<Tr> <Td> Gulf of Mexico, Marquesas Keys </Td> <Td> Key West </Td> <Td> Stock Island, Cow Key </Td> </Tr> <Tr> <Td> Gulf of Mexico, Sand Key </Td> <Td> Atlantic Ocean </Td> <Td> Atlantic Ocean </Td> </Tr> <P> Key West is located at 24 ° 33 ′ 33" N 81 ° 47 ′ 03" W ﻿ / ﻿ 24.55917 ° N 81.78417 ° W ﻿ / 24.55917; - 81.78417 . The maximum elevation above sea level is about 18 feet (5 m), a 1 - acre (4,000 m) area known as Solares Hill . </P> <P> According to the United States Census Bureau, the city has a total area of 7.4 square miles (19 km), of which 5.9 square miles (15 km) is land and 1.5 square miles (3.9 km) (19.73%) is water . </P>

What is the highest elevation of key west