|Elevation||718 ft (219 m)|
|Area||1.78 sq mi (5 km2)|
|- land||1.78 sq mi (5 km2)|
|- water||0.00 sq mi (0 km2)|
|Density||2,456.2 / sq mi (948 / km2)|
|- summer (DST)||CDT (UTC-5)|
|Wikimedia Commons: Maroa, Illinois|
Maroa is a city in Macon County, Illinois, United States whose population was 1,654 at the 2000 census, and 1,565 at a 2009 estimate. It is included in the Decatur, Illinois Metropolitan Statistical Area.
Maroa is located at (40.036951, -88.954967).
According to the 2010 census, the city has a total area of 1.78 square miles (4.6 km2), all land.
As of the census of 2000, there were 1,654 people, 651 households, and 477 families residing in the city. The population density was 2,456.2 people per square mile (953.2/km²). There were 711 housing units at an average density of 1,055.8 per square mile (409.7/km²). The racial makeup of the city was 99.27% White, 0.18% African American, 0.06% Native American, 0.06% Asian, 0.18% from other races, and 0.24% from two or more races. Hispanic or Latino of any race were 0.91% of the population.
There were 651 households out of which 35.0% had children under the age of 18 living with them, 60.5% were married couples living together, 9.7% had a female householder with no husband present, and 26.6% were non-families. 23.7% of all households were made up of individuals and 11.8% had someone living alone who was 65 years of age or older. The average household size was 2.54 and the average family size was 3.00.
In the city the population was spread out with 27.4% under the age of 18, 7.6% from 18 to 24, 30.0% from 25 to 44, 22.1% from 45 to 64, and 12.9% who were 65 years of age or older. The median age was 37 years. For every 100 females there were 100.5 males. For every 100 females age 18 and over, there were 93.1 males.
The median income for a household in the city was $41,615, and the median income for a family was $46,908. Males had a median income of $38,274 versus $20,809 for females. The per capita income for the city was $18,308. About 3.0% of families and 4.4% of the population were below the poverty line, including 3.9% of those under age 18 and 4.7% of those age 65 or over.
Notable people 
- Kevin Koslofski, Major League Baseball player for the Kansas City Royals
- Franklin C. McLean, physician
- Dean O'Banion, a 1920s Irish-American mobster
- Jeff Query, football wide receiver with Green Bay Packers, played football at Millikin University
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- "2010 Census U.S. Gazetteer Files for Places – Illinois". United States Census. Retrieved 2012-10-13.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.