The City of Domes is the sole remaining outpost of humanity in the future of Logan's Run.
Most of the inhabitants of the City accept their lot in life, knowing that when they reach the age of 30, they must submit themselves to die in the ritual of Carousel. Those who refuse to report to Carousel and attempt to flee the City are known as Runners.
In the theatrical film, the city is not given a name. It is simply referred to as "the city".