What if the Human race were fantasy creatures to races we think are myths (ie elves, dwarves, kobolds etc...). -- AmberFox
The world is big, bigger than you think it is. A shire may be enough for a Halfling, but there are entire mountains and valleys that have not been traversed by one being. There are realms in which the people who live there believe that they are the only people in the world. Then they meet other people... and the world gets even bigger.
Omnidale is not one of those isolated towns. As a hub of trade and commerce, one can meet all kinds of folks operating under the Pax Mercator. Goblinoids haggle with Dwarves and Dragonborn over the price of dried fish. Elves wrangle against ogres for building materials. All is well.