Now you can skip hours of internet research and jump straight to getting answers with our meaningful at-a-glance Demographics by County Report. With the most current & most popular demographic data, it's the perfect starting point for your research about Marion County and the rest of Illinois.
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Sources: United States Census Bureau. 2021 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 8 December 2022.
United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2020 to July 1, 2021. U.S. Census Bureau, Population Division. Web. May 2022. http://www.census.gov/.
United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2010 to July 1, 2019. U.S. Census Bureau, Population Division. Web. May 2021. http://www.census.gov/.
United States Census Bureau. "P2 Hispanic or Latino, and Not Hispanic or Latino by Race." 2020 Census State Redistricting Data (Public Law 94-171) Summary File. U.S. Census Bureau, 2020 Census. Web. 12 August 2021. https://www.census.gov/.
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With 37,781 people, Marion County is the 36th most populated county in the state of Illinois out of 102 counties. But watch out, Marion County, because Jefferson County with 37,362 people and Clinton County with 37,048 people are right behind you.
The largest Marion County racial/ethnic groups are White (90.7%) followed by Black (3.8%) and Two or More (2.5%).
In 2021, the median household income of Marion County households was $53,209. Marion County households made slightly more than Christian County households ($53,188) and Perry County households ($53,108) . However, 12.3% of Marion County families live in poverty.
The median age for Marion County residents is 42.1 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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