| Name | Population | Altitude | Latitude | Longitude | 
| Ichiki : | 
 | 71 m | 31°26'60.0" N | 131°20'60.0" E | 
| Ichimanjocho : | 
 | 182 m | 31°43'59.9" N | 131°5'60.0" E | 
| Ichimanjo : | 
 | 182 m | 31°43'59.9" N | 131°5'60.0" E | 
| Ichimanjomachi : | 
 | 182 m | 31°43'59.9" N | 131°5'60.0" E | 
| Ifukugata : | 
 | 99 m | 32°31'0.1" N | 131°40'1.2" E | 
| Ifukukata : | 
 | 99 m | 32°31'0.1" N | 131°40'1.2" E | 
| Igata : | 
 | 99 m | 32°31'0.1" N | 131°40'1.2" E | 
| Ikata : | 
 | 99 m | 32°31'0.1" N | 131°40'1.2" E | 
| Imabeppu : | 
 | 1 m | 32°4'0.1" N | 131°30'0.0" E | 
| Imabetsu : | 
 | 1 m | 32°4'0.1" N | 131°30'0.0" E | 
| Imabyu : | 
 | 1 m | 32°4'0.1" N | 131°30'0.0" E | 
| Imafuji : | 
 | 533 m | 32°46'0.1" N | 131°22'58.8" E | 
| Imamachi : | 
 | 5 m | 31°26'60.0" N | 131°13'1.2" E | 
| Imatuji : | 
 | 533 m | 32°46'0.1" N | 131°22'58.8" E | 
| Ishigami : | 
 | 500 m | 32°38'60.0" N | 131°31'58.8" E | 
| Ishigawachi : | 
 | 136 m | 32°13'0.1" N | 131°25'1.2" E | 
| Ishigochi : | 
 | 136 m | 32°13'0.1" N | 131°25'1.2" E | 
| Ishikawachi : | 
 | 136 m | 32°13'0.1" N | 131°25'1.2" E | 
| Ishikida : | 
 | 48 m | 31°30'0.0" N | 131°15'0.0" E | 
| Ishinami : | 
 | 71 m | 31°26'60.0" N | 131°20'60.0" E | 
| Isoichi : | 
 | 178 m | 31°43'0.1" N | 131°1'58.8" E | 
| Iwayado : | 
 | 300 m | 32°28'59.9" N | 131°15'0.0" E | 
| Iyawato : | 
 | 300 m | 32°28'59.9" N | 131°15'0.0" E | 
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