<Table> Martha's Vineyard <Tr> <Th_colspan="2"> Native name: Noepe Nickname: The Vineyard, The Rock </Th> </Tr> <Tr> <Td_colspan="2"> Map of Martha's Vineyard </Td> </Tr> <Tr> <Td_colspan="2"> Martha's Vineyard </Td> </Tr> <Tr> <Th_colspan="2"> Geography </Th> </Tr> <Tr> <Th> Location </Th> <Td> Dukes County, Massachusetts </Td> </Tr> <Tr> <Th> Coordinates </Th> <Td> 41 ° 24 ′ N 70 ° 37 ′ W ﻿ / ﻿ 41.400 ° N 70.617 ° W ﻿ / 41.400; - 70.617 </Td> </Tr> <Tr> <Th> Archipelago </Th> <Td> Elizabeth Islands </Td> </Tr> <Tr> <Th> Total islands </Th> <Td> </Td> </Tr> <Tr> <Th> Major islands </Th> <Td> </Td> </Tr> <Tr> <Th> Area </Th> <Td> 87.48 sq mi (226.6 km) </Td> </Tr> <Tr> <Th> Length </Th> <Td> 20.5 mi (33 km) </Td> </Tr> <Tr> <Th> Highest elevation </Th> <Td> 311 ft (94.8 m) </Td> </Tr> <Tr> <Th> Highest point </Th> <Td> Peaked Hill </Td> </Tr> <Tr> <Th_colspan="2"> Administration </Th> </Tr> <Tr> <Td_colspan="2"> United States </Td> </Tr> <Tr> <Th> State </Th> <Td> Massachusetts </Td> </Tr> <Tr> <Th> County </Th> <Td> Dukes </Td> </Tr> <Tr> <Th_colspan="2"> Demographics </Th> </Tr> <Tr> <Th> Population </Th> <Td> 16,535 (2010) </Td> </Tr> <Tr> <Th> Pop . density </Th> <Td> 66.2 / km (171.5 / sq mi) </Td> </Tr> <Tr> <Th_colspan="2"> Additional information </Th> </Tr> <Tr> <Th> Official website </Th> <Td> mvy.com </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Native name: Noepe Nickname: The Vineyard, The Rock </Th> </Tr>

What are the dimensions of martha's vineyard
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