Greenwood is a city in Johnson County, Indiana, United States. The population was 49,791 at the 2010 Census, and increased to 54,491 in the Census 2014 estimates. It is home to the Greenwood Park Mall. Greenwood is located between Indiana State Road 37 and Interstate 65. The city shares a border with Indianapolis and is the most populous suburb in the southern portion of the Indianapolis Metropolitan Area.