Trelawny has a land area of approximately 352 square miles. The population as of 2009 was 75,799 according to the Statistical Institute of Jamaica, making it the second least populated Jamaican parish.
Trelawny was created in 1774 when the St. James parish was divided. The parish is named after the former Jamaican colony Governor Sir William Trelawny. The capital city of the parish is the coastal city of Falmouth. The original parish capital was located inland in the city of Martha Brea.
The main products produced in Trelawny are rum and sugar. Secondary products include pimento, ginger, bananas and dye woods. There are several sugar factories located in the parish. Coastal communities are also popular with tourists.