Marshall County, IL — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
11,715
Male
5,895
50.3%
Female
5,820
49.7%
Median Age
45.9 yrs
Avg Household Size
2.3
Foreign Born
1.4%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher13.6%
High School or Higher40.7%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
7.3%
Disability
0.0%
Non-English Home
6.5%
Married
45.7%
Marshall County, IL has a population of 11,715 according to 2023 Census Bureau estimates. The median age is 45.9 years. The largest racial or ethnic group is White at 93.7% of the population. 13.6% of residents hold a bachelor's degree or higher. 1.4% of residents are foreign-born.