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LL23

Postcode district

199 live postcodes, all in Gwynedd.

A postcode has no figures of its own: each layer is published for whole councils, neighbourhoods or exact points. The figures below are for the whole of Gwynedd. Open the map at LL23 for neighbourhoods and points. Open the map at LL23

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Deprivation by neighbourhood

Welsh Index of Multiple Deprivation 2025

Most deprived 10%Least

3 of Gwynedd’s 71 neighbourhoods are in Wales’s most deprived 20%.

Gwynedd, the council that holds 100% of LL23

Average house price
£204,974
Up 5.5% in a year
HM Land Registry · Jul 2026
Median full-time pay
£32,868
17th lowest of 348
ONS earnings survey · 2025
House price to pay
6.2×
106th most affordable of 348
Worked out by Open Index
Population
117,393
119th lowest of 361
ONS Census 2021 · 2021

Everything about Gwynedd

Sectors in LL23