Monmouthshire
21 postcode sectors mapped mainly to Monmouthshire. Choose a district or browse the guides below. These are postcode sectors, not named neighbourhood boundaries.
Postcode districts
Area guides
21 sectors
- NP15 1Near Llantrisant Fawr
- NP15 2Near Llanarth
- NP15 9Near Llanbadoc
- NP16 5Near Chepstow
- NP16 6Near Devauden
- NP16 9Near Chepstow
- NP18 1Near Llangybi
- NP25 3Near Dixton
- NP25 4Near Cwmcarvan
- NP25 5Near Llanvihangel Ystern Llewern
- NP25 9Near Dixton
- NP26 4Near Caldicot
- NP26 9Near Caldicot
- NP4 0Near Llanbadoc
- NP7 0Near Clydach
- NP7 1Near Abergavenny
- NP7 5Near Abergavenny
- NP7 6Near Abergavenny
- NP7 7Near Forest Coal Pit
- NP7 8Near Skenfrith
- NP7 9Near Gobion Fawr
Authority grouping uses mapped sector boundaries from the Office for National Statistics, December 2025. It measures boundary area, not the number of addresses or residents. Guide names describe a place near the approximate sector centre.