The Cosmos is incredibly vast and hosts an incredibly diverse assortment of life on countless planets. But a majority of the galaxy’s sentient population is represented by the core races. All of the core races are familiar with spelljamming technology and have spread throughout the galaxy, and are present on nearly every civilized planet.
Breakdown of Racial Demographics in The Cosmos
Human 38%, Halfling 20%, Dwarf 15%, Elf 10%, Orc 8%, Gnome 3%, Other 6%