Welwyn

Welwyn is covered by postcode district AL6. It is in the Welwyn Hatfield council area, Hertfordshire.

Every postcode in Welwyn, by gigabit broadband

Map of every postcode in Welwyn, by gigabit broadband Of the 141 postcodes in Welwyn that ONS places, 8 have no home or business that can get gigabit, 14 have some that can, 118 can all get it and 1 have no Ofcom figure. One group of postcodes without gigabit is outlined: 5 postcodes without gigabit. Places named: Welwyn. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A1(M) AL6 9SB: no Ofcom figureAL6 9AS: gigabit for allAL6 9AU: gigabit for allAL6 9DF: gigabit for allAL6 9DJ: gigabit for allAL6 9DL: gigabit for allAL6 9DN: gigabit for allAL6 9DP: gigabit for allAL6 9DQ: gigabit for allAL6 9DS: gigabit for allAL6 9DW: gigabit for allAL6 9DY: gigabit for allAL6 9DZ: gigabit for allAL6 9EA: gigabit for allAL6 9ED: gigabit for allAL6 9EE: gigabit for allAL6 9EF: gigabit for allAL6 9EG: gigabit for allAL6 9EH: gigabit for allAL6 9EJ: gigabit for allAL6 9EL: gigabit for allAL6 9EN: gigabit for allAL6 9EP: gigabit for allAL6 9EQ: gigabit for allAL6 9ER: gigabit for allAL6 9ES: gigabit for allAL6 9EU: gigabit for allAL6 9EX: gigabit for allAL6 9EY: gigabit for allAL6 9EZ: gigabit for allAL6 9FB: gigabit for allAL6 9FD: gigabit for allAL6 9FH: gigabit for allAL6 9FJ: gigabit for allAL6 9FL: gigabit for allAL6 9FN: gigabit for allAL6 9GS: gigabit for allAL6 9HA: gigabit for allAL6 9HB: gigabit for allAL6 9HQ: gigabit for allAL6 9HS: gigabit for allAL6 9HT: gigabit for allAL6 9HU: gigabit for allAL6 9HX: gigabit for allAL6 9HY: gigabit for allAL6 9HZ: gigabit for allAL6 9JA: gigabit for allAL6 9JB: gigabit for allAL6 9JD: gigabit for allAL6 9JE: gigabit for allAL6 9JF: gigabit for allAL6 9JG: gigabit for allAL6 9JH: gigabit for allAL6 9JJ: gigabit for allAL6 9JL: gigabit for allAL6 9JN: gigabit for allAL6 9JP: gigabit for allAL6 9JQ: gigabit for allAL6 9JR: gigabit for allAL6 9JS: gigabit for allAL6 9JT: gigabit for allAL6 9JU: gigabit for allAL6 9JW: gigabit for allAL6 9JX: gigabit for allAL6 9JY: gigabit for allAL6 9JZ: gigabit for allAL6 9LB: gigabit for allAL6 9LD: gigabit for allAL6 9LE: gigabit for allAL6 9LF: gigabit for allAL6 9LH: gigabit for allAL6 9LN: gigabit for allAL6 9LP: gigabit for allAL6 9LR: gigabit for allAL6 9LS: gigabit for allAL6 9LT: gigabit for allAL6 9LU: gigabit for allAL6 9LW: gigabit for allAL6 9LX: gigabit for allAL6 9LY: gigabit for allAL6 9LZ: gigabit for allAL6 9NA: gigabit for allAL6 9NB: gigabit for allAL6 9ND: gigabit for allAL6 9NE: gigabit for allAL6 9NQ: gigabit for allAL6 9NU: gigabit for allAL6 9NX: gigabit for allAL6 9PA: gigabit for allAL6 9PB: gigabit for allAL6 9PD: gigabit for allAL6 9PE: gigabit for allAL6 9PF: gigabit for allAL6 9PG: gigabit for allAL6 9PH: gigabit for allAL6 9PJ: gigabit for allAL6 9PL: gigabit for allAL6 9PN: gigabit for allAL6 9PP: gigabit for allAL6 9PQ: gigabit for allAL6 9PR: gigabit for allAL6 9PS: gigabit for allAL6 9PT: gigabit for allAL6 9PU: gigabit for allAL6 9PW: gigabit for allAL6 9PX: gigabit for allAL6 9PY: gigabit for allAL6 9PZ: gigabit for allAL6 9QB: gigabit for allAL6 9QD: gigabit for allAL6 9QE: gigabit for allAL6 9QF: gigabit for allAL6 9RD: gigabit for allAL6 9RE: gigabit for allAL6 9RF: gigabit for allAL6 9RJ: gigabit for allAL6 9RL: gigabit for allAL6 9RR: gigabit for allAL6 9RS: gigabit for allAL6 9AT: some gigabitAL6 9ET: some gigabitAL6 9FE: some gigabitAL6 9NH: some gigabitAL6 9NT: some gigabitAL6 9QA: some gigabitAL6 9RA: some gigabitAL6 9RB: some gigabitAL6 9RG: some gigabitAL6 9RH: some gigabitAL6 9RN: some gigabitAL6 9RP: some gigabitAL6 9RQ: some gigabitAL6 9RW: some gigabitAL6 9FP: no gigabitAL6 9FQ: no gigabitAL6 9FR: no gigabitAL6 9FS: no gigabitAL6 9FT: no gigabitAL6 9HN: no gigabitAL6 9HR: no gigabitAL6 9LA: no gigabit Welwyn 5 postcodes without gigabit, outlined: this goes to AL6 9FS, the one nearest the middle of them5 postcodes without gigabit Map of every postcode in Welwyn, by gigabit broadband Of the 141 postcodes in Welwyn that ONS places, 8 have no home or business that can get gigabit, 14 have some that can, 118 can all get it and 1 have no Ofcom figure. One group of postcodes without gigabit is outlined: 5 postcodes without gigabit. Places named: Welwyn. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Welwyn 5 postcodes without gigabit, outlined: this goes to AL6 9FS, the one nearest the middle of them5 postcodes without gigabit
  • No home or business can get gigabit: 8
  • Some can get gigabit: 14
  • Every home and business can get gigabit: 118
  • Ofcom gives no figure: 1
  • Outline: where 5 or more postcodes without gigabit lie together

Of the 141 postcodes in Welwyn that ONS places, 8 have no home or business that can get gigabit, 14 have some that can, 118 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 150 metres of each other. It is not a boundary, and no boundary is drawn.

The middle of its postcodes: latitude 51.8295, longitude -0.2158. Open this area on OpenStreetMap

Sources: ONS Postcode Directory, August 2026, loaded 20 October 2026; Ofcom Connected Nations, Connected Nations, Spring 2026; roads, rivers and built-up areas: Ordnance Survey open maps. 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.

Where the postcodes without gigabit lie together

What is it like to live in Welwyn?

Homes sold for a typical £470,000 in the 12 months to September 2026. At 118 of the 140 postcodes Ofcom reports on, every home and business can get gigabit broadband. The Environment Agency counts 5 homes and businesses at high or medium risk of flooding from rivers or the sea, at 12 of its 141 postcodes. It has 1 primary school at its postcodes. One GP practice is at its postcodes. The nearest railway station is Welwyn North, 1.8 km from the middle of its postcodes in a straight line.

We don't rate places; here are the figures so you can judge.

Sources: HM Land Registry Price Paid Data; Ofcom Connected Nations; Environment Agency flood risk; Get Information about Schools; NHS GP practices; NaPTAN. Each figure is from a section of this page, which gives its date.

What do homes cost in Welwyn?

Homes in Welwyn sold for a typical £470,000 in the 12 months to September 2026, across 31 sales, HM Land Registry's figures show. The 12 months before gave £525,000 from 52 sales: not a change larger than chance would explain, given which homes happened to sell.

£470,000 typical price, the 12 months to September 2026
£525,000 12 months to September 2025
  • Detached £781,250 6 sales
  • Semi-detached £520,000 5 sales
  • Terraced £442,500 16 sales
  • Flat or maisonette 4 sales, too few to price

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

Across the whole AL6 district, Welwyn's main postcode district: a typical £713,750.

Sales at the postcodes ONS places in Welwyn: 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 October 2026.

Are new homes being built in Welwyn?

1 of the 141 postcodes now in use in Welwyn came into use in January 2020 or later, ONS says. In the 12 months to September 2025, 0 of the 52 homes sold in Welwyn were newly built (0%), HM Land Registry's records show; across the AL6 district, 3%.

The newest postcodes

A new postcode is often a new street or estate, but Royal Mail also makes new postcodes when it reorganises old ones, so not every one means new homes. Only postcodes still in use are counted.

New homes among the homes sold

PeriodIn WelwynAcross the AL6 district
The 12 months to September 2026 0 of 31 (0%) 0 of 124 (0%)
The 12 months to September 2025 0 of 52 (0%) 5 of 155 (3%)

Standard sales of homes at market value that HM Land Registry marks as newly built. New homes take longer to be registered than other sales, so the latest 12 months count fewer of them than were sold. A share is given from 5 sales or more.

Sources: ONS Postcode Directory, August 2026, loaded 20 October 2026; HM Land Registry Price Paid Data, files dated 28 October 2026.

What broadband can you get in Welwyn?

Ofcom reports on 140 of the 141 postcodes in Welwyn. At 118 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit118 of 140
Postcodes where every home can get superfast139 of 140

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, Connected Nations, Spring 2026, data for January 2026.

Is Welwyn at risk of flooding?

12 of the 141 postcodes in Welwyn 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 5 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 12 of 141 postcodes High: 2Medium: 3Low: 44

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 flood risk, published 6 July 2026.

Which schools are in Welwyn?

The primary schools are at the postcodes in Welwyn. There is no secondary school at its postcodes; these are the nearest to its middle. Distances are straight lines from the middle of its postcodes. Distance is not a catchment: each council sets its own admission rules. Special schools and alternative provision, which children join by referral, are not listed.

An orange bar: the school has as many pupils as places, or more (Department for Education's figures).

Find and compare schools in England, on GOV.UK

Source: Get Information about Schools, read 17 October 2026. Each school opens its own record there.

How far is the station from Welwyn?

The nearest railway station to the centre point of the postcodes in Welwyn is Welwyn North Rail Station, 1.8 km away in a straight line.

  • Welwyn North Rail Station Railway station 1.8 kmCycle
  • Welwyn Garden City Rail Station Railway station 3.3 kmCycle
  • Knebworth Rail Station Railway station 4.6 kmCycle

Straight-line distances from the centre point, not routes. Walk: under 1.2 km. Cycle: 1.2 to 5 km. Drive: further.

Straight-line distances from the middle of the postcodes, not routes. Each postcode page lists its own nearest stations and bus stops. The Department for Transport's register does not say how often services run.

Source: NaPTAN, read 17 October 2026.

Which GP surgeries are in Welwyn?

The GP practices at the postcodes in Welwyn. Each practice sets the area it takes patients from, so check with it before registering.

Find a GP on the NHS website

Sources: NHS GP practices, read 17 October 2026; Care Quality Commission, ratings of 1 October 2026.

Is Welwyn safe? Crime recorded around it

Police.uk records 379 crimes and reports of anti-social behaviour within a mile of the middle of the postcodes in Welwyn over the 12 months from September 2025 to August 2026. August 2026 is the latest month it has published. These are counts, not a rate: we hold no count of the people who live, work or pass through, so we do not say whether a place is safe.

Each month, September 2025 to August 2026

  1. 35 September 2025
  2. 28 October 2025
  3. 39 November 2025
  4. 31 December 2025
  5. 29 January 2026
  6. 31 February 2026
  7. 36 March 2026
  8. 15 April 2026
  9. 27 May 2026
  10. 29 June 2026
  11. 40 July 2026
  12. 39 August 2026

By kind, over the 12 months

Violence and sexual offences132 reports
Anti-social behaviour85 reports
Other theft64 reports
Burglary20 reports
Public order18 reports
Vehicle crime18 reports
Criminal damage and arson17 reports
Drugs7 reports

Also: other crime 7, shoplifting 6, bicycle theft 3, theft from the person 1, possession of weapons 1.

Police.uk says its locations "always represent the approximate location of a crime". Each crime is moved to the nearest of a fixed list of map points, each over a street centre, a public place or a commercial premises, chosen so that every point covers at least eight addresses or none. A mile is a wide circle: in a town it takes in the centre and its shops, where much crime is recorded.

Crime around one postcode

Source: police.uk, data to August 2026, from its download of 30 September 2026.

Who runs Welwyn?

District, borough or city council
Welwyn Hatfield
County council
Hertfordshire
Parliamentary constituency
Welwyn Hatfield
Police force area
Hertfordshire
Region
East of England
Country
England
MP
Andrew Lewin (Labour)

All 141 postcodes here share these. Wards differ: check a postcode for yours. What council am I in?

Sources: ONS Postcode Directory, August 2026, loaded 20 October 2026; UK Parliament, read 14 October 2026.

Moving to Welwyn

Who to tell and what to sort out in your first week.

Welwyn postcodes

141 postcodes in use in Welwyn, by district:

That district is in the AL postcode area.

Check a Welwyn postcode

Enter a full postcode to see its ward, its flood risk, house prices in its sector and its nearest schools.

Do not know the postcode? What is my postcode?

Places near Welwyn

With the typical price of a home in each, to set beside Welwyn's £470,000. Distances are straight lines between the middles of each place's postcodes.

Quick answers about Welwyn

What is the postcode for Welwyn?
Postcode district AL6, with 141 postcodes in use. Source: ONS.
Which council is Welwyn in?
Welwyn Hatfield, with Hertfordshire as its county council. Source: ONS.
Who is the MP for Welwyn?
Andrew Lewin (Labour), for Welwyn Hatfield. Source: UK Parliament and ONS.
How much are houses in Welwyn?
A typical £470,000 in the 12 months to September 2026, from 31 sales. Source: HM Land Registry.
What schools are in Welwyn?
Primary schools at its postcodes include Welwyn St Mary's Church of England Voluntary Aided Primary School; the nearest secondary school to the middle of its postcodes is Sherrardswood School, 650 metres away. Source: Department for Education.
Does Welwyn have a railway station?
The nearest is Welwyn North station, 1.8 km from the middle of its postcodes in a straight line. Source: Department for Transport.
What broadband can you get in Welwyn?
Ofcom reports on 140 of the 141 postcodes in Welwyn. At 118 of them every home and business can get gigabit broadband. Source: Ofcom.
Is Welwyn at risk of flooding?
12 of the 141 postcodes in Welwyn 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 5 homes and businesses in an area at high or medium risk. River and sea risk for the land, not surface water. Source: Environment Agency.
Are new homes being built in Welwyn?
1 of the 141 postcodes now in use in Welwyn came into use in January 2020 or later, ONS says. In the 12 months to September 2025, 0 of the 52 homes sold in Welwyn were newly built (0%), HM Land Registry's records show; across the AL6 district, 3%. Source: ONS and HM Land Registry.

Where the facts on this page come from

Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. This uses Care Quality Commission information. Contains Parliamentary information licensed under the Open Parliament Licence v3.0.

Licences: Open Government Licence v3.0; Open Parliament Licence v3.0.

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