Areas of Okayama
- Aida-gun (4)
- Akaiwa Shi (31)
- Asakuchi Shi (18)
- Bizen Shi (23)
- Ibara Shi (24)
- Kaga-gun (4)
- Kasaoka Shi (16)
- Katsuta-gun (10)
- Kurashiki Shi (56)
- Maniwa Shi (9)
- Maniwa-gun (3)
- Mimasaka-shi (15)
- Niimi Shi (20)
- Oda-gun (2)
- Okayama Shi (196)
- Setouchi Shi (22)
- Takahashi Shi (11)
- Tamano Shi (74)
- Tomata-gun (1)
- Tsukubo-gun (3)
- Tsuyama Shi (12)
- Wake-gun (5)
Cities of Okayama
The number in parentheses indicates the number of routes.