NP12 postcode area guide — Caerphilly
House prices, crime, broadband speeds, mobile signal, schools and demographics for the NP12 postcode district in Caerphilly — every official dataset on one page.
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Where is NP12?
Broadband & internet speeds in NP12
Strong coverage
Superfast (30Mb+)
96.5%
Ultrafast (300Mb+)
75.3%
Gigabit-capable
75.3%
Below USO (10Mb)
0%
Broadband availability in the NP12 postcode district (Caerphilly) is Strong — superfast is near-universal and gigabit is rolling out. Across the 895 postcodes Ofcom measures in NP12, superfast broadband (30 Mbit/s or faster) reaches 96.5% of premises and gigabit-capable lines are available to 75.3%.
Around 0% of premises in NP12 fall below the Universal Service Obligation (a minimum of 10 Mbit/s download and 1 Mbit/s upload), so the overwhelming majority of homes and businesses here can already order a decent fixed line. For a business that depends on its connection, the figures that matter most are gigabit and full-fibre availability — the symmetric, low-contention services we quote leased lines and FTTP against.
Sample postcodes in NP12
| Postcode | Superfast | Gigabit |
|---|---|---|
| NP12 0AA | 100% | 100% |
| NP12 0AB | 100% | 100% |
| NP12 0AD | 100% | 100% |
| NP12 0AE | 100% | 100% |
| NP12 0AG | 90% | 90% |
| NP12 0AH | 100% | 100% |
| NP12 0AJ | 0% | 0% |
| NP12 0AL | 100% | 74.1% |
| NP12 0AN | 100% | 83.3% |
| NP12 0AP | 100% | 88.2% |
Run a speed test to see what you're actually getting, or check your exact postcode.
Mobile signal around Caerphilly
Ofcom's coverage model for the wider Caerphilly district (84,902 premises):
4G indoors — all networks
94.3%
4G outdoors — all networks
99.9%
5G outdoors — all networks
6%
Voice indoors — all networks
96.8%
Signal varies street by street — use the mobile coverage checker to compare EE, O2, Three and Vodafone at an exact postcode.
Crime in NP12
Police recorded 176 incidents within about a mile of the centre of NP12 in May 2026 (latest published street-level data). The breakdown:
| Category | Incidents | Share |
|---|---|---|
| Violence & sexual offences | 62 | 35.2% |
| Anti-social behaviour | 31 | 17.6% |
| Public order | 16 | 9.1% |
| Vehicle crime | 14 | 8.0% |
| Burglary | 12 | 6.8% |
| Criminal damage & arson | 12 | 6.8% |
| Other theft | 11 | 6.3% |
| Shoplifting | 5 | 2.8% |
Raw counts favour busy town centres — a high street with shops and nightlife records more incidents than a residential cul-de-sac. Source: police.uk open data (point sample around the district centroid).
House prices in NP12
Based on 281 sales registered with HM Land Registry in the last 12 months, the median sold price in NP12 is £203,000, up 1.5% on the previous year (£200,000).
Detached
£320,000
68 sales
Semi-detached
£200,000
120 sales
Terraced
£165,000
83 sales
Latest recorded sales in NP12
| Date | Price | Type | Street | Postcode |
|---|---|---|---|---|
| 22 May 2026 | £170,000 | Terraced | Albany Road | NP12 1DZ |
| 22 May 2026 | £172,000 | Semi-detached | Pinewood Court | NP12 2PA |
| 1 May 2026 | £179,000 | Terraced | Markham Terrace | NP12 0RB |
| 30 Apr 2026 | £335,000 | Detached | Oak Street | NP12 1PY |
| 29 Apr 2026 | £269,000 | Detached | Cae'r Delyn | NP12 0NW |
| 29 Apr 2026 | £480,000 | Detached | Waun Goch Road | NP12 0LJ |
| 27 Apr 2026 | £150,000 | Terraced | Islwyn Terrace | NP12 2LJ |
| 24 Apr 2026 | £333,000 | Detached | Cae'r Garreg | NP12 0PA |
| 24 Apr 2026 | £270,000 | Detached | Ashgrove | NP12 1WR |
| 24 Apr 2026 | £280,000 | Semi-detached | Cefn Road | NP12 1QA |
Contains HM Land Registry data © Crown copyright and database right 2026, licensed under the Open Government Licence v3.0.
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Who lives here? Caerphilly demographics
Census 2021 figures for the wider Caerphilly district (175,952 residents, 76,255 households):
| Age profile | |
|---|---|
| Under 15 | 18.5% |
| 15–29 | 22.1% |
| 30–44 | 18.7% |
| 45–64 | 20.7% |
| 65+ | 20.1% |
| Housing tenure | |
|---|---|
| Owner-occupied | 67.5% |
| Private rented | 13.4% |
| Social rented | 5.6% |
Source: ONS Census 2021 (district level — the finest openly licensed cut we republish). © Crown copyright, OGL v3.0.
Schools in and around NP12
| School | Phase | Ages | Pupils | Postcode |
|---|---|---|---|---|
| Pengam Primary School | Not applicable | — | — | NP12 3ST |
| Fleur-De-Lys Primary School | Not applicable | — | — | NP12 3UX |
| Markham Primary School | Not applicable | — | — | NP12 0QD |
| Libanus Primary School | Not applicable | — | — | NP12 1EH |
| Pontllanfraith Primary School | Not applicable | — | — | NP12 2DN |
| Bryn Primary School | Not applicable | — | — | NP12 2PL |
| Ysgol Gymraeg Trelyn | Not applicable | — | — | NP12 3ST |
| Cefn Fforest Primary School | Not applicable | — | — | NP12 3JX |
Source: DfE Get Information about Schools (England & Wales). Check Ofsted report cards for inspection detail — headline one-word grades were retired in 2024.
Food hygiene ratings in NP12
255 rated food businesses operate in NP12. 139 hold the top rating of 5, 55 are rated 4, and 11 are rated 2 or below.
Among the 5-rated: @A.M, Aldi, Amici Italian Ltd, Angelo's Food Store, Applied Nutritional Research Limited.
Source: Food Standards Agency, food hygiene ratings (FHRS) open data.
Energy performance (EPC) in NP12
From a sample of 217 Energy Performance Certificates across 11 NP12 postcodes, the most common rating is band D (average band D). 29% of sampled homes are rated C or better.
Band A
0%
Band B
12%
Band C
17%
Band D
47%
Band E
19%
Band F
4%
Source: MHCLG Energy Performance of Buildings Data (England & Wales), sampled at postcode level and refreshed monthly. Individual certificates are on each postcode’s page.
Phone area codes for Caerphilly
Landlines around NP12 typically use:
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What's it like living in NP12?
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Moving to NP12? Sort your connectivity first
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Postcodes in NP12
Neighbouring districts
All Newport (NP) postcode districts ›
Frequently asked questions
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Sources: HM Land Registry Price Paid Data, police.uk street-level crime, Ofcom Connected Nations, ONS Census 2021, DfE Get Information about Schools, Food Standards Agency FHRS — all © Crown copyright, licensed under the Open Government Licence v3.0. Figures are area aggregates; individual addresses vary. Energy performance (EPC) data will be added when our Open Data Communities registration is approved.