Marion County, Indiana


Marion County is a county in the U.S. state of Indiana. Census 2010 recorded a population of 903,393, making it the largest county in the state and 55th most populated county in the country, greater than the population of six states. The county seat is Indianapolis, the state capital and largest city. Marion County is consolidated with Indianapolis through an arrangement known as Unigov.
Marion County is the central county of the Indianapolis–Carmel–Anderson MSA.

Geography

According to the 2010 census, the county has an area of, of which is land and is water.
The White River flows through the county where it is joined by Eagle Creek and Fall Creek, both of which have dams in the county forming Eagle Creek Reservoir and Geist Reservoir, respectively.
Marion County has two Indiana State Parks, Fort Harrison State Park and White River State Park, as well as many municipal parks.

Adjacent counties

Major highways

;Interstate Highways
;US Highways
;Indiana Highways
* I-69 currently ends in Indianapolis at the I-465 interchange in the northeast section of the county. The extension connecting Indianapolis and Evansville is expected to be completed in the mid to late 2020s.

Airports

History

Marion County was created on April 1, 1822, from part of the so-called "New Purchase" lands that had been obtained by the Treaty of St. Mary's; the Lenape had previously occupied the area. It is named for Francis Marion, a Brigadier General from South Carolina in the American Revolutionary War.
The state capital was moved to Indianapolis in Marion County from Corydon on January 10, 1825. This began a period of rapid growth in population.

Climate and weather

In recent years, average temperatures in Indianapolis have ranged from a low of in January to a high of in July, although a record low of was recorded in January 1985 and a record high of was recorded in June 1988. Average monthly precipitation ranged from in January to in July.

Demographics

As of the 2010 United States Census, there were 903,393 people, 366,176 households, and 218,338 families residing in the county. The population density was. There were 417,862 housing units at an average density of. The racial makeup of the county was 62.7% white, 26.7% black or African American, 2.0% Asian, 0.3% American Indian, 0.1% Pacific islander, 5.4% from other races, and 2.8% from two or more races. Those of Hispanic or Latino origin made up 9.3% of the population. In terms of ancestry, 18.9% were German, 11.8% were Irish, 8.4% were English, 6.6% were American, and 5.2% were Subsaharan African.
Of the 366,176 households, 32.3% had children under the age of 18 living with them, 36.9% were married couples living together, 17.1% had a female householder with no husband present, 40.4% were non-families, and 32.0% of all households were made up of individuals. The average household size was 2.42 and the average family size was 3.08. The median age was 33.9 years.
The median income for a household in the county was $47,697 and the median income for a family was $54,142. Males had a median income of $42,215 versus $34,169 for females. The per capita income for the county was $24,498. About 13.5% of families and 17.3% of the population were below the poverty line, including 25.7% of those under age 18 and 9.0% of those age 65 or over.

Cities and towns

Marion County has a consolidated city-county government, known as Unigov, in which only four municipalities retain full government autonomy as "excluded cities". The remaining municipalities within the county are "included towns" and exercise very limited authority, mainly in zoning and appointing their own police departments and maintaining some of their own municipal services and town identities. They retain the ability to levy taxes for these purposes. Since many of these included towns were and remain fairly wealthy and influential within the county, they can still have considerable unofficial clout. Likewise, some neighborhoods that had already been formally incorporated into Indianapolis possess similar influence.

Municipalities

Excluded cities in bold.
Marion County has nine townships roughly organized into a grid-like, three-by-three pattern. This arrangement can be seen below, with the top being north.
Most of Marion County is in Indiana's 7th congressional district, which is held by Democrat André Carson. Indiana's 5th congressional district, which runs along the northern edge of the county, is held by Republican Susan Brooks. The county is represented by 15 seats in the Indiana House of Representatives, 86th through 100th districts, with ten seats held by Democrats and five by Republicans. In the State Senate Marion County is divided among nine districts, which are held by two Democrats and seven Republicans. The Senate districts are numbered 28 through 36.
The Indianapolis City-County Council is the combined legislative body of Indianapolis and Marion County. The consolidated government, known as Unigov, was formally established in 1970 upon the merger of the city government with the county government. The council passes ordinances for the city and county, and also makes appointments to certain boards and commissions.
;County elected officials
The Auditor, Assessor, and Treasurer together form the county's Board of Commissioners.
For most of the 20th century, Marion County was considered one of the most conservative urban counties in the nation. Between 1896 and 2000, it went Democratic only three times, in the national landslides of 1932, 1936 and 1964. The Republican edge began to lessen considerably in the 1990s, and in 2004 John Kerry became the first Democrat since Lyndon B. Johnson in 1964 to carry the county. The trend continued in 2008 and 2012 with Barack Obama showing strongly in Marion County, winning 63% and 60% of the vote respectively.