Senjan

Senjan was a city in the Central District of Arak County, Markazi province, Iran. It served as the administrative center for Sedeh Rural District until its capital was transferred to the village of Zamen Jan.

Population
At the time of the 2006 National Census, the city's population was 10,592 in 2,897 households. The following census in 2011 counted 12,249 people in 3,730 households.

In November 2013, Senjan and the former city of Karahrud were merged with the city of Arak. At the same time, Zamen Jan became the capital of Sedeh Rural District.