2,641
Households
White Brit. · 96%
Ethnicity
Christian · 53%
Religion
Around average
Avg IMD
£315,833
Median property price
270
Postcodes
Sold prices in Seiriol
England & WalesProperty sales · Seiriol
HM Land Registry · Seiriol
Average price
£325,718
YoY: -2.6%
Median price: £312,916
Property type filter
Recent sale price trend
Jul '24 – Jun '26Jun '26: 4 sales · avg £279,000
X axis: MonthY axis: Avg sold price (hover shows sales count)
£499k£363k£227k
Jul '24Jan '25Jul '25Jan '26Jun '26
Contains HM Land Registry data © Crown copyright and database right. This data is licensed under the Open Government Licence v3.0.
School applications
We've matched this area to Isle of Anglesey.
You apply through this education local authority even if the school is in another council area.
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Amenities in Seiriol
GPs make up most of the mapped places
23 GPs · 10 Museums · 7 Libraries · 42 in all
- GPs23
- Museums10
- Libraries7
- Hospitals2
OpenStreetMap · selected tags only · council totals; wards use the parent figure
Overview of Seiriol
Coordinates53.2719, -4.1136
Postcodes
270
Population (Census)
7,768
Households (Census)
2,641
Demographics in Seiriol
Ethnicity
White Brit.95.6%
Other White1.9%
+ other · 2.4%
Religion
Christian52.6%
No religion39.4%
Not answered6.5%
+ other · 1.5%
Age groups
75–8473.1%
16–198.3%
35–494.5%
25–343.4%
50–642.9%
+ 3 other age groups · 7.8%
Households
Any member 66+19.2%
All members 66+16.7%
Other13.9%
Married or civil partnership couple: No children13.0%
Married or civil partnership couple: Dependent children9.8%
+ 7 other households · 27.5%
Area Deprivation (Average IMD) for Seiriol
Area IMD profile
This area-level value is averaged from postcode IMD deciles within the area boundary.
Around average
Mean decile 5.97 (1 = most deprived, 10 = least)
1 - Most deprived10 - Least deprived
Overall this area reads as Around average on relative deprivation, with a mean IMD decile of 5.97 (average of postcode-level deciles in this boundary).
Postcode Districts in Seiriol
Postcodes in Seiriol
LL58 8AALL58 8ABLL58 8ADLL58 8AELL58 8AFLL58 8AJLL58 8ALLL58 8APLL58 8AQLL58 8ATLL58 8AULL58 8AWLL58 8AXLL58 8AZLL58 8BALL58 8BBLL58 8BDLL58 8BELL58 8BGLL58 8BHLL58 8BLLL58 8BNLL58 8BPLL58 8BQLL58 8BSLL58 8BTLL58 8BULL58 8BWLL58 8BYLL58 8DALL58 8DBLL58 8DLLL58 8DNLL58 8DPLL58 8DSLL58 8DTLL58 8DULL58 8DYLL58 8EALL58 8EBLL58 8EDLL58 8EELL58 8EFLL58 8EGLL58 8EHLL58 8EJLL58 8ELLL58 8ENLL58 8EPLL58 8ERLL58 8ESLL58 8ETLL58 8EULL58 8EWLL58 8EYLL58 8HALL58 8HBLL58 8HDLL58 8HELL58 8HFLL58 8HGLL58 8HHLL58 8HLLL58 8HNLL58 8HPLL58 8HRLL58 8HULL58 8HWLL58 8LBLL58 8LDLL58 8LELL58 8LFLL58 8LGLL58 8LHLL58 8LLLL58 8LNLL58 8LPLL58 8LRLL58 8LSLL58 8LTLL58 8LULL58 8LWLL58 8LXLL58 8LYLL58 8NALL58 8NBLL58 8NDLL58 8NELL58 8NFLL58 8NGLL58 8NHLL58 8NLLL58 8NNLL58 8NPLL58 8NRLL58 8NSLL58 8NTLL58 8NULL58 8NWLL58 8NYLL58 8PALL58 8PBLL58 8PDLL58 8PELL58 8PFLL58 8PGLL58 8PHLL58 8PLLL58 8PNLL58 8PPLL58 8PRLL58 8PSLL58 8PTLL58 8PWLL58 8RALL58 8RBLL58 8RDLL58 8RELL58 8RFLL58 8RG