The postal-codes of Holwell is SG5. The City of Holwell is in Hertfordshire. The country of Hertfordshire is England (ENG)
The holwell postcode region (AB) contains 34 unique 'outward' codes. holwell is the main postal town or district for this region, with all holwell postcodes starting with the following outward codes.
This page contains a list of postcodes for holwell area. Select a holwell postcode to see the map location, demographics, house prices, local information, tourist guides and statistics:
There are a number of local information, guides and useful data to browse and explore, whether you're a holwell resident or a visitor to the holwell area.