| Municipality | Total population (2020) | Change by 2050 (vs 2020) | Share aged 65+ | Akiya (vacancy) rate |
|---|---|---|---|---|
| 01Saga(佐賀市) | 233,301 | -16.7% | 27.8% | 15.6% |
| 02Karatsu(唐津市) | 117,373 | -31.6% | 32.7% | 14.8% |
| 03Tosu(鳥栖市) | 74,196 | -2.4% | 24.2% | 12.1% |
| 04Imari(伊万里市) | 52,629 | -32.2% | 32.1% | 12.6% |
| 05Takeo(武雄市) | 47,914 | -23.7% | 31.4% | 13.3% |
| 06Ogi(小城市) | 43,952 | -22.1% | 28.7% | 11.7% |
| 07Kanzaki(神埼市) | 31,022 | -24.7% | 31.5% | 13.7% |
| 08Kashima(鹿島市) | 27,892 | -36.7% | 32.8% | 12.7% |
| 09Ureshino(嬉野市) | 25,848 | -37.5% | 35.7% | 14.4% |
| 10Miyaki(みやき町) | 25,511 | -18.0% | 34.7% | 11.8% |
| 11Shiroishi(白石町) | 22,051 | -43.1% | 36.2% | 15.8% |
| 12Arita(有田町) | 19,010 | -37.0% | 35.3% | 10.9% |
| 13Taku(多久市) | 18,295 | -43.7% | 36.9% | 16.8% |
| 14Kiyama(基山町) | 17,250 | -23.9% | 31.0% | 9.7% |
| 15Yoshinogari(吉野ヶ里町) | 16,323 | -13.5% | 24.3% | 19.7% |
| 16Kohoku(江北町) | 9,566 | -13.1% | 28.5% | — |
| 17Kamimine(上峰町) | 9,286 | -13.9% | 26.1% | — |
| 18Tara(太良町) | 8,121 | -50.3% | 38.9% | — |
| 19Omachi(大町町) | 6,293 | -43.2% | 40.8% | — |
| 20Genkai(玄海町) | 5,609 | -40.6% | 31.6% | — |