AL8 postcode district: Welwyn Garden City and around, Hertfordshire

AL8 is a postcode district in Hertfordshire, with 422 postcodes in use in 2 sectors. It has postcodes in Welwyn Garden City. Its council is Welwyn Hatfield.

Postcodes in use
422
Sectors
2
Council
Welwyn Hatfield
Places
Welwyn Garden City

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

Every postcode in AL8, by flood risk

Map of every postcode in AL8, by flood risk Of the 422 postcodes in AL8 that ONS places, 3 have a home or business at high risk, 1 are at low risk at worst, 1 are at very low risk only and 417 are not on the Environment Agency's at-risk list. Places named: Welwyn Garden City. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A1(M)A1000 AL8 6AB: not on the flood risk listAL8 6AE: not on the flood risk listAL8 6AH: not on the flood risk listAL8 6AJ: not on the flood risk listAL8 6AL: not on the flood risk listAL8 6AN: not on the flood risk listAL8 6AP: not on the flood risk listAL8 6BB: not on the flood risk listAL8 6BE: not on the flood risk listAL8 6BH: not on the flood risk listAL8 6BJ: not on the flood risk listAL8 6BL: not on the flood risk listAL8 6BP: not on the flood risk listAL8 6BQ: not on the flood risk listAL8 6BX: not on the flood risk listAL8 6DB: not on the flood risk listAL8 6DD: not on the flood risk listAL8 6DE: not on the flood risk listAL8 6DG: not on the flood risk listAL8 6DH: not on the flood risk listAL8 6DJ: not on the flood risk listAL8 6DL: not on the flood risk listAL8 6DN: not on the flood risk listAL8 6DS: not on the flood risk listAL8 6DU: not on the flood risk listAL8 6DX: not on the flood risk listAL8 6EA: not on the flood risk listAL8 6EB: not on the flood risk listAL8 6ED: not on the flood risk listAL8 6EE: not on the flood risk listAL8 6EF: not on the flood risk listAL8 6EG: not on the flood risk listAL8 6EH: not on the flood risk listAL8 6EJ: not on the flood risk listAL8 6EL: not on the flood risk listAL8 6EN: not on the flood risk listAL8 6EP: not on the flood risk listAL8 6EQ: not on the flood risk listAL8 6ET: not on the flood risk listAL8 6EU: not on the flood risk listAL8 6EX: not on the flood risk listAL8 6EY: not on the flood risk listAL8 6HA: not on the flood risk listAL8 6HF: not on the flood risk listAL8 6HG: not on the flood risk listAL8 6HH: not on the flood risk listAL8 6HJ: not on the flood risk listAL8 6HL: not on the flood risk listAL8 6HN: not on the flood risk listAL8 6HP: not on the flood risk listAL8 6HQ: not on the flood risk listAL8 6HR: not on the flood risk listAL8 6HS: not on the flood risk listAL8 6HT: not on the flood risk listAL8 6HU: not on the flood risk listAL8 6HW: not on the flood risk listAL8 6HX: not on the flood risk listAL8 6HY: not on the flood risk listAL8 6HZ: not on the flood risk listAL8 6JA: not on the flood risk listAL8 6JB: not on the flood risk listAL8 6JD: not on the flood risk listAL8 6JF: not on the flood risk listAL8 6JG: not on the flood risk listAL8 6JL: not on the flood risk listAL8 6JQ: not on the flood risk listAL8 6JR: not on the flood risk listAL8 6JS: not on the flood risk listAL8 6JT: not on the flood risk listAL8 6JU: not on the flood risk listAL8 6JW: not on the flood risk listAL8 6JX: not on the flood risk listAL8 6JY: not on the flood risk listAL8 6JZ: not on the flood risk listAL8 6LA: not on the flood risk listAL8 6LB: not on the flood risk listAL8 6LD: not on the flood risk listAL8 6LE: not on the flood risk listAL8 6LG: not on the flood risk listAL8 6LH: not on the flood risk listAL8 6LJ: not on the flood risk listAL8 6LL: not on the flood risk listAL8 6LN: not on the flood risk listAL8 6LP: not on the flood risk listAL8 6LQ: not on the flood risk listAL8 6LW: not on the flood risk listAL8 6NA: not on the flood risk listAL8 6ND: not on the flood risk listAL8 6NE: not on the flood risk listAL8 6NS: not on the flood risk listAL8 6NT: not on the flood risk listAL8 6NU: not on the flood risk listAL8 6NY: not on the flood risk listAL8 6PA: not on the flood risk listAL8 6PD: not on the flood risk listAL8 6PG: not on the flood risk listAL8 6PR: not on the flood risk listAL8 6PS: not on the flood risk listAL8 6PZ: not on the flood risk listAL8 6QA: not on the flood risk listAL8 6QJ: not on the flood risk listAL8 6QL: not on the flood risk listAL8 6QN: not on the flood risk listAL8 6QR: not on the flood risk listAL8 6QS: not on the flood risk listAL8 6QT: not on the flood risk listAL8 6QU: not on the flood risk listAL8 6QW: not on the flood risk listAL8 6QX: not on the flood risk listAL8 6QY: not on the flood risk listAL8 6QZ: not on the flood risk listAL8 6RA: not on the flood risk listAL8 6RB: not on the flood risk listAL8 6RE: not on the flood risk listAL8 6RF: not on the flood risk listAL8 6RG: not on the flood risk listAL8 6RH: not on the flood risk listAL8 6RJ: not on the flood risk listAL8 6RP: not on the flood risk listAL8 6RQ: not on the flood risk listAL8 6RR: not on the flood risk listAL8 6RS: not on the flood risk listAL8 6RT: not on the flood risk listAL8 6RU: not on the flood risk listAL8 6RX: not on the flood risk listAL8 6RY: not on the flood risk listAL8 6SA: not on the flood risk listAL8 6SE: not on the flood risk listAL8 6SF: not on the flood risk listAL8 6SG: not on the flood risk listAL8 6SH: not on the flood risk listAL8 6SJ: not on the flood risk listAL8 6SL: not on the flood risk listAL8 6SN: not on the flood risk listAL8 6SP: not on the flood risk listAL8 6SQ: not on the flood risk listAL8 6SR: not on the flood risk listAL8 6SS: not on the flood risk listAL8 6ST: not on the flood risk listAL8 6SU: not on the flood risk listAL8 6SW: not on the flood risk listAL8 6SY: not on the flood risk listAL8 6SZ: not on the flood risk listAL8 6TA: not on the flood risk listAL8 6TB: not on the flood risk listAL8 6TD: not on the flood risk listAL8 6TE: not on the flood risk listAL8 6TF: not on the flood risk listAL8 6TG: not on the flood risk listAL8 6TL: not on the flood risk listAL8 6TN: not on the flood risk listAL8 6TP: not on the flood risk listAL8 6TR: not on the flood risk listAL8 6UG: not on the flood risk listAL8 6UH: not on the flood risk listAL8 6UJ: not on the flood risk listAL8 6UL: not on the flood risk listAL8 6UN: not on the flood risk listAL8 6UR: not on the flood risk listAL8 6UX: not on the flood risk listAL8 6UZ: not on the flood risk listAL8 6WW: not on the flood risk listAL8 6WX: not on the flood risk listAL8 6XA: not on the flood risk listAL8 6XB: not on the flood risk listAL8 6XD: not on the flood risk listAL8 6XE: not on the flood risk listAL8 6XG: not on the flood risk listAL8 6XH: not on the flood risk listAL8 6XJ: not on the flood risk listAL8 6XL: not on the flood risk listAL8 6XN: not on the flood risk listAL8 6XP: not on the flood risk listAL8 6XQ: not on the flood risk listAL8 6XR: not on the flood risk listAL8 6XS: not on the flood risk listAL8 6XT: not on the flood risk listAL8 6XU: not on the flood risk listAL8 6XW: not on the flood risk listAL8 6XX: not on the flood risk listAL8 6XY: not on the flood risk listAL8 6XZ: not on the flood risk listAL8 6YA: not on the flood risk listAL8 6YB: not on the flood risk listAL8 6YD: not on the flood risk listAL8 6YE: not on the flood risk listAL8 6YF: not on the flood risk listAL8 6YH: not on the flood risk listAL8 6YJ: not on the flood risk listAL8 6YL: not on the flood risk listAL8 6YN: not on the flood risk listAL8 6YP: not on the flood risk listAL8 6YQ: not on the flood risk listAL8 6YR: not on the flood risk listAL8 6YS: not on the flood risk listAL8 6YT: not on the flood risk listAL8 6YU: not on the flood risk listAL8 6YX: not on the flood risk listAL8 7AA: not on the flood risk listAL8 7AB: not on the flood risk listAL8 7AD: not on the flood risk listAL8 7AE: not on the flood risk listAL8 7AF: not on the flood risk listAL8 7AG: not on the flood risk listAL8 7AH: not on the flood risk listAL8 7AJ: not on the flood risk listAL8 7AL: not on the flood risk listAL8 7AN: not on the flood risk listAL8 7AP: not on the flood risk listAL8 7AQ: not on the flood risk listAL8 7AT: not on the flood risk listAL8 7AW: not on the flood risk listAL8 7AX: not on the flood risk listAL8 7AY: not on the flood risk listAL8 7AZ: not on the flood risk listAL8 7BA: not on the flood risk listAL8 7BB: not on the flood risk listAL8 7BD: not on the flood risk listAL8 7BE: not on the flood risk listAL8 7BG: not on the flood risk listAL8 7BH: not on the flood risk listAL8 7BJ: not on the flood risk listAL8 7BL: not on the flood risk listAL8 7BN: not on the flood risk listAL8 7BP: not on the flood risk listAL8 7BQ: not on the flood risk listAL8 7BS: not on the flood risk listAL8 7BT: not on the flood risk listAL8 7BU: not on the flood risk listAL8 7BW: not on the flood risk listAL8 7DF: not on the flood risk listAL8 7DG: not on the flood risk listAL8 7DH: not on the flood risk listAL8 7DJ: not on the flood risk listAL8 7DL: not on the flood risk listAL8 7DN: not on the flood risk listAL8 7DP: not on the flood risk listAL8 7DQ: not on the flood risk listAL8 7DR: not on the flood risk listAL8 7DS: not on the flood risk listAL8 7DU: not on the flood risk listAL8 7DW: not on the flood risk listAL8 7DY: not on the flood risk listAL8 7DZ: not on the flood risk listAL8 7EA: not on the flood risk listAL8 7EB: not on the flood risk listAL8 7ED: not on the flood risk listAL8 7EE: not on the flood risk listAL8 7EF: not on the flood risk listAL8 7EG: not on the flood risk listAL8 7EH: not on the flood risk listAL8 7EJ: not on the flood risk listAL8 7EL: not on the flood risk listAL8 7EN: not on the flood risk listAL8 7EP: not on the flood risk listAL8 7EQ: not on the flood risk listAL8 7EW: not on the flood risk listAL8 7HA: not on the flood risk listAL8 7HB: not on the flood risk listAL8 7HD: not on the flood risk listAL8 7HE: not on the flood risk listAL8 7HF: not on the flood risk listAL8 7HG: not on the flood risk listAL8 7HH: not on the flood risk listAL8 7HJ: not on the flood risk listAL8 7HL: not on the flood risk listAL8 7HN: not on the flood risk listAL8 7HP: not on the flood risk listAL8 7HQ: not on the flood risk listAL8 7HR: not on the flood risk listAL8 7HS: not on the flood risk listAL8 7HT: not on the flood risk listAL8 7HU: not on the flood risk listAL8 7HW: not on the flood risk listAL8 7HX: not on the flood risk listAL8 7HY: not on the flood risk listAL8 7HZ: not on the flood risk listAL8 7JA: not on the flood risk listAL8 7JB: not on the flood risk listAL8 7JD: not on the flood risk listAL8 7JE: not on the flood risk listAL8 7JP: not on the flood risk listAL8 7JQ: not on the flood risk listAL8 7JS: not on the flood risk listAL8 7JT: not on the flood risk listAL8 7JU: not on the flood risk listAL8 7JW: not on the flood risk listAL8 7JX: not on the flood risk listAL8 7JY: not on the flood risk listAL8 7JZ: not on the flood risk listAL8 7LA: not on the flood risk listAL8 7LB: not on the flood risk listAL8 7LD: not on the flood risk listAL8 7LE: not on the flood risk listAL8 7LF: not on the flood risk listAL8 7LG: not on the flood risk listAL8 7LH: not on the flood risk listAL8 7LJ: not on the flood risk listAL8 7LU: not on the flood risk listAL8 7LW: not on the flood risk listAL8 7LX: not on the flood risk listAL8 7LY: not on the flood risk listAL8 7LZ: not on the flood risk listAL8 7NA: not on the flood risk listAL8 7NB: not on the flood risk listAL8 7ND: not on the flood risk listAL8 7NF: not on the flood risk listAL8 7NG: not on the flood risk listAL8 7NH: not on the flood risk listAL8 7NJ: not on the flood risk listAL8 7NL: not on the flood risk listAL8 7NN: not on the flood risk listAL8 7NQ: not on the flood risk listAL8 7NR: not on the flood risk listAL8 7NS: not on the flood risk listAL8 7NU: not on the flood risk listAL8 7NW: not on the flood risk listAL8 7NX: not on the flood risk listAL8 7PA: not on the flood risk listAL8 7PB: not on the flood risk listAL8 7PD: not on the flood risk listAL8 7PE: not on the flood risk listAL8 7PF: not on the flood risk listAL8 7PG: not on the flood risk listAL8 7PH: not on the flood risk listAL8 7PJ: not on the flood risk listAL8 7PL: not on the flood risk listAL8 7PN: not on the flood risk listAL8 7PP: not on the flood risk listAL8 7PQ: not on the flood risk listAL8 7PR: not on the flood risk listAL8 7PS: not on the flood risk listAL8 7PT: not on the flood risk listAL8 7PU: not on the flood risk listAL8 7PW: not on the flood risk listAL8 7PX: not on the flood risk listAL8 7PY: not on the flood risk listAL8 7PZ: not on the flood risk listAL8 7QA: not on the flood risk listAL8 7QB: not on the flood risk listAL8 7QG: not on the flood risk listAL8 7QH: not on the flood risk listAL8 7QJ: not on the flood risk listAL8 7QL: not on the flood risk listAL8 7QN: not on the flood risk listAL8 7QP: not on the flood risk listAL8 7QR: not on the flood risk listAL8 7QS: not on the flood risk listAL8 7QT: not on the flood risk listAL8 7QU: not on the flood risk listAL8 7QW: not on the flood risk listAL8 7QX: not on the flood risk listAL8 7QY: not on the flood risk listAL8 7QZ: not on the flood risk listAL8 7RA: not on the flood risk listAL8 7RB: not on the flood risk listAL8 7RD: not on the flood risk listAL8 7RE: not on the flood risk listAL8 7RF: not on the flood risk listAL8 7RG: not on the flood risk listAL8 7RH: not on the flood risk listAL8 7RJ: not on the flood risk listAL8 7RL: not on the flood risk listAL8 7RQ: not on the flood risk listAL8 7RT: not on the flood risk listAL8 7RU: not on the flood risk listAL8 7RX: not on the flood risk listAL8 7RY: not on the flood risk listAL8 7RZ: not on the flood risk listAL8 7SB: not on the flood risk listAL8 7SD: not on the flood risk listAL8 7SE: not on the flood risk listAL8 7SF: not on the flood risk listAL8 7SG: not on the flood risk listAL8 7SH: not on the flood risk listAL8 7SJ: not on the flood risk listAL8 7SL: not on the flood risk listAL8 7SN: not on the flood risk listAL8 7SQ: not on the flood risk listAL8 7SR: not on the flood risk listAL8 7ST: not on the flood risk listAL8 7SU: not on the flood risk listAL8 7TA: not on the flood risk listAL8 7TD: not on the flood risk listAL8 7TE: not on the flood risk listAL8 7TF: not on the flood risk listAL8 7TG: not on the flood risk listAL8 7TH: not on the flood risk listAL8 7TJ: not on the flood risk listAL8 7TL: not on the flood risk listAL8 7TP: not on the flood risk listAL8 7TQ: not on the flood risk listAL8 7TS: not on the flood risk listAL8 7TT: not on the flood risk listAL8 7TU: not on the flood risk listAL8 7TX: not on the flood risk listAL8 7TY: not on the flood risk listAL8 7XA: not on the flood risk listAL8 7XB: not on the flood risk listAL8 7XD: not on the flood risk listAL8 7XE: not on the flood risk listAL8 7XF: not on the flood risk listAL8 7XH: not on the flood risk listAL8 6DF: very low flood risk onlyAL8 6XF: low flood risk at worstAL8 7TN: high flood riskAL8 7TR: high flood riskAL8 7TW: high flood risk Welwyn Garden City Map of every postcode in AL8, by flood risk Of the 422 postcodes in AL8 that ONS places, 3 have a home or business at high risk, 1 are at low risk at worst, 1 are at very low risk only and 417 are not on the Environment Agency's at-risk list. Places named: Welwyn Garden City. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. Welwyn Garden City
  • A home or business at high risk: 3
  • At medium risk at worst: 0
  • At low risk at worst: 1
  • At very low risk only: 1
  • Not on the at-risk list: 417

Of the 422 postcodes in AL8 that ONS places, 3 have a home or business at high risk, 1 are at low risk at worst, 1 are at very low risk only and 417 are not on the Environment Agency's at-risk list.

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. 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 51.8036, longitude -0.2118. 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; flood risk: Environment Agency, published 6 July 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

The postcodes at high risk

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

AL8 7TR5 at high riskAL8 7TN1 at high riskAL8 7TW1 at high risk

What broadband can you get in AL8?

Ofcom reports on 413 of the 422 postcodes in AL8. At 361 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit361 of 413
Postcodes where every home can get superfast390 of 413

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

Is AL8 at risk of flooding?

5 of the 422 postcodes in AL8 have a home or business in an area at risk of flooding from rivers or the sea, the Environment Agency says. At those, it puts 7 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 5 of 422 postcodes High: 7Low: 11Very low: 6

High: 3.3% or more a year (1 in 30). Medium: 1% to 3.3% a year. Low: 0.1% to 1% a year. Very low: under 0.1% a year (1 in 1,000). Each band is the chance of flooding in any one year.

Homes and businesses in an area at risk of flooding from rivers or the sea, as the Environment Agency counts them, added up over the postcodes. It is for the land, not each building, and leaves out surface water, groundwater and sewers. Each postcode page has its own figures and its flood warning areas.

Source: Environment Agency, Risk of Flooding from Rivers and Sea (postcodes in areas at risk), published 6 July 2026, Open Government Licence v3.0. How we use it

What do homes sell for in AL8?

Homes in AL8 sold for a typical £512,500 in the 12 months to August 2026, across 144 sales, down 1% on the 12 months before, HM Land Registry's figures show.

£512,500 typical price, the 12 months to August 2026
£517,500 12 months to August 2025
▼ down 1% on the 12 months before
  • Detached £882,000 28 sales
  • Semi-detached £637,500 33 sales
  • Terraced £465,000 53 sales
  • Flat or maisonette £266,000 30 sales

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

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 AL8

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

AL8 6213 postcodesAL8 7209 postcodes
UK postcode format explained

Places in AL8

Towns and villages with postcodes in AL8, and how many each has here.

Welwyn Garden City postcodes,395

Who covers AL8

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

  • Welwyn Hatfield422

Police force areas

  • Hertfordshire422

Next to AL8

AL7 postcode district AL9 postcode district All AL districts Welwyn Garden City postcodes

"Next to" is by number: the districts before and after AL8 in the AL area.

Check a postcode

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