| Country | United States (US) |
| UN/LOCODE | XXD |
| Name | Middlefield |
| Name Without Diacritics | Middlefield |
| Region | CT |
| Function Code | -23----- |
| Function | Rail, Road |
| Status Code | RL (Recognised Location) |
| Date | 607 |
| Location (UN Format) | 4131N 07243W |
| Country | United States (US) |
| UN/LOCODE | XXD |
| Name | Middlefield |
| Name Without Diacritics | Middlefield |
| Region | CT |
| Function Code | -23----- |
| Function | Rail, Road |
| Status Code | RL (Recognised Location) |
| Date | 607 |
| Location (UN Format) | 4131N 07243W |