The answer depends on which Kirk is meant:
- James T. Kirk, the fictional Star Trek character, was born and raised in Riverside, Iowa. He also lived for a time on the planet Tarsus IV but is most famously associated with being from Riverside, Iowa, on Earth.
- Charlie Kirk, the American political activist, was born and raised in the Chicago suburbs of Arlington Heights and Prospect Heights in Illinois. Later, he moved his organization to a business park near a Phoenix resort in Arizona.
If referring to the most famous Kirk (James T. Kirk of Star Trek), his canonical earthly home is Riverside, Iowa.
