|— City —|
|• Mayor||John L. Schultz (D)|
|• Total||5.79 sq mi (15.00 km2)|
|• Land||5.78 sq mi (14.97 km2)|
|• Water||0.01 sq mi (0.03 km2)|
|Elevation||801 ft (244 m)|
|• Estimate (2011)||9,402|
|• Density||1,627.2/sq mi (628.3/km2)|
|Time zone||EST (UTC-5)|
|• Summer (DST)||EDT (UTC-4)|
|GNIS feature ID||0446543|
Decatur is a city in Root and Washington townships, Adams County, Indiana, United States. The city, which serves as the county seat of Adams County, takes its name after the prominent war hero Stephen Decatur, Jr., one of the captains of the original six frigates of the US navy. When Indiana claimed official statehood in 1816, Decatur's name was as well known and revered as any star or celebrity today, thus when the town of Decatur was founded in 1836 it took its name in honor of the war hero. Decatur is home to Adams Memorial Hospital, which was designated as one of the "Top 100" Critical Access Hospitals in the United States. The population of Decatur was 9,405 at the 2010 census.
Decatur is located at (40.829581, -84.929185).
2010 census 
As of the census of 2010, there were 9,405 people, 4,011 households, and 2,511 families residing in the city. The population density was 1,627.2 inhabitants per square mile (628.3 /km2). There were 4,427 housing units at an average density of 765.9 per square mile (295.7 /km2). The racial makeup of the city was 94.7% White, 0.5% African American, 0.4% Native American, 0.4% Asian, 2.6% from other races, and 1.4% from two or more races. Hispanic or Latino of any race were 8.4% of the population.
There were 4,011 households out of which 31.3% had children under the age of 18 living with them, 43.7% were married couples living together, 13.6% had a female householder with no husband present, 5.4% had a male householder with no wife present, and 37.4% were non-families. 33.1% of all households were made up of individuals and 13% had someone living alone who was 65 years of age or older. The average household size was 2.32 and the average family size was 2.92.
The median age in the city was 37.2 years. 24.7% of residents were under the age of 18; 9.4% were between the ages of 18 and 24; 25.6% were from 25 to 44; 25.7% were from 45 to 64; and 14.6% were 65 years of age or older. The gender makeup of the city was 48.4% male and 51.6% female.
2000 census 
As of the census of 2000, there were 9,528 people, 3,960 households, and 2,570 families residing in the city. The population density was 1,935.4 people per square mile (747.7/km²). There were 4,190 housing units at an average density of 851.1 per square mile (328.8/km²). The racial makeup of the city was 94.64% White, 0.24% African American, 0.35% Native American, 0.36% Asian, 0.06% Pacific Islander, 3.58% from other races, and 0.78% from two or more races. Hispanic or Latino of any race were 7.69% of the population.
There were 3,960 households out of which 32.4% had children under the age of 18 living with them, 48.5% were married couples living together, 12.2% had a female householder with no husband present, and 35.1% were non-families. 31.4% of all households were made up of individuals and 13.7% had someone living alone who was 65 years of age or older. The average household size was 2.39 and the average family size was 3.00.
In the city the population was spread out with 26.4% under the age of 18, 9.8% from 18 to 24, 28.7% from 25 to 44, 20.5% from 45 to 64, and 14.6% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 94.9 males. For every 100 females age 18 and over, there were 90.5 males.
The median income for a household in the city was $37,234, and the median income for a family was $44,722. Males had a median income of $31,819 versus $24,310 for females. The per capita income for the city was $18,186. About 5.6% of families and 7.7% of the population were below the poverty line, including 9.7% of those under age 18 and 11.3% of those age 65 or over.
The government consists of a mayor and a city council. The mayor is elected in citywide vote. The city council consists of five members. Four are elected from individual districts. One is elected at-large. There is also a clerk-treasurer who is elected in citywide vote.
The local high school in Decatur is Bellmont High School; approximately 900 students attend BHS.
- Some of the larger employers in Decatur include All American Homes, Bunge Limited, Fleetwood RV, and Thunderbird Products.
- Five unique restaurants well known in the surrounding area draw a large number of diners: Arnold's Drive-In, Back 40 Junction, The Galley, Two Brothers Bar and Restaurant, and the West End Restaurant.
- Lingenfelter Performance Engineering, well known for performance tuning and producing after-market parts for GM sports cars (especially the Chevrolet Corvette) is located in Decatur.
Notable residents 
- David Anspaugh, American television and film director
- Bob Hite, Sr., radio and television announcer for CBS
See also 
- Indiana Register of Historic Sites and Structures
- National Register of Historic Places listings in Adams County, Indiana
- "US Gazetteer files 2010". United States Census Bureau. Retrieved 2012-12-11.
- "American FactFinder". United States Census Bureau. Retrieved 2012-12-11.
- "Population Estimates". United States Census Bureau. Retrieved 2013-01-02.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- "US Board on Geographic Names". United States Geological Survey. 2007-10-25. Retrieved 2008-01-31.
- "Find a County". National Association of Counties. Retrieved 2011-06-07.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
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