<Table> <Tr> <Th_colspan="2"> United Church of Christ </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Classification </Th> <Td> Protestant </Td> </Tr> <Tr> <Th> Orientation </Th> <Td> Reformed </Td> </Tr> <Tr> <Th> Polity </Th> <Td> Covenantal </Td> </Tr> <Tr> <Th> Associations </Th> <Td> Churches Uniting In Christ National Council of Churches World Communion of Reformed Churches World Council of Churches </Td> </Tr> <Tr> <Th> Region </Th> <Td> United States </Td> </Tr> <Tr> <Th> Headquarters </Th> <Td> Cleveland, Ohio </Td> </Tr> <Tr> <Th> Origin </Th> <Td> 1957 </Td> </Tr> <Tr> <Th> Merger of </Th> <Td> Evangelical and Reformed Church and the Congregational Christian Churches </Td> </Tr> <Tr> <Th> Congregations </Th> <Td> 5,000 </Td> </Tr> <Tr> <Th> Members </Th> <Td> 880,383 members in 5,000 congregations (2016) </Td> </Tr> <Tr> <Th> Official website </Th> <Td> www.ucc.org </Td> </Tr> <Tr> <Th> Logo </Th> <Td> </Td> </Tr> </Table> <Tr> <Th_colspan="2"> United Church of Christ </Th> </Tr>

When was the first church of christ founded