Qom is the only county of Qom province in the center of Iran; therefore, their location, area and population are the same. The center of this county is Qom city and it islocated 125 kilometers south of Tehran, the capital of Iran. This city is located at the transit and transportation highway of Iran and from one side is the nexus center of the industrial cities of Iran with Tehran and from another side is the liaison between the southern cities of Iran with the northern ones.