LL66

UK postcode district

Updated September 2026

District overview

Postcode units
23
Current units
22
Coordinate coverage
100%
Electoral wards
2

Coverage context

Countries represented
Wales
English regions represented
W99999999
Local authority codes
1
Terminated postcode units
1

Postcode sectors in LL66

Choose a sector to browse its complete postcode-unit directory.

2 sectors
89 recorded sales at this postcode
Address Date Price
Bryn Seion, 1, Rhosgoch, LL66 0AE 20 March 2025 £72,000
Gorffwysfa, Rhosgoch, LL66 0AB 11 October 2024 £260,000
Glasgraig Isaf, Rhosgoch, LL66 9AB 20 August 2024 £675,000

Census 2021

Population and age profile

LL66 usual residents
256
Age-profile population
Not available

Small counts are adjusted for privacy, so totals can differ slightly between Census tables.

Census Day: 21 March 2021. Sources: ONS/Nomis P001-P004 and ONS CT21_0228. Age table version 2024-04-08.

Fixed broadband coverage

The median Ofcom availability percentage across 22 current postcode units in this district. Each postcode is weighted equally, not by premises.

Superfast, 30 Mbit/s+
94.8%
Ultrafast, 100 Mbit/s+
94.8%
Ultrafast, 300 Mbit/s+
94.8%
Gigabit-capable
94.8%
Unable to receive decent fixed or FWA broadband
0%
Next Generation Access
100%
Decent broadband available from fixed wireless
0%

11 postcode units had 100% superfast coverage, 11 had 100% gigabit-capable coverage, and 5 had at least some premises without decent fixed or fixed-wireless access.

Predicted coverage, not measured speeds. Check availability for your address with a provider. Postcode-level full-fibre figures are not published in this release.

Source: Ofcom Connected Nations Spring 2026, version 2026-01-v2. Contains Ofcom data licensed under the Open Government Licence v3.0.

Evidence in context

Property market

The five-year median is £300,000 from 15 recorded sales in LL66. This is a recorded-sale statistic, not a current valuation.

The latest UK House Price Index average for Isle of Anglesey is £239,726 in June 2026, up 6.7% year on year.