1 1564。 The international postal code inquiry website shows that the postal code of Saudi Arabia is 1 1564, in which the first two digits indicate the postal area and the last three digits indicate the delivery point. Saudi Arabia is located in the Arabian Peninsula, bordering the Persian Gulf in the east and the Red Sea in the west, bordering Jordan, Iraq, Kuwait, United Arab Emirates, Oman, Yemen and other countries, and connected with Bahrain through King Fahd Bridge. The coastline is 2448 kilometers long and the terrain is high in the west and low in the east. Except for the subtropical Mediterranean climate in the southwest plateau and the northern region, the climate in other regions is tropical desert.