SG12 postcode area guide — East Hertfordshire

Where is SG12?

Broadband & internet speeds in SG12

Strong coverage

Broadband availability in the SG12 postcode district (East Hertfordshire) is Strong — superfast is near-universal and gigabit is rolling out. Across the 917 postcodes Ofcom measures in SG12, superfast broadband (30 Mbit/s or faster) reaches 91.7% of premises and gigabit-capable lines are available to 69.5%.

Around 0% of premises in SG12 fall below the Universal Service Obligation (a minimum of 10 Mbit/s download and 1 Mbit/s upload), so the overwhelming majority of homes and businesses here can already order a decent fixed line. For a business that depends on its connection, the figures that matter most are gigabit and full-fibre availability — the symmetric, low-contention services we quote leased lines and FTTP against.

Sample postcodes in SG12

Run a speed test to see what you're actually getting, or check your exact postcode.

Mobile signal around East Hertfordshire

Ofcom's coverage model for the wider East Hertfordshire district (71,670 premises):

Signal varies street by street — use the mobile coverage checker to compare EE, O2, Three and Vodafone at an exact postcode.

Crime in SG12

Police recorded 109 incidents within about a mile of the centre of SG12 in May 2026 (latest published street-level data). The breakdown:

Raw counts favour busy town centres — a high street with shops and nightlife records more incidents than a residential cul-de-sac. Source: police.uk open data (point sample around the district centroid).

House prices in SG12

Based on 368 sales registered with HM Land Registry in the last 12 months, the median sold price in SG12 is £447,500, up 13.3% on the previous year (£395,000).

Latest recorded sales in SG12

Contains HM Land Registry data © Crown copyright and database right 2026, licensed under the Open Government Licence v3.0.

Who lives here? East Hertfordshire demographics

Census 2021 figures for the wider East Hertfordshire district (150,155 residents, 62,023 households):

Source: ONS Census 2021 (district level — the finest openly licensed cut we republish). © Crown copyright, OGL v3.0.

Schools in and around SG12

Source: DfE Get Information about Schools (England & Wales). Check Ofsted report cards for inspection detail — headline one-word grades were retired in 2024.

Food hygiene ratings in SG12

212 rated food businesses operate in SG12. 152 hold the top rating of 5, 24 are rated 4, and 3 are rated 2 or below.

Among the 5-rated: AA Connections Limited, Age Concern, All Nations Christian College, All Nations Christian College Limited, Allenburys Sports And Social Club.

Source: Food Standards Agency, food hygiene ratings (FHRS) open data.

Energy performance (EPC) in SG12

From a sample of 149 Energy Performance Certificates across 10 SG12 postcodes, the most common rating is band C (average band D). 55% of sampled homes are rated C or better.

Source: MHCLG Energy Performance of Buildings Data (England & Wales), sampled at postcode level and refreshed monthly. Individual certificates are on each postcode’s page.

Phone area codes for East Hertfordshire

Landlines around SG12 typically use:

Had a call from an unknown number? Use our free UK phone number checker to see who called.

What's it like living in SG12?

Postcodes in SG12

Neighbouring districts

All Stevenage (SG) postcode districts ›

Frequently asked questions

Sources: HM Land Registry Price Paid Data, police.uk street-level crime, Ofcom Connected Nations, ONS Census 2021, DfE Get Information about Schools, Food Standards Agency FHRS — all © Crown copyright, licensed under the Open Government Licence v3.0. Figures are area aggregates; individual addresses vary. Energy performance (EPC) data will be added when our Open Data Communities registration is approved.