The 2014 Peoria County, Illinois, population is 186,399. There are 301 people per square mile (population density).
The median age is 36.7. The US median is 37.2. 48.16% of people in Peoria County, Illinois, are married. 11.53% are divorced.
The average household size is 2.38 people. 27.28% of people are married, with children. 20.31% have children, but are single.
75.27% of people are white, 17.73% are black, 3.20% are asian, 0.30% are native american, and 0.98% claim 'Other'.
3.84% of the people in Peoria County, Illinois, claim hispanic ethnicity (meaning 96.16% are non-hispanic).
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