Green Castle is a place in St. Mary, Jamaica. Green Castle is situated nearby to the hamlets Water Valley and Salem.

Type: Locality
Category: Human Settlement
Latitude: 18.28333° or 18° 17' north
Longitude: -76.81667° or 76° 49' west
Elevation: 21 metres (69 feet)
Population: N/A
Parish: Saint Mary Parish
County: Middlesex County
Country: Jamaica
Region: Caribbean