Only partially. Anyplace where you want to live has zoning that limits how many people can live there. Zoning won't stop you from building out on some ranch in the middle of nowhere (ranches are getting bigger so you can find some no longer used homestead to rebuild). However zoning will stop you from building in a city.
Yeah, but zoning outside of the city is a. Much more permissive, b. There are many places to build, and c. There is little demand for the type of housing that is blocked by zoning (ie. Fourlplexes and above) outside of the city.