NP18 postcode area guide — Monmouthshire
House prices, crime, broadband speeds, mobile signal, schools and demographics for the NP18 postcode district in Monmouthshire — every official dataset on one page.
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Where is NP18?
Broadband & internet speeds in NP18
Strong coverage
Superfast (30Mb+)
91.4%
Ultrafast (300Mb+)
70.9%
Gigabit-capable
68.1%
Below USO (10Mb)
0.3%
Broadband availability in the NP18 postcode district (Monmouthshire) is Strong — superfast is near-universal and gigabit is rolling out. Across the 484 postcodes Ofcom measures in NP18, superfast broadband (30 Mbit/s or faster) reaches 91.4% of premises and gigabit-capable lines are available to 68.1%.
Around 0.3% of premises in NP18 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 NP18
| Postcode | Superfast | Gigabit |
|---|---|---|
| NP18 1AA | 100% | 0% |
| NP18 1AB | 70% | 20% |
| NP18 1AD | 100% | 0% |
| NP18 1AE | 61.9% | 4.8% |
| NP18 1AF | 100% | 71.4% |
| NP18 1AG | 82.9% | 0% |
| NP18 1AH | 100% | 0% |
| NP18 1AJ | 100% | 0% |
| NP18 1AL | 100% | 100% |
| NP18 1AN | 100% | 100% |
Run a speed test to see what you're actually getting, or check your exact postcode.
Mobile signal around Monmouthshire
Ofcom's coverage model for the wider Monmouthshire district (46,774 premises):
4G indoors — all networks
83%
4G outdoors — all networks
96.3%
5G outdoors — all networks
44.7%
Voice indoors — all networks
87.4%
Signal varies street by street — use the mobile coverage checker to compare EE, O2, Three and Vodafone at an exact postcode.
Crime in NP18
Police recorded 73 incidents within about a mile of the centre of NP18 in May 2026 (latest published street-level data). The breakdown:
| Category | Incidents | Share |
|---|---|---|
| Violence & sexual offences | 27 | 37.0% |
| Anti-social behaviour | 14 | 19.2% |
| Shoplifting | 9 | 12.3% |
| Public order | 8 | 11.0% |
| Other theft | 6 | 8.2% |
| Criminal damage & arson | 4 | 5.5% |
| Vehicle crime | 4 | 5.5% |
| Bicycle theft | 1 | 1.4% |
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 NP18
Based on 210 sales registered with HM Land Registry in the last 12 months, the median sold price in NP18 is £325,000, down 2.3% on the previous year (£332,500).
Detached
£410,000
102 sales
Semi-detached
£277,000
52 sales
Terraced
£210,000
48 sales
Flat / maisonette
£124,000
5 sales
Latest recorded sales in NP18
| Date | Price | Type | Street | Postcode |
|---|---|---|---|---|
| 11 May 2026 | £175,000 | Terraced | White Ash Glade | NP18 3RB |
| 1 May 2026 | £339,950 | Detached | NP18 2DZ | |
| 1 May 2026 | £211,000 | Terraced | Waltwood Road | NP18 2HP |
| 1 May 2026 | £408,500 | Detached | Pen Y Wal Drive | NP18 2FA |
| 24 Apr 2026 | £290,000 | Detached | Blossom Close | NP18 2LT |
| 24 Apr 2026 | £518,000 | Detached | Pen Y Wal Drive | NP18 2EL |
| 17 Apr 2026 | £440,000 | Terraced | Bulmore Road | NP18 1LZ |
| 17 Apr 2026 | £275,000 | Terraced | Broadwell Court | NP18 1LH |
| 10 Apr 2026 | £283,500 | Semi-detached | Home Farm Close | NP18 3SH |
| 10 Apr 2026 | £300,000 | Semi-detached | Poplar Court | NP18 3EB |
Contains HM Land Registry data © Crown copyright and database right 2026, licensed under the Open Government Licence v3.0.
Who lives here? Monmouthshire demographics
Census 2021 figures for the wider Monmouthshire district (92,957 residents, 40,922 households):
| Age profile | |
|---|---|
| Under 15 | 15.8% |
| 15–29 | 18% |
| 30–44 | 16.9% |
| 45–64 | 23.4% |
| 65+ | 25.9% |
| Housing tenure | |
|---|---|
| Owner-occupied | 71.9% |
| Private rented | 13.7% |
| Social rented | 10.4% |
Source: ONS Census 2021 (district level — the finest openly licensed cut we republish). © Crown copyright, OGL v3.0.
Schools in and around NP18
| School | Phase | Ages | Pupils | Postcode |
|---|---|---|---|---|
| Langstone Primary School | Not applicable | — | — | NP18 2JU |
| Llanmartin Primary School | Not applicable | — | — | NP18 2HB |
| Ysgol Gymraeg Casnewydd | Not applicable | — | — | NP18 2LN |
| Llanwern High School | Not applicable | — | — | NP18 2YE |
| Caerleon Comprehensive School | Not applicable | — | — | NP18 1NF |
| Ponthir Church in Wales School | Not applicable | — | — | NP18 1GD |
| Caerleon Lodge Hill Primary School | Not applicable | — | — | NP18 3BY |
| Charles Williams Church in Wales Primary School | Not applicable | — | — | NP18 1AZ |
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 NP18
114 rated food businesses operate in NP18. 86 hold the top rating of 5, 15 are rated 4, and 1 are rated 2 or below.
Among the 5-rated: 2010 Halfway House, Age Connects Torfaen, Aspens @ Caerleon Comprehensive School, Babes In The Wood Pre-School Playgroup, Barneys Cafe.
Source: Food Standards Agency, food hygiene ratings (FHRS) open data.
Energy performance (EPC) in NP18
From a sample of 191 Energy Performance Certificates across 11 NP18 postcodes, the most common rating is band D (average band D). 47% of sampled homes are rated C or better.
Band B
5%
Band C
42%
Band D
44%
Band E
7%
Band F
2%
Band G
1%
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 Monmouthshire
Landlines around NP18 typically use:
Had a call from an unknown number? Use our free UK phone number checker to see who called.
What's it like living in NP18?
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Moving to NP18? Sort your connectivity first
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Postcodes in NP18
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.