This council’s recorded friendship relationships are listed below.
| Partner | Country | Relationship | Since |
|---|---|---|---|
| Adelaide | Australia | Sister city | 1972 |
| Christchurch | United Kingdom | Sister city | 1972 |
| Gansu | China | Sister province / state | 1984-04-22 |
| Kurashiki | Japan | Sister city | 1973-03-07 |
| Seattle | United States | Sister city | 1981 |
| Shenzhen | China | Sister city | 2026 |
| Songpa (Seoul) | South Korea | Sister city | 1995-02 |
| Wuhan | China | Sister city | 2006-04-04 |