|Boone County, Indiana|
Boone County Courthouse in Lebanon, Indiana
Location within the U.S. state of Indiana
Indiana's location within the U.S.
|Founded||1 April 1830|
|Named for||Daniel Boone|
|• Total||423.25 sq mi (1,096 km2)|
|• Land||422.91 sq mi (1,095 km2)|
|• Water||0.34 sq mi (1 km2), 0.08%|
|• ( 2010)||56,640|
|• Density||134/sq mi (51.72/km2)|
|Congressional districts||4th, 5th|
|Footnotes: Indiana county number 6|
Boone County is a county located in the U.S. state of Indiana. As of 2010, the population was 56,640.  The county seat is Lebanon.  Indiana's center of population is located in eastern Boone County, just northwest of the town of Sheridan in neighboring Hamilton County. 
Boone County was formed April 1, 1830, and named for frontiersman Daniel Boone.  The county commissioners met near the center of the county on May 1, 1831 to identify a county seat, which by law had to be within 2 miles (3.2 km) of the county's center; the city of Lebanon was selected to serve this purpose, replacing Jamestown (Founded 1830) which had served as interim county seat. 
According to the 2010 census, the county has a total area of 423.25 square miles (1,096.2 km2), of which 422.91 square miles (1,095.3 km2) (or 99.92%) is land and 0.34 square miles (0.88 km2) (or 0.08%) is water. 
- Clinton County (north)
- Hamilton County (east)
- Marion County (southeast)
- Hendricks County (south)
- Montgomery County (west) 
- Interstate 65
- Interstate 74
- Interstate 465
- Interstate 865
- U.S. Route 52
- U.S. Route 136
- U.S. Route 421
- Indiana State Road 32
- Indiana State Road 38
- Indiana State Road 39
- Indiana State Road 47
- Indiana State Road 75
- Indiana State Road 234
- Indiana State Road 267
|Climate chart ( explanation)|
In recent years, average temperatures in Lebanon have ranged from a low of 18 °F (−8 °C) in January to a high of 86 °F (30 °C) in July, although a record low of −27 °F (−33 °C) was recorded in January 1994 and a record high of 112 °F (44 °C) was recorded in July 1936. Average monthly precipitation ranged from 2.35 inches (60 mm) in February to 4.54 inches (115 mm) in July. 
County Council: The county council is the legislative branch of the county's 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 up 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 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 56,640 people, 21,149 households, and 15,509 families residing in the county.  The population density was 133.9 inhabitants per square mile (51.7/km2). There were 22,754 housing units at an average density of 53.8 per square mile (20.8/km2).  The racial makeup of the county was 95.3% white, 1.7% Asian, 0.9% black or African American, 0.2% American Indian, 0.7% from other races, and 1.4% from two or more races. Those of Hispanic or Latino origin made up 2.2% of the population.  In terms of ancestry, 28.9% were German, 19.3% were English, 14.1% were Irish, and 9.0% were American. 
Of the 21,149 households, 38.8% had children under the age of 18 living with them, 61.1% were married couples living together, 8.4% had a female householder with no husband present, 26.7% were non-families, and 22.4% of all households were made up of individuals. The average household size was 2.65 and the average family size was 3.12. The median age was 38.6 years. 
The median income for a household in the county was $47,697 and the median income for a family was $81,401. Males had a median income of $57,251 versus $41,309 for females. The per capita income for the county was $38,696. About 6.1% of families and 7.1% of the population were below the poverty line, including 8.6% of those under age 18 and 5.6% of those age 65 or over. 
- List of public art in Boone County, Indiana
- National Register of Historic Places listings in Boone County, Indiana
- "Boone County QuickFacts". United States Census Bureau. Retrieved 2011-09-17.
- "Find a County". National Association of Counties. Archived from the original on 2011-05-31. Retrieved 2011-06-07.
- "Population and Population Centers by State: 2000". United States Census. Archived from the original on 2013-06-22. Retrieved 2007-06-30.
- Harden and Spahr 1887, p. 10.
- Harden and Spahr 1887, p. 37.
- "Population, Housing Units, Area, and Density: 2010 - County". United States Census Bureau. Retrieved 2015-07-10.
- "History of Boone County". Boone County. Retrieved 24 March 2018.
- "Monthly Averages for Lebanon, 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.
- "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.
- Harden, Samuel; Spahr, John (1887). Early Life and Times in Boone County, Indiana. Indianapolis: Carlon and Hollenbeck. Retrieved 2011-05-31.
- Leander Mead, Crist. History of Boone County, Indiana. Indianapolis: A. W. Bowen and Company. Retrieved 2011-05-31.
- Boone County Community Network
- Lebanon Community School Corporation
- Western Boone County Community School Dist
- Zionsville Community Schools
- Boone County Government