I (Kamogawa-shi) Ichiihara (Aso-gun) Ioji (Aso-gun) Idenokuchi (Aso-gun) Ideshita (Aso-gun) Ideguchi (Kamimashiki-gun) Iida (Kimitsu Shi) Isobe (Kimitsu Shi) Ikaridai (Kimitsu Shi) Ichinosawa (Kimitsu Shi) Iwasaki (Isumi-gun) Itō (Isumi-gun) Ichibe (Chōsei-gun) Iwakawa-kami (Chōsei-gun) Ichinono-kami (Chōsei-gun) Ichinono-shimo (Chōsei-gun) Iwakawa-shimo (Chōsei-gun) Iio (Kisarazu Shi) Ichinono (Kisarazu Shi) Izumiyatsu (Kisarazu Shi) Izui (Kisarazu Shi) Ishigawara (Kisarazu Shi) Ishizawa (Sodegaura-shi) Ishagoda (Sodegaura-shi) Iwaisaku (Sodegaura-shi) Idojiri (Sodegaura-shi) Ishikawa (Sodegaura-shi) Ichigahara (Sodegaura-shi) Inokuradai (Sodegaura-shi) Iwaimae (Sodegaura-shi) Inugakubo 9 10 11 12 13