LL55 1 postcode sector in the LL55 district

LL55 1 is a sector of the LL55 district: every postcode that starts LL55 1. It has 175 postcodes in use, 9 of them large-user postcodes. A large-user postcode is one Royal Mail gives to a single address that gets a lot of mail.

Not sure what a sector is? UK postcode format explained.

Every postcode in the LL55 1 sector, and which are new since 2020

Map of every postcode in the LL55 1 sector, by new since 2020 Of the 175 postcodes in the LL55 1 sector that ONS places, 6 are new since 2020 and 169 were in use before 2020. Places named: Caernarfon, Llanrug. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A487A4871 LL55 1AB: before 2020LL55 1AG: before 2020LL55 1AJ: before 2020LL55 1AN: before 2020LL55 1AQ: before 2020LL55 1AR: before 2020LL55 1AS: before 2020LL55 1AT: before 2020LL55 1AX: before 2020LL55 1AY: before 2020LL55 1AZ: before 2020LL55 1BA: before 2020LL55 1BB: before 2020LL55 1BE: before 2020LL55 1BF: before 2020LL55 1BG: before 2020LL55 1BH: before 2020LL55 1BJ: before 2020LL55 1BL: before 2020LL55 1BP: before 2020LL55 1BQ: before 2020LL55 1BS: before 2020LL55 1BT: before 2020LL55 1BU: before 2020LL55 1BW: before 2020LL55 1BX: before 2020LL55 1BY: before 2020LL55 1DA: before 2020LL55 1DB: before 2020LL55 1DD: before 2020LL55 1DE: before 2020LL55 1DF: before 2020LL55 1DG: before 2020LL55 1DH: before 2020LL55 1DJ: before 2020LL55 1DL: before 2020LL55 1DN: before 2020LL55 1DP: before 2020LL55 1DR: before 2020LL55 1DS: before 2020LL55 1DT: before 2020LL55 1DU: before 2020LL55 1DW: before 2020LL55 1DY: before 2020LL55 1EA: before 2020LL55 1EB: before 2020LL55 1ED: before 2020LL55 1EF: before 2020LL55 1EG: before 2020LL55 1EL: before 2020LL55 1EN: before 2020LL55 1EP: before 2020LL55 1ET: before 2020LL55 1EU: before 2020LL55 1EY: before 2020LL55 1GA: before 2020LL55 1HA: before 2020LL55 1HD: before 2020LL55 1HE: before 2020LL55 1HF: before 2020LL55 1HG: before 2020LL55 1HH: before 2020LL55 1HJ: before 2020LL55 1HL: before 2020LL55 1HP: before 2020LL55 1HS: before 2020LL55 1HT: before 2020LL55 1HU: before 2020LL55 1HW: before 2020LL55 1HY: before 2020LL55 1LA: before 2020LL55 1LE: before 2020LL55 1LF: before 2020LL55 1LL: before 2020LL55 1LN: before 2020LL55 1LP: before 2020LL55 1LR: before 2020LL55 1LS: before 2020LL55 1LW: before 2020LL55 1NA: before 2020LL55 1NB: before 2020LL55 1ND: before 2020LL55 1NN: before 2020LL55 1NP: before 2020LL55 1NS: before 2020LL55 1NW: before 2020LL55 1PA: before 2020LL55 1PB: before 2020LL55 1PE: before 2020LL55 1PF: before 2020LL55 1PG: before 2020LL55 1PH: before 2020LL55 1PN: before 2020LL55 1PS: before 2020LL55 1PT: before 2020LL55 1PU: before 2020LL55 1RB: before 2020LL55 1RE: before 2020LL55 1RF: before 2020LL55 1RG: before 2020LL55 1RN: before 2020LL55 1RS: before 2020LL55 1RT: before 2020LL55 1RU: before 2020LL55 1SE: before 2020LL55 1SG: before 2020LL55 1SH: before 2020LL55 1SN: before 2020LL55 1SP: before 2020LL55 1SQ: before 2020LL55 1SR: before 2020LL55 1SS: before 2020LL55 1ST: before 2020LL55 1SW: before 2020LL55 1SY: before 2020LL55 1TA: before 2020LL55 1TB: before 2020LL55 1TD: before 2020LL55 1TH: before 2020LL55 1TP: before 2020LL55 1TS: before 2020LL55 1TT: before 2020LL55 1TU: before 2020LL55 1TY: before 2020LL55 1UA: before 2020LL55 1UB: before 2020LL55 1UD: before 2020LL55 1UE: before 2020LL55 1UH: before 2020LL55 1UL: before 2020LL55 1UN: before 2020LL55 1UP: before 2020LL55 1UR: before 2020LL55 1UT: before 2020LL55 1UU: before 2020LL55 1UW: before 2020LL55 1UY: before 2020LL55 1WA: before 2020LL55 1YA: before 2020LL55 1YB: before 2020LL55 1YD: before 2020LL55 1YE: before 2020LL55 1YH: before 2020LL55 1YL: before 2020LL55 1YN: before 2020LL55 1YP: before 2020LL55 1YS: before 2020LL55 1YT: before 2020LL55 1YU: before 2020LL55 1YY: before 2020LL55 1BZ: new since 2020LL55 1DQ: new since 2020LL55 1DX: new since 2020LL55 1DZ: new since 2020LL55 1TW: new since 2020LL55 1EQ: new since 2020 CaernarfonLlanrug Map of every postcode in the LL55 1 sector, by new since 2020 Of the 175 postcodes in the LL55 1 sector that ONS places, 6 are new since 2020 and 169 were in use before 2020. Places named: Caernarfon, Llanrug. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A487 CaernarfonLlanrug
  • New since 2020: 6
  • In use before 2020: 169

Of the 175 postcodes in the LL55 1 sector that ONS places, 6 are new since 2020 and 169 were in use before 2020.

Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. New since 2020 means it came into use in January 2020 or later. No boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; when each came into use: the same directory; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them

The 5 newest postcodes

LL55 1DZDecember 2025LL55 1EQOctober 2025LL55 1BZAugust 2024LL55 1DQNovember 2023LL55 1DXOctober 2023

What do homes sell for in LL55 1?

Homes in LL55 1 sold for a typical £197,475 in the 12 months to August 2026, across 48 sales, up 6.7% on the 12 months before, HM Land Registry's figures show.

£197,475 typical price, the 12 months to August 2026
£185,000 12 months to August 2025
▲ up 6.7% on the 12 months before
  • Detached £285,000 9 sales
  • Semi-detached £212,500 22 sales
  • Terraced £155,000 16 sales
  • Flat or maisonette 1 sale, too few to price

Each bar is that kind's typical price, against the most expensive kind here.

Standard sales of homes at market value at the postcodes that start LL55 1. A typical price is the median, the middle sale, given from 5 sales or more.

How we work this out: house prices by postcode

Source: HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. How we use it

Postcodes in LL55 1

Pick a postcode to see its council and MP, broadband, flood risk, what homes sell for, council tax, the nearest schools and stations, and crime around it.

LL55 1ABLL55 1AFLL55 1AGLL55 1AJLL55 1ANLL55 1AQLL55 1ARLL55 1ASLL55 1ATLL55 1AXLL55 1AYLL55 1AZLL55 1BALL55 1BBLL55 1BDLL55 1BELL55 1BFLL55 1BGLL55 1BHLL55 1BJLL55 1BLLL55 1BPLL55 1BQLL55 1BSLL55 1BTLL55 1BULL55 1BWLL55 1BXLL55 1BYLL55 1BZLL55 1DALL55 1DBLL55 1DDLL55 1DELL55 1DFLL55 1DGLL55 1DHLL55 1DJLL55 1DLLL55 1DNLL55 1DPLL55 1DQLL55 1DRLL55 1DSLL55 1DTLL55 1DULL55 1DWLL55 1DXLL55 1DYLL55 1DZLL55 1EALL55 1EBLL55 1EDLL55 1EELL55 1EFLL55 1EGLL55 1EHLL55 1ELLL55 1ENLL55 1EPLL55 1EQLL55 1ETLL55 1EULL55 1EYLL55 1GALL55 1HALL55 1HBLL55 1HDLL55 1HELL55 1HFLL55 1HGLL55 1HHLL55 1HJLL55 1HLLL55 1HPLL55 1HSLL55 1HTLL55 1HULL55 1HWLL55 1HYLL55 1LALL55 1LELL55 1LFLL55 1LLLL55 1LNLL55 1LPLL55 1LRLL55 1LSLL55 1LWLL55 1NALL55 1NBLL55 1NDLL55 1NELL55 1NNLL55 1NPLL55 1NSLL55 1NWLL55 1PALL55 1PBLL55 1PELL55 1PFLL55 1PGLL55 1PHLL55 1PLLL55 1PNLL55 1PPLL55 1PRLL55 1PSLL55 1PTLL55 1PULL55 1PWLL55 1RBLL55 1RELL55 1RFLL55 1RGLL55 1RHLL55 1RNLL55 1RRLL55 1RSLL55 1RTLL55 1RULL55 1RWLL55 1SALL55 1SELL55 1SGLL55 1SHLL55 1SNLL55 1SPLL55 1SQLL55 1SRLL55 1SSLL55 1STLL55 1SULL55 1SWLL55 1SYLL55 1TALL55 1TBLL55 1TDLL55 1THLL55 1TPLL55 1TSLL55 1TTLL55 1TULL55 1TWLL55 1TYLL55 1UALL55 1UBLL55 1UDLL55 1UELL55 1UHLL55 1ULLL55 1UNLL55 1UPLL55 1URLL55 1UTLL55 1UULL55 1UWLL55 1UYLL55 1WALL55 1YALL55 1YBLL55 1YDLL55 1YELL55 1YFLL55 1YGLL55 1YHLL55 1YLLL55 1YNLL55 1YPLL55 1YSLL55 1YTLL55 1YULL55 1YWLL55 1YYLL55 1ZH

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed. See all our data sources

What council am I in? The council, borough or local authority for a postcode, and the county council where there is one. What ward am I in? The ward for a postcode, with its council, constituency and parish.

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