SHELL

postgres install mac

$ brew install postgresql

install psql mac

brew install postgresql

install postgres mac client

You could use homebrew to install libpq.

brew install libpq

This would give you psql, pg_dump and a whole bunch of other client utilities without installing Postgres.

Unfortunately since it provides some of the same utilities as are included in the full postgresql package, brew installs it "keg-only" which means it isn't in the PATH by default. Homebrew will spit out some information on how to add it to your PATH after installation. In my case it was this:

echo 'export PATH="/usr/local/opt/libpq/bin:$PATH"' >> ~/.zshrc

Alternatively, you can create symlinks for the utilities you need. E.g.:

ln -s /usr/local/Cellar/libpq/10.3/bin/psql /usr/local/bin/psql

install psql mac

make sure yu have homebrew installed and updated, then run
$ brew install libpq
$ brew link --force libpq ail