Piatt County, IL — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
16,702
Male
8,292
49.6%
Female
8,410
50.4%
Median Age
42.5 yrs
Avg Household Size
2.4
Foreign Born
0.9%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher22.7%
High School or Higher46.4%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
4.8%
Disability
0.0%
Non-English Home
2.8%
Married
49.7%
Piatt County, IL has a population of 16,702 according to 2023 Census Bureau estimates. The median age is 42.5 years. The largest racial or ethnic group is White at 95.6% of the population. 22.7% of residents hold a bachelor's degree or higher. 0.9% of residents are foreign-born.