Living in Jefferson County, Missouri

Jefferson County is a county in Missouri with a population of around 224,124, part of the St. Louis, MO-IL MSA metro area. The main communities are Arnold, Festus, De Soto.

Cost of Living

Median rent is $1,352/month, around the national average, with a median home price of around $254K. The county has one of the lowest unemployment rates in the country at 1.7%.

Weather and Climate

The climate brings cold winters (highs around 44°F) and hot summers (highs around 85°F). Natural hazard risks include earthquake risk and tornado risk.

Demographics

Jefferson County has relatively young demographics, with a median age of 39 and a predominantly working-class population (20% of adults hold a bachelor's degree or higher). The county votes strongly Republican.