For any Ubuntu version you need to can do this by the official PostgreSQL Apt Repository.
Ubuntu Yakkety (16.10)
(It is not officialy supported but it works using the Xenial repository.)
sudo add-apt-repository "deb http://apt.postgresql.org/pub/repos/apt/ xenial-pgdg main"
wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
sudo apt-get update
sudo apt-get install postgresql-9.6
Ubuntu Xenial (16.04)
sudo add-apt-repository "deb http://apt.postgresql.org/pub/repos/apt/ xenial-pgdg main"
wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
sudo apt-get update
sudo apt-get install postgresql-9.6
Ubuntu Trusty (14.04)
sudo add-apt-repository "deb http://apt.postgresql.org/pub/repos/apt/ trusty-pgdg main"
wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
sudo apt-get update
sudo apt-get install postgresql-9.6
Ubuntu Precise (12.04)
sudo add-apt-repository "deb http://apt.postgresql.org/pub/repos/apt/ precise-pgdg main"
wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
sudo apt-get update
sudo apt-get install postgresql-9.6
psql -c "ALTER USER postgres WITH PASSWORD 'sis98'" -d template1
sudo pg_dropcluster --stop 9.6 main sudo pg_createcluster --locale en_US.UTF-8 9.6 main
Source:
http://askubuntu.com/questions/831292/how-to-install-postgresql-9-6-on-any-ubuntu-version
http://askubuntu.com/questions/557124/how-to-specify-a-different-locale-for-postgresql-installation
Developer cookbook 