Welham Green

Welham Green is covered by postcode districts AL9 and AL10. It is in the Welwyn Hatfield council area, Hertfordshire.

Every postcode in Welham Green, and which are new since 2020

Map of every postcode in Welham Green, by new since 2020 Of the 94 postcodes in Welham Green that ONS places, 1 are new since 2020 and 93 were in use before 2020. Places named: Welham Green. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A1000A1001 AL10 8TQ: before 2020AL10 8XB: before 2020AL9 5SB: before 2020AL9 7DF: before 2020AL9 7DG: before 2020AL9 7DH: before 2020AL9 7DJ: before 2020AL9 7DL: before 2020AL9 7DN: before 2020AL9 7DQ: before 2020AL9 7DS: before 2020AL9 7DU: before 2020AL9 7DW: before 2020AL9 7DY: before 2020AL9 7DZ: before 2020AL9 7EA: before 2020AL9 7EB: before 2020AL9 7ED: before 2020AL9 7EE: before 2020AL9 7EL: before 2020AL9 7EW: before 2020AL9 7FA: before 2020AL9 7HB: before 2020AL9 7HF: before 2020AL9 7HJ: before 2020AL9 7HN: before 2020AL9 7HR: before 2020AL9 7HT: before 2020AL9 7HX: before 2020AL9 7HZ: before 2020AL9 7JA: before 2020AL9 7JB: before 2020AL9 7JE: before 2020AL9 7JL: before 2020AL9 7LD: before 2020AL9 7LE: before 2020AL9 7LF: before 2020AL9 7LG: before 2020AL9 7LH: before 2020AL9 7LJ: before 2020AL9 7LL: before 2020AL9 7LN: before 2020AL9 7LP: before 2020AL9 7LQ: before 2020AL9 7LR: before 2020AL9 7LS: before 2020AL9 7LT: before 2020AL9 7LU: before 2020AL9 7LW: before 2020AL9 7LY: before 2020AL9 7LZ: before 2020AL9 7NA: before 2020AL9 7NB: before 2020AL9 7ND: before 2020AL9 7NE: before 2020AL9 7NF: before 2020AL9 7NG: before 2020AL9 7NH: before 2020AL9 7NJ: before 2020AL9 7NL: before 2020AL9 7NN: before 2020AL9 7NP: before 2020AL9 7NR: before 2020AL9 7NS: before 2020AL9 7NT: before 2020AL9 7NU: before 2020AL9 7NW: before 2020AL9 7NX: before 2020AL9 7NY: before 2020AL9 7NZ: before 2020AL9 7PA: before 2020AL9 7PB: before 2020AL9 7PD: before 2020AL9 7PE: before 2020AL9 7PF: before 2020AL9 7PG: before 2020AL9 7PH: before 2020AL9 7PJ: before 2020AL9 7PL: before 2020AL9 7PN: before 2020AL9 7PP: before 2020AL9 7PQ: before 2020AL9 7PR: before 2020AL9 7PS: before 2020AL9 7PT: before 2020AL9 7PU: before 2020AL9 7PW: before 2020AL9 7PX: before 2020AL9 7PY: before 2020AL9 7PZ: before 2020AL9 7QA: before 2020AL9 7SW: before 2020AL9 7YZ: before 2020AL9 7EX: new since 2020 Welham Green Map of every postcode in Welham Green, by new since 2020 Of the 94 postcodes in Welham Green that ONS places, 1 are new since 2020 and 93 were in use before 2020. Places named: Welham Green. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A1000 Welham Green
  • New since 2020: 1
  • In use before 2020: 93

Of the 94 postcodes in Welham Green that ONS places, 1 are new since 2020 and 93 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.

The middle of its postcodes: latitude 51.7354, longitude -0.2163. Open this area on OpenStreetMap

Sources: ONS Postcode Directory, August 2026, loaded 20 October 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.

The newest postcode

What is it like to live in Welham Green?

Homes sold for a typical £510,000 in the 12 months to September 2026. At 67 of the 94 postcodes Ofcom reports on, every home and business can get gigabit broadband. The Environment Agency counts 3 homes and businesses at high or medium risk of flooding from rivers or the sea, at 2 of its 94 postcodes. It has 2 primary schools at its postcodes. The nearest GP practice is Potterells Medical Centre, 1.1 km from the middle. The nearest railway station is Welham Green, 400 metres 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 Welham Green?

Homes in Welham Green sold for a typical £510,000 in the 12 months to September 2026, across 33 sales, HM Land Registry's figures show. The 12 months before gave £508,000 from 27 sales. With fewer than 30 sales a year, a change can come from which homes happened to sell, so we do not give one.

£510,000 typical price, the 12 months to September 2026
£508,000 12 months to September 2025
  • Detached 3 sales, too few to price
  • Semi-detached £520,000 15 sales
  • Terraced £480,000 13 sales
  • Flat or maisonette 2 sales, too few to price

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

Across the whole AL9 district, Welham Green's main postcode district: a typical £575,000.

Sales at the postcodes ONS places in Welham Green: 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 Welham Green?

1 of the 94 postcodes now in use in Welham Green came into use in January 2020 or later, ONS says. In the 12 months to September 2025, 0 of the 27 homes sold in Welham Green were newly built (0%), HM Land Registry's records show; across the AL9 district, 0%.

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 Welham GreenAcross the AL9 district
The 12 months to September 2026 0 of 33 (0%) 0 of 106 (0%)
The 12 months to September 2025 0 of 27 (0%) 0 of 123 (0%)

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 Welham Green?

Ofcom reports on 94 of the 94 postcodes in Welham Green. At 67 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit67 of 94
Postcodes where every home can get superfast83 of 94

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 Welham Green at risk of flooding?

2 of the 94 postcodes in Welham Green 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 3 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 2 of 94 postcodes High: 3Low: 3

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 Welham Green?

The primary schools are at the postcodes in Welham Green. 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 Welham Green?

The nearest railway station to the centre point of the postcodes in Welham Green is Welham Green Rail Station, 400 m away in a straight line.

  • Welham Green Rail Station Railway station 400 mWalk
  • Brookmans Park Rail Station Railway station 1.8 kmCycle
  • Hatfield (Herts) Rail Station Railway station 3.2 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 Welham Green?

There is no GP practice at the postcodes in Welham Green. These are the nearest to its middle, in a straight line. 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 Welham Green safe? Crime recorded around it

Police.uk records 512 crimes and reports of anti-social behaviour within a mile of the middle of the postcodes in Welham Green 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. 36 September 2025
  2. 40 October 2025
  3. 45 November 2025
  4. 44 December 2025
  5. 36 January 2026
  6. 42 February 2026
  7. 41 March 2026
  8. 34 April 2026
  9. 52 May 2026
  10. 52 June 2026
  11. 48 July 2026
  12. 42 August 2026

By kind, over the 12 months

Violence and sexual offences188 reports
Anti-social behaviour132 reports
Criminal damage and arson56 reports
Other theft36 reports
Vehicle crime30 reports
Burglary19 reports
Drugs18 reports
Public order14 reports

Also: other crime 11, possession of weapons 4, bicycle theft 2, theft from the person 1, robbery 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 Welham Green?

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 94 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 Welham Green

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

Welham Green postcodes

94 postcodes in use in Welham Green, by district:

Those districts are all in the AL postcode area.

Check a Welham Green 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 Welham Green

With the typical price of a home in each, to set beside Welham Green's £510,000. Distances are straight lines between the middles of each place's postcodes.

Quick answers about Welham Green

What is the postcode for Welham Green?
Postcode districts AL9 and AL10, with 94 postcodes in use. Source: ONS.
Which council is Welham Green in?
Welwyn Hatfield, with Hertfordshire as its county council. Source: ONS.
Who is the MP for Welham Green?
Andrew Lewin (Labour), for Welwyn Hatfield. Source: UK Parliament and ONS.
How much are houses in Welham Green?
A typical £510,000 in the 12 months to September 2026, from 33 sales. Source: HM Land Registry.
What schools are in Welham Green?
Primary schools at its postcodes include St Mary's Church of England VA Primary School, Welham Green and De Havilland Primary School; the nearest secondary school to the middle of its postcodes is Chancellor's School, 2.4 km away. Source: Department for Education.
Does Welham Green have a railway station?
Yes: Welham Green station, 400 metres from the middle of its postcodes in a straight line. Source: Department for Transport.
What broadband can you get in Welham Green?
Ofcom reports on 94 of the 94 postcodes in Welham Green. At 67 of them every home and business can get gigabit broadband. Source: Ofcom.
Is Welham Green at risk of flooding?
2 of the 94 postcodes in Welham Green 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 3 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 Welham Green?
1 of the 94 postcodes now in use in Welham Green came into use in January 2020 or later, ONS says. In the 12 months to September 2025, 0 of the 27 homes sold in Welham Green were newly built (0%), HM Land Registry's records show; across the AL9 district, 0%. Source: ONS and HM Land Registry.

Where the facts on this page come from

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