| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Osachigongencho (岡谷市) | 394-0081 |
| Postal/ZIP Codes in Osachigosho (岡谷市) | 394-0082 |
| Postal/ZIP Codes in Osachiizuhaya (岡谷市) | 394-0089 |
| Postal/ZIP Codes in Osachikatamacho (岡谷市) | 394-0084 |
| Postal/ZIP Codes in Osachikohagi (岡谷市) | 394-0085 |
| Postal/ZIP Codes in Osachiminamoto (岡谷市) | 394-0086 |
| Postal/ZIP Codes in Osachinashikubo (岡谷市) | 394-0088 |
| Postal/ZIP Codes in Osachishibamiya (岡谷市) | 394-0083 |
| Postal/ZIP Codes in Osachishizume (岡谷市) | 394-0087 |
| Postal/ZIP Codes in Others (岡谷市) | 394-0000 |
| Postal/ZIP Codes in Saiwaicho (岡谷市) | 394-0029 |
| Postal/ZIP Codes in Shimmeicho (岡谷市) | 394-0004 |
| Postal/ZIP Codes in Tanakacho (岡谷市) | 394-0031 |
| Postal/ZIP Codes in Tenryucho (岡谷市) | 394-0035 |
| Postal/ZIP Codes in Tsukamacho (岡谷市) | 394-0026 |
| Postal/ZIP Codes in Uchiyama (岡谷市) | 394-0055 |
| Postal/ZIP Codes in Wakamiya (岡谷市) | 394-0032 |
| Postal/ZIP Codes in Yamashitacho (岡谷市) | 394-0005 |
| Postal/ZIP Codes in Yamatecho (岡谷市) | 394-0041 |
| Postal/ZIP Codes in Yogitogisawa (岡谷市) | 394-0053 |