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All Marion County population data above are from the US Census Bureau.
The population data for Marion County are from the Census' American Community Survey 2017 5-year estimates and the Census' 2017 Population Estimates. The demographic data for Allen County, Knox County, Lake County, and Vanderburgh County are the most current, comparable demographics available from the US Census Bureau, are from the American Community Survey 2017 5-year estimates, and were downloaded on 6 December 2018. Check out our FAQ section for more details.
With 939,964 people, Marion County is the 1st most populated county in the state of Indiana out of 92 counties. But watch out, Marion County, because Allen County with 367,747 people and Lake County with 488,694 people are right behind you.
The largest Marion County racial/ethnic groups are White (56.7%) followed by Black (27.2%) and Hispanic (10.1%).
In 2017, the median household income of Marion County residents was $44,869. Marion County households made slightly more than Knox County households ($44,837) and Vanderburgh County households ($44,815) . However, 19.8% of Marion County residents live in poverty.
The median age for Marion County residents is 34.3 years young.
86% of people CANNOT find the data they're looking for on the US Census Bureau website. Source: Nielsen Norman Group
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