| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Nakamichi (長井市) | 993-0053 |
| Postal/ZIP Codes in Narita (長井市) | 993-0075 |
| Postal/ZIP Codes in Omachi (長井市) | 993-0083 |
| Postal/ZIP Codes in Others (長井市) | 993-0000 |
| Postal/ZIP Codes in Saiwaicho (長井市) | 993-0051 |
| Postal/ZIP Codes in Sakaemachi (長井市) | 993-0084 |
| Postal/ZIP Codes in Shimizucho (長井市) | 993-0054 |
| Postal/ZIP Codes in Shimmachi (長井市) | 993-0052 |
| Postal/ZIP Codes in Shimmeicho (長井市) | 993-0004 |
| Postal/ZIP Codes in Shimoisazawa (長井市) | 993-0023 |
| Postal/ZIP Codes in Shirosagi (長井市) | 993-0071 |
| Postal/ZIP Codes in Tatemachi Kita (長井市) | 993-0011 |
| Postal/ZIP Codes in Tatemachi Minami (長井市) | 993-0013 |
| Postal/ZIP Codes in Teraizumi (長井市) | 993-0061 |
| Postal/ZIP Codes in Tokamachi (長井市) | 993-0086 |
| Postal/ZIP Codes in Tokiniwa (長井市) | 993-0035 |
| Postal/ZIP Codes in Utamaru (長井市) | 993-0034 |
| Postal/ZIP Codes in Yashiromachi (長井市) | 993-0002 |
| Postal/ZIP Codes in Yokomachi (長井市) | 993-0087 |
| Postal/ZIP Codes in Yotsuya (長井市) | 993-0015 |