Piatt County is located in central Illinois. The County Seat is Monticello and the largest city is Monticello. The Official Web Site is located at http://www.piattcounty.org/. The 2014 population estimate is 16,431 and the 2010 census population was 16,727. The land area is 439.20 square miles and there are 38.1 persons per square mile.
97.7% of the population is White, 0.5% is Black or African American, 1.1% is Hispanic or Latino, 0.4% is Asian, 0.2% is American Indian or Alaska Native, 0% is Native Hawaiian or Pacific Islander, and 1.1% is two or more races. 92.7% have a high school degree or higher, and 26.5% have a Bachelor degree or higher.
The median home value is $120,800, there are 6,546 households, an average of 2.52 persons per household. The per capita income is $31,190, the median household income is $63,027, and 6.2% of the persons in Piatt County are considered below poverty level.
The total number of firms, at last estimate, was 1,407. Retail sales (in $1000) were $118,815, and sales per capita were $7,220.
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