SG4
Postcode districtPostcode district covering Hitchin, Codicote and Walsworth, in North Hertfordshire.
Approximate outline worked out by Open Index from the ONS Postcode Directory: each census output area belongs to the district that holds most of its postcodes. People, homes, recorded crime and broadband add up those output areas. House sales count every sale with an SG4 postcode. How census figures are added up
Radon Affected Area by postcode district
Worked out by Open Index · 2022
About 88% of people in SG4 live in a 1 km square that the radon atlas marks as a radon Affected Area.
How SG4 compares
Each dot is a postcode district. The black line marks the middle one.
Is SG4 safe? What police records show
In the 12 months to August 2026, police recorded crimes and anti-social behaviour in SG4 at a rate of 48.6 per 1,000 people.
That compares with 73.9 per 1,000 people across the SG postcode area.
In August 2026 alone, 146 cases of crime and anti-social behaviour were recorded in SG4.
In the 12 months to August 2026, the most common types were violence and sexual offences (516), anti-social behaviour (343) and other crime (249).
A year earlier, the recorded crime rate in SG4 was 43.5 per 1,000 people.
Worked out by Open Index from police.uk crime records and ONS and NISRA population estimates.
Rates are per resident, so places that many people work in or visit, such as Westminster, the City of London and other city centres, have far higher rates than their residents alone would suggest.
Deprivation in SG4, neighbourhood by neighbourhood
- Deprivation is ranked by neighbourhood, so SG4 has no single figure. Of its 20 neighbourhoods with a rank:
- Decile 5: 1 neighbourhood
- Decile 6: 3 neighbourhoods
- Decile 7: 5 neighbourhoods
- Decile 8: 3 neighbourhoods
- Decile 9: 1 neighbourhood
- Decile 10 (England’s least deprived 10%): 7 neighbourhoods
English Indices of Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in England.
Neighbourhoods in SG4
| Name | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
|---|---|---|---|---|
| North Hertfordshire 010E | 1,426 | 117.7 per 1,000 | 7 | 76.9% |
| North Hertfordshire 011A | 1,562 | 30.2 per 1,000 | 10 | 98.9% |
| North Hertfordshire 011B | 1,743 | 42.6 per 1,000 | 8 | 99.2% |
| North Hertfordshire 011C | 1,699 | 41.6 per 1,000 | 10 | 83.5% |
| North Hertfordshire 011D | 1,360 | 77.9 per 1,000 | 5 | 100.0% |
| North Hertfordshire 011E | 1,345 | 38.1 per 1,000 | 7 | 100.0% |
| North Hertfordshire 012D | 2,062 | 14.9 per 1,000 | 10 | 96.2% |
| North Hertfordshire 013A | 1,754 | 105.0 per 1,000 | 7 | 90.0% |
| North Hertfordshire 013B | 1,480 | 21.2 per 1,000 | 10 | 100.0% |
| North Hertfordshire 013C | 1,607 | 19.0 per 1,000 | 10 | 99.1% |
| North Hertfordshire 013D | 1,669 | 32.7 per 1,000 | 10 | 85.6% |
| North Hertfordshire 013E | 1,361 | 29.6 per 1,000 | 10 | 96.5% |
| North Hertfordshire 014B | 1,167 | 52.8 per 1,000 | 7 | 67.8% |
| North Hertfordshire 014C | 1,582 | 61.7 per 1,000 | 6 | 19.1% |
| North Hertfordshire 014E | 1,077 | 29.3 per 1,000 | 8 | 28.6% |
| North Hertfordshire 015A | 1,534 | 70.8 per 1,000 | 8 | 85.1% |
| North Hertfordshire 015B | 1,143 | 58.2 per 1,000 | 7 | 75.5% |
| North Hertfordshire 015C | 2,261 | 29.2 per 1,000 | 9 | 9.7% |
| North Hertfordshire 016E | 2,066 | 42.7 per 1,000 | 6 | 72.6% |
| North Hertfordshire 017B | 1,409 | 65.3 per 1,000 | 6 | 78.8% |
MPs for SG4
- Alistair StrathernLabourMP for Hitchin82% of SG4’s postcodes
- Kevin BonaviaLabourMP for Stevenage12% of SG4’s postcodes
- Chris HinchliffLabourMP for North East Hertfordshire6.1% of SG4’s postcodes
- Andrew LewinLabourMP for Welwyn Hatfield0.1% of SG4’s postcodes
As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.
Middle areas in SG43
Postcode sectors in SG44
Council1
Towns in SG41
Postcode districts next to SG410
Nearest rail stations1
More in the SG postcode area2
SG4 in brief
SG4 is a postcode district covering Hitchin, Codicote and Walsworth, in North Hertfordshire.
About 30,969 people lived in SG4 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £490,000 in 2025 across 522 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 48.6 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in SG4 was £490,000 in 2025.
SG4 had 30,116 usual residents at the census.
About 88% of people in SG4 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In SG4, 78.0% of homes and businesses could get gigabit-capable broadband in January 2026.