CM21 0ND East Hertfordshire
Live postcode, introduced January 1980. Ward: Sawbridgeworth. Region: East of England.
Streets
- Parsonage Lane, Spellbrook: 14 addresses
- Spellbrook Lane, Spellbrook: 1 address
- Unnamed street near Parsonage Lane, Sawbridgeworth: 1 address
Council tax
What each band costs in East Hertfordshire in 2026-27: Band D £2,455 a year on average, including the police, fire and any county and parish charges.
| A | B | C | D | E | F | G | H |
|---|---|---|---|---|---|---|---|
| £1,637 | £1,909 | £2,182 | £2,455 | £3,000 | £3,546 | £4,091 | £4,910 |
Homes by band in the neighbourhood around this postcode: most are in band C (41% of about 1,040 homes).
Planning and heritage
- Conservation area: no postcode centre in this postcode is in one.
- Listed buildings within 100 m of this postcode: none.
- Article 4 direction (removing permitted development rights): none recorded, though not every council has published theirs.
- Tree preservation orders: none recorded, though not every council has published theirs.
- Green belt: yes, East Hertfordshire.
Flood risk
Rivers, the sea or surface water: in this postcode, 0 addresses are in areas at high risk, 0 at medium risk and 1 at low risk. Each address counts once, at the higher of its rivers-and-sea and surface-water risk.
Rivers and the sea alone: no home is in an area at risk.
High: 3.3% (1 in 30) or more chance of flooding a year. Medium: 1% to 3.3%. Low: 0.1% to 1%. Very low: under 0.1%. The rivers and sea figures allow for flood defences. Counts cover whole postcodes, which can include other streets.
Flood zone for planning: no postcode centre is in flood zone 2 or 3.
Broadband
Superfast 100%, ultrafast 92%, gigabit 92% of premises; 0% cannot get 10 Mbit/s. Ofcom Connected Nations, data as at January 2026.
Getting around
| Nearest | Distance | |
|---|---|---|
| Railway stations | Sawbridgeworth 471,000 journeys in 2024–25 | 1.7 km |
| Harlow Mill 279,000 journeys in 2024–25 | 4.2 km | |
| Bishops Stortford 3.0 million journeys in 2024–25 | 4.6 km | |
| Bus stops | 0 stops within 400 m, 4 within 800 m; nearest Parsonage Lane Sawbridgeworth | 480 m |
| Bus or coach station | Interchange Bishops Stortford | 4.5 km |
| Car parks | Bell Street Car Park | 1.6 km |
| EV charging points | bp pulse Charging Station | 4.8 km |
| Airport with scheduled flights | London Stansted Airport STN | 8.9 km |
Local services
| Nearest | Distance | |
|---|---|---|
| GP surgeries | 1 practices within 1.6 km; nearest Central Surgery | 1.6 km |
| Pharmacies | 2 pharmacies within 1.6 km; nearest Village Pharmacy | 1.6 km |
| NHS dentists | 2 practices within 1.6 km; nearest Dental Surgery | 1.3 km |
| Hospital | Capio Rivers Hospital | 2.5 km |
| Police station | Sawbridge Police Station | 1.2 km |
| Cash machines | Br Spar Gainsborough, Corringham Road | 3.5 km |
Parks and green space
| Nearest | Distance | |
|---|---|---|
| Park or garden | Unnamed 2,990 m² | 1.6 km |
| Play area | Edens Mount Play Area 1,200 m² | 1.0 km |
| Playing field | Bullfields 1.8 ha | 1.1 km |
| Allotments | Bullfields 1.3 ha | 1.0 km |
Air quality
| Pollutant | Here | UK limit | WHO guideline |
|---|---|---|---|
| Nitrogen dioxide (NO2) | 8.1 | 40 | 10 |
| Fine particles (PM2.5) | 7.1 | 20 | 5 |
| Particles (PM10) | 12.8 | 40 | 15 |
All three are within the UK legal limits; PM2.5 is above the WHO guideline, as in most towns and cities.
Road and rail noise
Noise figures are still being loaded.
People and work
Who lives here
| Around this postcode | England | |
|---|---|---|
| Median age | 52 | 40 |
| Children under 15 | 14% | 17% |
| Aged 65 and over | 23% | 18% |
Homes
| Around this postcode | England | |
|---|---|---|
| Owned (outright or with a mortgage) | 84% | 61% |
| Owned outright | 46% | 33% |
| Shared ownership | 0% | 1% |
| Social rented | 7% | 17% |
| Private rented | 9% | 21% |
Work and commuting
| Around this postcode | England | |
|---|---|---|
| Adults (16 and over) in work | 57% | 57% |
| Unemployment (of those working or looking for work) | 0% | 6% |
| Retired (of adults) | 28% | 22% |
| Long-term sick or disabled (of adults) | 1% | 4% |
| Work mainly from home (of those in work) | 41% | 32% |
| Travel to work by car or van | 47% | 48% |
| By train, Underground, metro or tram | 5% | 4% |
| By any public transport, including bus | 6% | 8% |
| On foot or by bicycle | 5% | 10% |
| Work within 10 km of home (of those who travel to work) | 58% | 65% |
| Work 30 km or more away | 15% | 8% |
Education and languages
| Around this postcode | England | |
|---|---|---|
| Degree or other higher qualification, Level 4+ (of adults) | 35% | 34% |
| No qualifications | 24% | 18% |
| Apprenticeship as highest qualification | 3% | 5% |
| Main language English (aged 3 and over) | 97% | 91% |
| Cannot speak English well or at all | under 1% | 2% |
Deprivation
The neighbourhood around this postcode is in decile 5 of 10 on the English Indices of Deprivation 2025, where 1 is the most deprived tenth of England's 33,755 neighbourhoods and 10 the least.
The full dossier for this postcode's main street is on Parsonage Lane.