<Tr> <Th> Time zone </Th> <Td> Eastern: UTC − 5 / − 4 </Td> </Tr> <Tr> <Th> Website </Th> <Td> www.pinellascounty.org </Td> </Tr> <P> Pinellas County is a county located in the state of Florida . As of the 2010 census, the population was 916,542 . The county is part of the Tampa--St. Petersburg--Clearwater, Florida Metropolitan Statistical Area . Clearwater is the county seat, and St. Petersburg is the largest city . </P> <P> Prior to European exploration and settlement the Pinellas peninsula, like all of Tampa Bay, was inhabited by the Tocobaga Indians, who built a town and large temple mound overlooking the bay in what is now Safety Harbor . The modern site is protected and can be visited as part of the County's Philippe Park . </P>

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