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
- 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.
- 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
| Period | In Welham Green | Across 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.
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 checkerSource: 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.
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.
Primary
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.UKSource: 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.
- Potterells Medical Centre Care Quality Commission rating: Good CQC report September 2026 · Phone 01707 273338 1.1 kmWalk
- Burvill House Surgery Care Quality Commission rating: Good CQC report August 2022, over 3 years old · Phone 01707 269091 3.0 kmCycle
- Lister House Surgery Care Quality Commission rating: Good CQC report February 2024 · Phone 01707 283450 3.3 kmCycle
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
- 36 September 2025
- 40 October 2025
- 45 November 2025
- 44 December 2025
- 36 January 2026
- 42 February 2026
- 41 March 2026
- 34 April 2026
- 52 May 2026
- 52 June 2026
- 48 July 2026
- 42 August 2026
By kind, over the 12 months
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 postcodeSource: 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.
- Tell Welwyn Hatfield about council tax Council tax, on welhat.gov.uk
- Register to vote at the new address Register to vote on GOV.UK
- Register with a GP practice The nearest GP practices
- Take meter readings on the day you move in
- Power cut? Call 105. It is free. About 105, the power cut number
- Find out your bin day Check your bin day on BinDayBuddy, which reads the council's own collection system
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
- Office for National Statistics: ONS Postcode Directory
- HM Land Registry Price Paid Data
- Ofcom Connected Nations
- Environment Agency flood risk
- Department for Education: Get Information about Schools
- Department for Transport: NaPTAN
- NHS England: NHS GP practices
- Care Quality Commission
- data.police.uk: police.uk
- UK Parliament
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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