Postal Code 69818 Boundary Map
Leaflet | Tiles © Esri — Source: Esri, DeLorme, NAVTEQ, USGS, Intermap, iPC, NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand), TomTom, 2012
Postal Code 69818 Profile
| Postal Code Place Name | Unión |
| State | Oaxaca |
| Municipality | San Martín Huamelúlpam |
| Area km² | 19.12730789 |