Postal District WA12 Boundary Map
Leaflet | Tiles © Esri — Source: Esri, DeLorme, NAVTEQ, USGS, Intermap, iPC, NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand), TomTom, 2012
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| Postal District Code | WA12 |
| Postal District Name | St. Helens |
| County | Merseyside |
| District | St. Helens |
| Adjacent Postal Districts | WA11 WA2 WA3 WA5 WA9 WN4 |