¶17 square miles could accommodate 13 more Central Parks, nearly a third of Washington, D.C., about three dozen versions of Vatican City and nearly two dozen replicas of Monaco. ¶If 17 square miles were populated at Manhattan’s density, New York might be home to as many as 1.1 million more people. ¶At the price of an acre in Midtown, as recently computed by the Federal Reserve Bank of New York, 17 square miles could be worth $1 trillion.
http://www.nytimes.com/2008/05/22/nyregion/22shrink.html
Jamaica, Vermont. Jamaica is a town in Windham County, Vermont, United States. The population was 946 at the 2000 census. Jamaica includes the villages of East Jamaica and Rawsonville.
https://en.wikipedia.org/wiki/Jamaica,_Vermont
That said, about seven square miles of the difference could be accounted for by better measurements of the islands and peninsulas in Jamaica Bay. And it appears that Brooklyn shrank the most, by about 12 percent, to 72 square miles from 82.
http://www.nytimes.com/2008/05/22/nyregion/22shrink.html
Therefore, it seems to me, Jamaica could lay claim to having the first post office in the entire Western Hemisphere. Jamaica has the most 'churches' per square mile of any country in the world. (Source: Guinness Book of World Records). That's another 'fact' making the rounds. I have not been able to actually verify same with 'Guinness', but ever since I have known myself, I have heard this said about Jamaica.
http://jamaica-gleaner.com/gleaner/20110717/cleisure/cleisure5.html
The calculation of area to length can only be don…e if the width of the target length is known. If you want to convert 32.24 square miles of asphalt to roadway that is .1 miles wide, you can make 322.4 miles of road. 4 JAYS.
http://www.answers.com/Q/How_many_square_miles_is_Jamaica
LOCATION AND SIZE. The largest English-speaking island in the Caribbean Sea, Jamaica is about 160 kilometers (90 miles) south of Cuba and has an area of 10,990 square kilometers (4,243 square miles) and a total coastline of 1,022 kilometers (634 miles). Comparatively, the area occupied by Jamaica is slightly smaller than the state of Connecticut.
http://www.nationsencyclopedia.com/economies/Americas/Jamaica.html
Within the entire forty-two square-mile township developed as many as ten separate hamlets, each surrounded by outlying farms and linked to Jamaica Village by a network of roads. Eventually there were as many as fourteen one-room schools which served the families in the outlying areas.
https://en.wikipedia.org/wiki/Jamaica,_Vermont
The distance from New Orleans, LA to Montego Bay, Jamaica is 1100  miles. A flight there, on average takes about 2 hours, 48 minutes.
http://www.answers.com/Q/How_many_square_miles_is_Jamaica
According to the United States Census Bureau, the town has a total area of 49.5 square miles (128 km2), of which 49.3 square miles (128 km2) is land and 0.1 square miles (0.26 km2) (0.20%) is water. The West River flows through the town. Jamaica is crossed by Vermont Route 30 (concurrent with Vermont Route 100).
https://en.wikipedia.org/wiki/Jamaica,_Vermont
Then again, how many know that Jamaica is the first British colonial territory to establish a postal service (in 1688) having been the first colony England acquired by conquest. This web 'fact' is incorrect in one respect.
http://jamaica-gleaner.com/gleaner/20110717/cleisure/cleisure5.html
jamaica how many sq miles
Jamaica is spanning 4,243 square miles. Jamaica is 4,243 square miles.