If we step back and look at the universe of galaxies, we see that they, like stars, congregate into clusters.
Our Milky Way galaxy belongs to the Local Group. This cluster also contains the Andromeda Galaxy, the Pinwheel Galaxy (M33), and the Magellanic Clouds, but most of its 30 or so members are dwarf ellipticals and irregulars.
The nearest large cluster, the Virgo Cluster, contains 2,500 galaxies. Though it lies some 65 million light-years away, it covers more than 45 degrees of sky.