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 Jefferson County and the rest of Missouri.
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Sources: United States Census Bureau. 2020 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 17 March 2022.
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 2020. 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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Population
With 224,777 people, Jefferson County is the 7th most populated county in the state of Missouri out of 115 counties. But watch out, Jefferson County, because Boone County with 179,704 people and Jasper County with 120,528 people are right behind you.
Race & Ethnicity
The largest Jefferson County racial/ethnic groups are White (92.7%) followed by Two or More (3.4%) and Hispanic (2.0%).
Median Income
In 2020, the median household income of Jefferson County households was $67,606. Jefferson County households made slightly more than Ray County households ($65,303) and Warren County households ($64,735) . However, 6.6% of Jefferson County families live in poverty.
Median Age
The median age for Jefferson County residents is 39.6 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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