Marathon County, WI — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
138,067
Male
69,687
50.5%
Female
68,380
49.5%
Median Age
41.2 yrs
Avg Household Size
2.4
Foreign Born
4.2%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher19.1%
High School or Higher42.1%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
5.5%
Disability
0.0%
Non-English Home
4.8%
Married
45.0%
Marathon County, WI has a population of 138,067 according to 2023 Census Bureau estimates. The median age is 41.2 years. The largest racial or ethnic group is White at 87.9% of the population. 19.1% of residents hold a bachelor's degree or higher. 4.2% of residents are foreign-born.