<Table> <Tr> <Th_colspan="2"> Maricopa County Sheriff's Office </Th> </Tr> <Tr> <Th> Abbreviation </Th> <Td> MCSO </Td> </Tr> <Tr> <Th_colspan="2"> </Th> </Tr> <Tr> <Td_colspan="2"> Patch of the Maricopa County Sheriff's Office </Td> </Tr> <Tr> <Th_colspan="2"> Agency overview </Th> </Tr> <Tr> <Th> Formed </Th> <Td> 1871 </Td> </Tr> <Tr> <Th> Employees </Th> <Td> 3,300 </Td> </Tr> <Tr> <Th> Legal personality </Th> <Td> Governmental: Government agency </Td> </Tr> <Tr> <Th_colspan="2"> Jurisdictional structure </Th> </Tr> <Tr> <Th> Operations jurisdiction * </Th> <Td> County of Maricopa in the state of Arizona, U.S. </Td> </Tr> <Tr> <Th> Size </Th> <Td> 9,224 square miles (23,890 km) </Td> </Tr> <Tr> <Th> Population </Th> <Td> 4,242,997 (est 2016) </Td> </Tr> <Tr> <Th> General nature </Th> <Td> <Ul> <Li> Law enforcement </Li> <Li> Civilian police </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Operational structure </Th> </Tr> <Tr> <Th> Headquarters </Th> <Td> Phoenix, Arizona </Td> </Tr> <Tr> <Th> Agency executive </Th> <Td> Paul Penzone, Sheriff of Maricopa County </Td> </Tr> <Tr> <Th_colspan="2"> Facilities </Th> </Tr> <Tr> <Th> Aviation Units </Th> <Td> Bell 407, OH - 58, TH - 55, Cessna 206, and Piper Navajo </Td> </Tr> <Tr> <Th_colspan="2"> Website </Th> </Tr> <Tr> <Td_colspan="2"> Official Website </Td> </Tr> <Tr> <Th_colspan="2"> Footnotes </Th> </Tr> <Tr> <Td_colspan="2"> * Divisional agency: Division of the country, over which the agency has usual operational jurisdiction . </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Maricopa County Sheriff's Office </Th> </Tr>

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