This council’s recorded friendship relationships are listed below.
| Partner | Country | Relationship | Since |
|---|---|---|---|
| Hakone | Japan | Sister city | 1987-10 |
| Kitashiobara | Japan | Friendly city | 1997-11 |
| Nouméa | New Caledonia | Sister city | 1995 |
| Shaoxing | China | Friendly city | 2014-07 |
| Suzhou | China | Sister city | 2008-02-07 |