<Tr> <Th> Time zone </Th> <Td> Central: UTC − 6 / − 5 </Td> </Tr> <Tr> <Th> Website </Th> <Td> www.co.peoria.il.us </Td> </Tr> <P> Peoria County is a county in the U.S. state of Illinois . According to the 2010 census, it had a population of 186,494 . Its county seat is Peoria . </P> <P> Peoria County is part of the Peoria, IL Metropolitan Statistical Area . </P>

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