LL21 postcode district: Wales

LL21 is a postcode district in Wales, with 368 postcodes in use in 2 sectors. It is split between 3 councils: Denbighshire (276 postcodes), Conwy (80) and Gwynedd (12).

Postcodes in use
368
Sectors
2
Councils
3 councils
Places
None listed

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in LL21, by gigabit broadband

Map of every postcode in LL21, by gigabit broadband Of the 368 postcodes in LL21 that ONS places, 89 have no home or business that can get gigabit, 108 have some that can, 170 can all get it and 1 have no Ofcom figure. 2 groups of postcodes without gigabit are outlined: 19 postcodes without gigabit; 12 postcodes without gigabit. Places named: Y Bala. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 5 km. A494A525A4212 LL21 0AF: no Ofcom figureLL21 0AJ: gigabit for allLL21 0BG: gigabit for allLL21 0BY: gigabit for allLL21 0DJ: gigabit for allLL21 0EE: gigabit for allLL21 0EL: gigabit for allLL21 0ER: gigabit for allLL21 0ES: gigabit for allLL21 0HG: gigabit for allLL21 0HN: gigabit for allLL21 0HR: gigabit for allLL21 0HY: gigabit for allLL21 0LF: gigabit for allLL21 0LY: gigabit for allLL21 0NN: gigabit for allLL21 0NP: gigabit for allLL21 0NU: gigabit for allLL21 0NW: gigabit for allLL21 0NY: gigabit for allLL21 0PA: gigabit for allLL21 0PB: gigabit for allLL21 0PN: gigabit for allLL21 0PP: gigabit for allLL21 0PR: gigabit for allLL21 0PU: gigabit for allLL21 0RB: gigabit for allLL21 0RF: gigabit for allLL21 0RG: gigabit for allLL21 0RR: gigabit for allLL21 0RW: gigabit for allLL21 0RY: gigabit for allLL21 0SH: gigabit for allLL21 0SJ: gigabit for allLL21 0ST: gigabit for allLL21 0SU: gigabit for allLL21 9AA: gigabit for allLL21 9AD: gigabit for allLL21 9AT: gigabit for allLL21 9AU: gigabit for allLL21 9BD: gigabit for allLL21 9BE: gigabit for allLL21 9BG: gigabit for allLL21 9BL: gigabit for allLL21 9BN: gigabit for allLL21 9DF: gigabit for allLL21 9DG: gigabit for allLL21 9DN: gigabit for allLL21 9EB: gigabit for allLL21 9EF: gigabit for allLL21 9EG: gigabit for allLL21 9EJ: gigabit for allLL21 9EL: gigabit for allLL21 9EN: gigabit for allLL21 9ET: gigabit for allLL21 9EU: gigabit for allLL21 9HA: gigabit for allLL21 9HB: gigabit for allLL21 9HD: gigabit for allLL21 9HL: gigabit for allLL21 9HR: gigabit for allLL21 9HW: gigabit for allLL21 9NS: gigabit for allLL21 9NT: gigabit for allLL21 9NY: gigabit for allLL21 9PF: gigabit for allLL21 9PH: gigabit for allLL21 9RE: gigabit for allLL21 9RP: gigabit for allLL21 9RX: gigabit for allLL21 9SA: gigabit for allLL21 9SB: gigabit for allLL21 9SE: gigabit for allLL21 9SF: gigabit for allLL21 9SU: gigabit for allLL21 9TW: gigabit for allLL21 9UG: gigabit for allLL21 9YB: gigabit for allLL21 0DR: some gigabitLL21 0EH: some gigabitLL21 0EN: some gigabitLL21 0EP: some gigabitLL21 0ET: some gigabitLL21 0EU: some gigabitLL21 0EW: some gigabitLL21 0HA: some gigabitLL21 0HB: some gigabitLL21 0HD: some gigabitLL21 0HE: some gigabitLL21 0HF: some gigabitLL21 0HP: some gigabitLL21 0HW: some gigabitLL21 0LN: some gigabitLL21 0NA: some gigabitLL21 0NF: some gigabitLL21 0NL: some gigabitLL21 0NR: some gigabitLL21 0NS: some gigabitLL21 0NT: some gigabitLL21 0PD: some gigabitLL21 0PE: some gigabitLL21 0PF: some gigabitLL21 0PH: some gigabitLL21 0PT: some gigabitLL21 0PY: some gigabitLL21 0RA: some gigabitLL21 0RD: some gigabitLL21 0RH: some gigabitLL21 0RL: some gigabitLL21 0RN: some gigabitLL21 0RU: some gigabitLL21 0SA: some gigabitLL21 0SN: some gigabitLL21 0SP: some gigabitLL21 0SR: some gigabitLL21 0SW: some gigabitLL21 0SY: some gigabitLL21 0TA: some gigabitLL21 0TB: some gigabitLL21 0TD: some gigabitLL21 0TE: some gigabitLL21 9AB: some gigabitLL21 9AG: some gigabitLL21 9AN: some gigabitLL21 9AP: some gigabitLL21 9BH: some gigabitLL21 9BP: some gigabitLL21 9BT: some gigabitLL21 9BU: some gigabitLL21 9DD: some gigabitLL21 9DE: some gigabitLL21 9DU: some gigabitLL21 9EA: some gigabitLL21 9EE: some gigabitLL21 9EH: some gigabitLL21 9HH: some gigabitLL21 9HN: some gigabitLL21 9HP: some gigabitLL21 9HY: some gigabitLL21 9PA: some gigabitLL21 9PB: some gigabitLL21 9PD: some gigabitLL21 9PG: some gigabitLL21 9PL: some gigabitLL21 9PN: some gigabitLL21 9PS: some gigabitLL21 9PW: some gigabitLL21 9PY: some gigabitLL21 9RA: some gigabitLL21 9RB: some gigabitLL21 9RD: some gigabitLL21 9RG: some gigabitLL21 9RT: some gigabitLL21 9RW: some gigabitLL21 9RY: some gigabitLL21 9SD: some gigabitLL21 9SH: some gigabitLL21 9SN: some gigabitLL21 9SP: some gigabitLL21 9SY: some gigabitLL21 9TE: some gigabitLL21 9TU: some gigabitLL21 9UB: some gigabitLL21 9UH: some gigabitLL21 9UL: some gigabitLL21 9UN: some gigabitLL21 0LA: some gigabitLL21 0LW: some gigabitLL21 0TH: some gigabitLL21 9AL: some gigabitLL21 9HG: some gigabitLL21 9HT: some gigabitLL21 9SG: some gigabitLL21 9TS: some gigabitLL21 0AA: no gigabitLL21 0BL: no gigabitLL21 0NB: no gigabitLL21 0ND: no gigabitLL21 0NE: no gigabitLL21 0PG: no gigabitLL21 0PS: no gigabitLL21 0RE: no gigabitLL21 0RS: no gigabitLL21 0SB: no gigabitLL21 0SD: no gigabitLL21 0SE: no gigabitLL21 0SF: no gigabitLL21 0SG: no gigabitLL21 0UD: no gigabitLL21 9AJ: no gigabitLL21 9BS: no gigabitLL21 9BW: no gigabitLL21 9BY: no gigabitLL21 9DA: no gigabitLL21 9DB: no gigabitLL21 9DY: no gigabitLL21 9ED: no gigabitLL21 9HU: no gigabitLL21 9LA: no gigabitLL21 9LB: no gigabitLL21 9LD: no gigabitLL21 9LE: no gigabitLL21 9LF: no gigabitLL21 9LG: no gigabitLL21 9LP: no gigabitLL21 9LU: no gigabitLL21 9LW: no gigabitLL21 9LY: no gigabitLL21 9NA: no gigabitLL21 9NB: no gigabitLL21 9ND: no gigabitLL21 9NE: no gigabitLL21 9NF: no gigabitLL21 9NG: no gigabitLL21 9NH: no gigabitLL21 9NL: no gigabitLL21 9NN: no gigabitLL21 9NP: no gigabitLL21 9NW: no gigabitLL21 9PE: no gigabitLL21 9PP: no gigabitLL21 9PR: no gigabitLL21 9PT: no gigabitLL21 9PU: no gigabitLL21 9QX: no gigabitLL21 9RF: no gigabitLL21 9RH: no gigabitLL21 9RN: no gigabitLL21 9RR: no gigabitLL21 9SL: no gigabitLL21 9TA: no gigabitLL21 9TB: no gigabitLL21 9TD: no gigabitLL21 9TT: no gigabitLL21 9UF: no gigabitLL21 9UP: no gigabitLL21 9US: no gigabitLL21 9UW: no gigabitLL21 0AE: no gigabitLL21 0DF: no gigabitLL21 9SS: no gigabitLL21 9LN: no gigabit Y Bala 19 postcodes without gigabit, outlined: this goes to LL21 0AL, the one nearest the middle of them19 postcodes without gigabit12 postcodes without gigabit, outlined: this goes to LL21 9LH, the one nearest the middle of them12 postcodes without gigabit Map of every postcode in LL21, by gigabit broadband Of the 368 postcodes in LL21 that ONS places, 89 have no home or business that can get gigabit, 108 have some that can, 170 can all get it and 1 have no Ofcom figure. 2 groups of postcodes without gigabit are outlined: 19 postcodes without gigabit; 12 postcodes without gigabit. Places named: Y Bala. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 5 km. A494A525A4212 Y Bala 12 postcodes without gigabit, outlined: this goes to LL21 9LH, the one nearest the middle of them12 postcodes without gigabit
  • No home or business can get gigabit: 89
  • Some can get gigabit: 108
  • Every home and business can get gigabit: 170
  • Ofcom gives no figure: 1
  • Outline: where 5 or more postcodes without gigabit lie together

Of the 368 postcodes in LL21 that ONS places, 89 have no home or business that can get gigabit, 108 have some that can, 170 can all get it and 1 have no Ofcom figure.

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. A dashed outline shows where 5 or more lie within 300 metres of each other. It is not a boundary, and no boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.

The middle of its postcodes: latitude 52.9900, longitude -3.4110. Open this area on OpenStreetMap

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; gigabit: Ofcom, Connected Nations, Spring 2026; 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

Postcodes without gigabit

89 postcodes here have no gigabit. These are the 12 first in postcode order.

LL21 0AALL21 0ABLL21 0AELL21 0AGLL21 0AHLL21 0ALLL21 0ANLL21 0APLL21 0ARLL21 0ASLL21 0ATLL21 0AU

Where the postcodes without gigabit lie together

  • 19 postcodes without gigabit, outlined on the map. LL21 0AL, is the one nearest the middle of them.
  • 12 postcodes without gigabit, outlined on the map. LL21 9LH, is the one nearest the middle of them.

What broadband can you get in LL21?

Ofcom reports on 367 of the 368 postcodes in LL21. At 170 of them every home and business can get gigabit broadband, and at 34 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit170 of 367
Postcodes where every home can get superfast248 of 367
Postcodes where some cannot get decent broadband34 of 367

Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.

Check one address on Ofcom's checker

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

What do homes sell for in LL21?

Homes in LL21 sold for a typical £190,000 in the 12 months to August 2026, across 53 sales, down 24% on the 12 months before, HM Land Registry's figures show.

£190,000 typical price, the 12 months to August 2026
12 months to August 2025
£250,000
12 months to August 2026
£190,000

▼ down 24% on the 12 months before

Detached£292,500 32 sales
Semi-detached£155,000 7 sales
Terraced£155,000 14 sales

Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.

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 LL21

Pick a sector, then a postcode. A sector is the district plus the next digit.

LL21 0171 postcodesLL21 9197 postcodes
UK postcode format explained

Places in LL21

We list no town or village for LL21. A place gets a page here only when enough postcodes are in one: a town or village here is a built-up area named by the Office for National Statistics in England and Wales, or a census locality named by National Records of Scotland. Every LL21 postcode is here, under its sector above.

Who covers LL21

How many of the district's postcodes in use fall under each council, constituency and police force area.

Councils

What council am I in?

Constituencies

  • Dwyfor Meirionnydd209
  • Bangor Aberconwy108
  • Clwyd East51

Police force areas

  • North Wales368

Next to LL21

LL20 postcode district LL22 postcode district All LL districts

"Next to" is by number: the districts before and after LL21 in the LL area.

Check a postcode

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