Johnson County, Indiana

Johnson County, Indiana

Infobox U.S. County
county = Johnson County
state = Indiana

map size = 150
founded = 1823
seat = Franklin | area_total_sq_mi =322
area_land_sq_mi =320
area_water_sq_mi =1
area percentage = 0.42%
census yr = 2000
pop = 115209
density_km2 =139
web =

Johnson County is a county located in the U.S. state of Indiana. As of 2000, the population was 115,209 (128,436 at the 2005 annual update). The county seat is FranklinGR|6.


According to the U.S. Census Bureau, the county has a total area of 322 square miles (833 km²), of which 320 square miles (829 km²) is land and 1 square mile (4 km²) (0.42%) is water.

Adjacent counties

*Marion County (north)
*Shelby County (east)
*Bartholomew County (southeast)
*Brown County (southwest)
*Morgan County (west)


Johnson County was formed in 1823. It was named for John Johnson, a judge of the Indiana Supreme Court. This is probably John Johnson of Knox County, delegate to the State constitutional convention, appointed to the Supreme Court in 1816.


The county government is a constitutional body, and is granted specific powers by the Constitution of Indiana, and by the Indiana Code.

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.cite web|author=Indiana Code|url= |title=Title 36, Article 2, Section 3|accessdate=2008-09-16|] cite web|author= Indiana Code |url= |title= Title 2, Article 10, Section 2 |accessdate=2008-09-16|]

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, the collection of 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 terms of four years. 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 serve terms of four years and oversee different parts of the county government. Members elected to any county government position are required to declare a party affiliation and be a resident of the county.


As of the censusGR|2 of 2000, there were 115,209 people, 42,434 households, and 31,613 families residing in the county. The population density was 360 people per square mile (139/km²). There were 45,095 housing units at an average density of 141 per square mile (54/km²). The racial makeup of the county was 97.04% White, 0.79% Black or African American, 0.18% Native American, 0.84% Asian, 0.03% Pacific Islander, 0.48% from other races, and 0.65% from two or more races. 1.38% of the population were Hispanic or Latino of any race. 26.5% were of German, 19.6% American, 12.4% English and 10.9% Irish ancestry according to Census 2000.

There were 42,434 households out of which 37.40% had children under the age of 18 living with them, 62.00% were married couples living together, 9.00% had a female householder with no husband present, and 25.50% were non-families. 21.20% of all households were made up of individuals and 7.30% had someone living alone who was 65 years of age or older. The average household size was 2.63 and the average family size was 3.06.

In the county the population was spread out with 27.20% under the age of 18, 8.70% from 18 to 24, 30.80% from 25 to 44, 22.30% from 45 to 64, and 11.00% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 96.00 males. For every 100 females age 18 and over, there were 92.80 males.

The median income for a household in the county was $52,693, and the median income for a family was $60,571. Males had a median income of $42,272 versus $28,181 for females. The per capita income for the county was $22,976. About 3.30% of families and 5.60% of the population were below the poverty line, including 5.70% of those under age 18 and 7.70% of those age 65 or over.

Cities and towns

*New Whiteland
*Princes Lakes




*Blue River
*White River

The south end of the county is also home to the Camp Atterbury military installation.

External references

* [ Delegates to the 1816 Constitutional Convention]


*cite book
first = Richard L. (editor)
last = Forstall
year = 1996
title = Population of states and counties of the United States: 1790 to 1990 : from the twenty-one decennial censuses
publisher = United States Department of Commerce, Bureau of the Census, Population Division
id = ISBN 0-934213-48-8

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