|Jefferson County, Indiana|
Jefferson County Courthouse in Madison, Indiana
Location within the U.S. state of Indiana
Indiana's location within the U.S.
|Named for||Thomas Jefferson|
|• Total||362.89 sq mi (940 km2)|
|• Land||360.63 sq mi (934 km2)|
|• Water||2.26 sq mi (6 km2), 0.62%|
|• ( 2017)||32,565|
|• Density||90/sq mi (34.65/km2)|
|Time zone||Eastern: UTC−5/ −4|
|Footnotes: Indiana county number 39|
Jefferson County was one of Indiana's first counties and many important early Hoosiers came from Madison, including William Hendricks. Throughout the early history of the state, Madison was one of the leading cities competing with Vincennes and later New Albany to be the largest city in the state. The county fell into economic decline after the American Civil War, as industry began to shift from southern Indiana to the northern part of the state.
On the evening of May 20, 2009 the county courthouse caught fire. The fire began in the steeple of the courthouse, which was under reconstruction for Madison's bicentenary. The roof of the dome had just been painted gold. Fire departments from across southern Indiana and northern Kentucky arrived to put out the fire which burned for several hours, destroyed much of the inside of the building and the county records. The fire forced the evacuation of the nearby county jail, and effectively shut down the downtown area of the city.  It was later determined the fire was accidentally started by workers who were welding on the metal roof dome.
According to the 2010 census, the county has a total area of 362.89 square miles (939.9 km2), of which 360.63 square miles (934.0 km2) (or 99.38%) is land and 2.26 square miles (5.9 km2) (or 0.62%) is water.  Jefferson County makes up part of the Louisville metropolitan area.
- Ripley County (north)
- Switzerland County (east)
- Carroll County, Kentucky (southeast)
- Trimble County, Kentucky (south)
- Clark County (southwest)
- Scott County (west)
- Jennings County (northwest)
|Climate chart ( explanation)|
In recent years, average temperatures in Madison have ranged from a low of 23 °F (−5 °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 108 °F (42 °C) was recorded in July 1954. Average monthly precipitation ranged from 2.92 inches (74 mm) in September to 4.96 inches (126 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 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. 
Jefferson County is part of Indiana's 6th congressional district and is represented in Congress by Republican Luke Messer.  It is also part of Indiana Senate district 45 and is split between Indiana House of Representatives districts 66, 67 and 69. 
|U.S. Decennial Census
1790-1960  1900-1990 
1990-2000  2010-2013 
As of the 2010 United States Census, there were 32,428 people, 12,635 households, and 8,456 families residing in the county.  The population density was 89.9 inhabitants per square mile (34.7/km2). There were 14,311 housing units at an average density of 39.7 per square mile (15.3/km2).  The racial makeup of the county was 95.2% white, 1.7% black or African American, 0.7% Asian, 0.2% American Indian, 0.9% from other races, and 1.3% from two or more races. Those of Hispanic or Latino origin made up 2.3% of the population.  In terms of ancestry, 23.5% were German, 15.4% were American, 12.9% were Irish, and 11.2% were English. 
Of the 12,635 households, 31.4% had children under the age of 18 living with them, 50.5% were married couples living together, 11.4% had a female householder with no husband present, 33.1% were non-families, and 27.2% of all households were made up of individuals. The average household size was 2.42 and the average family size was 2.90. The median age was 39.7 years. 
The median income for a household in the county was $47,697 and the median income for a family was $52,343. Males had a median income of $42,629 versus $30,475 for females. The per capita income for the county was $21,278. About 10.2% of families and 15.1% of the population were below the poverty line, including 22.1% of those under age 18 and 10.1% of those age 65 or over. 
All Jefferson County residents five years and older are eligible to obtain a free library card from the Jefferson County Public Library in Madison. The public school system in Jefferson County is Madison Consolidated Schools. 
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- "Find a County". National Association of Counties. Archived from the original on 2011-05-31. 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. 562.
- Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Govt. Print. Off. p. 168.
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- "Directory Browsing is Not Allowed".
- "Monthly Averages for Madison, Indiana". The Weather Channel. Retrieved 2011-01-27.
- Indiana Code. "Title 36, Article 2, Section 3". IN.gov. Retrieved 2008-09-16.
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- "Population and Housing Unit Estimates". Retrieved June 9, 2017.
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- "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.
- "Library Accounts". Jefferson County Public Library. Retrieved 8 March 2018.