Grand Theft Auto IV is set in the year 2008 and 2009. Grand Theft Auto IV is set in the fictional city of Liberty City. There are five boroughs in Liberty City. There are four boroughs in the redesigned city of Liberty City. The four boroughs are Broker, Bronx, Alderny, and Alonquin. The four boroughs of Liberty City are based on the four boroughs of New York. Broker is Brooklyn, Queens is Dukes, Bronx is Bohand, and Alonquin is Manhattan.