Rock County, WI — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
163,944
Male
81,406
49.7%
Female
82,538
50.3%
Median Age
40.1 yrs
Avg Household Size
2.4
Foreign Born
4.8%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher17.7%
High School or Higher40.7%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
5.5%
Disability
0.0%
Non-English Home
5.1%
Married
41.3%
Rock County, WI has a population of 163,944 according to 2023 Census Bureau estimates. The median age is 40.1 years. The largest racial or ethnic group is White at 82.3% of the population. 17.7% of residents hold a bachelor's degree or higher. 4.8% of residents are foreign-born.