| region | Municipality names |
|---|---|
| Prefecture northern region | Hitachi-shi |
| Hitachinaka-sh | |
| Hitachiota-shi | |
| Takahagi-shi | |
| Kitaibaraki-shi | |
| Hitachiomiya-shi | |
| Naka-shi | |
| Tokai-mura | |
| Daigo-machi | |
| Prefecture central region | Mito-shi |
| Kasama-shi | |
| Omitama-shi | |
| Ibaraki-machi | |
| Oarai-machi | |
| Shirosato-machi | |
| Rokko region | Kashima-shi |
| Itako-shi | |
| Kamisu-shi | |
| Hokota-shi | |
| Namegata-shi | |
| Prefecture southern region | Tsukuba-shi |
| Tsuchiura-shi | |
| Toride-shi | |
| Ushiku-shi | |
| Ryugasaki-shi | |
| Ishioka-shi | |
| Moriya-shi | |
| Inashiki-shi | |
| Kasumigaura-shi | |
| Tsukubamirai-shi | |
| Ami-machi | |
| Kawachi-machi | |
| Miho-mura | |
| Tone-machi | |
| Prefecture western region | Koga-shi |
| Chikusei-shi | |
| Joso-shi | |
| Bando-shi | |
| Yuki-shi | |
| Sakuragawa-shi | |
| Shimotsuma-shi | |
| Yachiyo-machi | |
| Goka-machi | |
| Sakai-machi |