NP12 postcode district: Blackwood and around, Caerphilly

NP12 is a postcode district in Wales, with 904 postcodes in use in 6 sectors. It has postcodes in Blackwood, Pontllanfraith, Oakdale and 2 more places. Its council is Caerphilly.

Postcodes in use: 904
Sectors: 6
Council: Caerphilly
Places: 5 places

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in NP12, and which are new since 2020

New since 2020: 30
In use before 2020: 874
Outline: where 5 or more new postcodes since 2020 lie together

Of the 904 postcodes in NP12 that ONS places, 30 are new since 2020 and 874 were in use before 2020.

Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. New since 2020 means it came into use in January 2020 or later. A dashed outline shows where 5 or more lie within 160 metres of each other. It is not a boundary, and no boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.

The middle of its postcodes: latitude 51.6691, longitude -3.1980. Open this area on OpenStreetMap

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; when each came into use: the same directory; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them

The 5 newest postcodes

NP12 0FHJune 2026 NP12 2RUMay 2026 NP12 1FZJune 2025 NP12 2RFFebruary 2025 NP12 1FYNovember 2024

Where the new postcodes lie together

5 new postcodes since 2020, outlined on the map. NP12 2RF, is the newest of them.

What broadband can you get in NP12?

Ofcom reports on 895 of the 904 postcodes in NP12. At 721 of them every home and business can get gigabit broadband, and at 1 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit721 of 895

Postcodes where every home can get superfast847 of 895

Postcodes where some cannot get decent broadband1 of 895

Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.

Check one address on Ofcom's checker

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

What do homes sell for in NP12?

Homes in NP12 sold for a typical £210,000 in the 12 months to August 2026, across 302 sales, no change on the 12 months before, HM Land Registry's figures show.

£210,000 typical price, the 12 months to August 2026

£210,000 12 months to August 2025

■ no change on the 12 months before

Detached £331,500 82 sales
Semi-detached £201,250 134 sales
Terraced £165,000 85 sales
Flat or maisonette 1 sale, too few to price

Each bar is that kind's typical price, against the most expensive kind here.

Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.

Source: HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. How we use it