich & Charles Richard Tuttle (1875). An Illustrated History of the State of Indiana. Indiana: R. S. Peale & co. p. 555.
- "Population, Housing Units, Area, and Density: 2010 - County". United States Census Bureau. Retrieved 2015-07-10.
- "Monthly Averages for Greensburg, 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.
- "Indiana Senate Districts". State of Indiana. Retrieved 2011-01-23.
- "Indiana House Districts". State of Indiana. Retrieved 2011-01-23.
- Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Retrieved 2018-05-14.
- "Population and Housing Unit Estimates". Retrieved June 9, 2017.
- "U.S. Decennial Census". United States Census Bureau. Archived from the original on May 12, 2015. 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.
- "DP03 SELECTED ECONOMIC CHARACTERISTICS – 2006-2010 American Community Survey 5-Year Estimates". United States Census Bureau. Retrieved 2015-07-10.