KARAJ (کرج)(also spelled Kerej or Karadj), a town in Tehran province, located 36 km west of the city of Tehran on the western bank of the Karaj River (lat 35° 46ʹ N, long 50° 49ʹ E; elev., 1,360 m). It has an average yearly rainfall of 188 m., average temperature maximum 21.3°C and minimum 8.9°. This entry is divided into two sections:

i. Modern city.

ii. Population.