Jerash is the capital of Jerash Governorate which is situated in the north of Jordan, 30 miles south of the capital Amman.
The total population of the Governorate including the city of Jerash and the nearby villages exceeds 120,000 people. Jerash Governorate's geographical features varies from cold mountains to fertile valleys from ( 1100 to 300 Meters above the sea level), suitable for growing a wide variety of agricultural crops.
Jerash lies on a plain surrounded by hilly wooded areas and fertile basins. Conquered by General Pompey in 63 BC, it came under Roman rule and was one of the ten great Roman cities, the Decapol is League.
Beneath its external Graeco - Roman veneer, Jerash also preserves a subtle blend of east and west. Its architecture, religion and languages reflect a process by which two powerful cultures meshed and coexisted, The Graeco - Roman world of the Mediterranean basin and the traditions of the Arab Orient.
The modern city of Jerash can be found to the east of the ruins. While the old and new share a city wall, careful preservation and planning has seen the city itself develop well away from the ruins so there is no encroachment on the sites of old.