Based on the belief that peace can be achieved by building understanding between ordinary people, the Sister City program was introduced to the world by the United States' Eisenhower Government in 1952.
To this day, Sister City relationships encourage cultural and social contact, as well as giving the cities involved the chance to explore educational and economic opportunities.
Rockdale City Council has Sister City links with these cities:
- Takeo, Cambodia
- Tanggu, China
- Bitola, Macedonia
- Glyfada, Greece
- Bint Jbeil, Lebanon
- Yamatsuri, Japan
- Gilgandra, Australia
- Rockdale City Council also has a Friendship City link with Arica in Chile. This community-based link explores cultural and economic opportunities between the communities of Rockdale and Arica.