SY18 postcode area guide — Powys
House prices, crime, broadband speeds, mobile signal, schools and demographics for the SY18 postcode district in Powys — every official dataset on one page.
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Where is SY18?
Broadband & internet speeds in SY18
Strong coverage
Superfast (30Mb+)
69.1%
Ultrafast (300Mb+)
53.6%
Gigabit-capable
53.6%
Below USO (10Mb)
7.5%
Broadband availability in the SY18 postcode district (Powys) is Strong — superfast is near-universal and gigabit is rolling out. Across the 220 postcodes Ofcom measures in SY18, superfast broadband (30 Mbit/s or faster) reaches 69.1% of premises and gigabit-capable lines are available to 53.6%.
Around 7.5% of premises in SY18 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 SY18
| Postcode | Superfast | Gigabit |
|---|---|---|
| SY18 6AA | 63.2% | 10.5% |
| SY18 6AB | 100% | 24.3% |
| SY18 6AD | 100% | 25.5% |
| SY18 6AE | 100% | 80% |
| SY18 6AF | 100% | 100% |
| SY18 6AG | 100% | 80% |
| SY18 6AH | 100% | 100% |
| SY18 6AJ | 95.8% | 95.8% |
| SY18 6AL | 100% | 100% |
| SY18 6AN | 40% | 40% |
Run a speed test to see what you're actually getting, or check your exact postcode.
Mobile signal around Powys
Ofcom's coverage model for the wider Powys district (71,508 premises):
4G indoors — all networks
75.4%
4G outdoors — all networks
92.7%
5G outdoors — all networks
—
Voice indoors — all networks
79.7%
Signal varies street by street — use the mobile coverage checker to compare EE, O2, Three and Vodafone at an exact postcode.
Crime in SY18
Police recorded 8 incidents within about a mile of the centre of SY18 in May 2026 (latest published street-level data). The breakdown:
| Category | Incidents | Share |
|---|---|---|
| Violence & sexual offences | 5 | 62.5% |
| Anti-social behaviour | 2 | 25.0% |
| Public order | 1 | 12.5% |
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 SY18
Based on 37 sales registered with HM Land Registry in the last 12 months, the median sold price in SY18 is £200,000, down 11.1% on the previous year (£225,000).
Detached
£360,000
15 sales
Semi-detached
£200,000
9 sales
Terraced
£130,000
8 sales
Latest recorded sales in SY18
| Date | Price | Type | Street | Postcode |
|---|---|---|---|---|
| 11 May 2026 | £360,000 | Detached | Van Road | SY18 6HR |
| 8 May 2026 | £189,500 | Semi-detached | Caegwyn | SY18 6DR |
| 5 May 2026 | £129,950 | Flat | Caegwyn | SY18 6DU |
| 1 May 2026 | £250,000 | Semi-detached | SY18 6HY | |
| 10 Apr 2026 | £172,000 | Terraced | Hafren Terrace | SY18 6AT |
| 1 Apr 2026 | £360,000 | Detached | SY18 6NH | |
| 23 Mar 2026 | £262,500 | Semi-detached | Hafren Close | SY18 6FD |
| 20 Mar 2026 | £127,500 | Terraced | Pen Y Graig | SY18 6AL |
| 20 Mar 2026 | £110,000 | Terraced | Idloes Terrace | SY18 6AZ |
| 30 Jan 2026 | £200,000 | Semi-detached | Garden Suburb | SY18 6EU |
Contains HM Land Registry data © Crown copyright and database right 2026, licensed under the Open Government Licence v3.0.
Who lives here? Powys demographics
Census 2021 figures for the wider Powys district (133,170 residents, 60,182 households):
| Age profile | |
|---|---|
| Under 15 | 15.5% |
| 15–29 | 18% |
| 30–44 | 15.5% |
| 45–64 | 23.1% |
| 65+ | 27.9% |
| Housing tenure | |
|---|---|
| Owner-occupied | 67.6% |
| Private rented | 18.1% |
| Social rented | 5.3% |
Source: ONS Census 2021 (district level — the finest openly licensed cut we republish). © Crown copyright, OGL v3.0.
Schools in and around SY18
| School | Phase | Ages | Pupils | Postcode |
|---|---|---|---|---|
| Llanidloes C.P. School | Not applicable | — | — | SY18 6EX |
| Llanidloes High School | Not applicable | — | — | SY18 6EX |
| Ysgol Dyffryn Trannon | Not applicable | — | — | SY17 5PH |
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 SY18
83 rated food businesses operate in SY18. 41 hold the top rating of 5, 20 are rated 4, and 6 are rated 2 or below.
Among the 5-rated: Alison Hobbs Market Stall, Andys Bread, Bodlondeb Extra Care, Co-operative Stores, Cobblers Tearoom.
Source: Food Standards Agency, food hygiene ratings (FHRS) open data.
Energy performance (EPC) in SY18
From a sample of 116 Energy Performance Certificates across 10 SY18 postcodes, the most common rating is band D (average band D). 34% of sampled homes are rated C or better.
Band A
2%
Band C
33%
Band D
36%
Band E
18%
Band F
5%
Band G
6%
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 Powys
Landlines around SY18 typically use:
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What's it like living in SY18?
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Moving to SY18? Sort your connectivity first
We arrange broadband, full-fibre, leased lines, VoIP and business mobiles across Powys — free, no-obligation quote.
Postcodes in SY18
Neighbouring districts
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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.