| Postal Code | Area | |
|---|---|---|
| 321-2332 | Omuro (大室) | View |
| 321-2333 | Usuizawa (薄井沢) | View |
| 321-2334 | Mizunashi (水無) | View |
| 321-2335 | Moritomo (森友) | View |
| 321-2336 | Otorozawa (荊沢) | View |
| 321-2341 | Osawamachi (大沢町) | View |
| 321-2342 | Nemuro (根室) | View |
| 321-2343 | Yamaguchi (山口) | View |
| 321-2344 | Inokura (猪倉) | View |
| 321-2345 | Kiwadashima (木和田島) | View |
| 321-2351 | Shionomuromachi (塩野室町) | View |
| 321-2352 | Kobayashi (小林) | View |
| 321-2353 | Kutsukake (沓掛) | View |
| 321-2354 | Katakura (嘉多蔵) | View |
| 321-2355 | Sawamata (沢又) | View |
| 321-2356 | Yanokuchi (矢野口) | View |
| 321-2401 | Kawamuro (川室) | View |
| 321-2402 | Owatari (大渡) | View |
| 321-2403 | Machiya (町谷) | View |
| 321-2404 | Todoroku (轟) | View |