Hey I found this two webpages with some info on locations of consulates and High Comissions from Jamaica in the world, take a look, choose the closest one and contact them for info

http://www.mfaft.gov.jm/?q=consul_generals_and_consulates

and this one

http://www.mfaft.gov.jm/?q=embassies_and_high_commissions

Also check in the main Foreign Affairs Authority page

http://www.mfaft.gov.jm/

Hope it works for you

Regards!!