Is Jefferson County the best Missouri county for your business?

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Jefferson County Population

The population data for Jefferson County are from the Census' American Community Survey 2017 5-year estimates and the Census' 2017 Population Estimates. The demographic data for Boone County, Clinton County, Jasper County, and Lincoln 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.

Jefferson County Demographics Summary

Population

With 222,639 people, Jefferson County is the 6th most populated county in the state of Missouri out of 114 counties. But watch out, Jefferson County, because Boone County with 174,589 people and Jasper County with 118,522 people are right behind you.

Race & Ethnicity

The largest Jefferson County racial/ethnic groups are White (94.7%) followed by Hispanic (1.8%) and Two or More (1.4%).

Median Income

In 2017, the median household income of Jefferson County residents was $60,765. Jefferson County households made slightly more than Clinton County households ($57,591) and Lincoln County households ($58,603) . However, 10.9% of Jefferson County residents live in poverty.

Median Age

The median age for Jefferson County residents is 38.8 years young.

FACT

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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