Tajrish is situated in the Shemiranat County. As of 2006, the neighborhood had 86,000 inhabitants.The Tajrish square itself is known as Sar-e Pol-e Tajrish which means At the Tajrish Bridge. This square is actually a vast bridge on top of a qanat river. In older times the locals used to call this bridge Gowgal, meaning “of the Cow Herd.