# SG18 Postcode district covering Biggleswade and Langford, in Central Bedfordshire. SG18 is a postcode district covering Biggleswade and Langford, in Central Bedfordshire. Median sale price £347,250 in 2025. Postcode district. Code SG18. In: [Postcodes](https://openindex.co.uk/postcode) › [SG](https://openindex.co.uk/postcode/sg) 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 SG18 postcode. [How census figures are added up](https://openindex.co.uk/sources/population) ## Key figures - **Median sale price: £347,250** (2025). The median price paid for a home in SG18 was £347,250 in 2025. 823rd most expensive of 2,235. Source: Worked out by Open Index from HM Land Registry Price Paid Data. Published 28 September 2026. https://openindex.co.uk/postcode/sg18#f-house-sales-median-price - **Population: 30,916** (2021). SG18 had 30,916 usual residents at the census (ONS Census 2021). 872nd most populated of 2,756. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026. https://openindex.co.uk/postcode/sg18#f-population - **People in radon Affected Area squares: 18%** (2022). About 18% of people in SG18 live in a 1 km square that the radon atlas marks as a radon Affected Area. UK 44%. Source: Worked out by Open Index from the UKHSA and BGS radon atlas and census output areas. Published 1 December 2022. https://openindex.co.uk/postcode/sg18#f-radon-affected-share - **Gigabit broadband coverage: 91.1%** (January 2026). In SG18, 91.1% of homes and businesses could get gigabit-capable broadband in January 2026 (Ofcom). UK 87.8%. Source: Connected Nations (Ofcom), January 2026. Published 13 May 2026. https://openindex.co.uk/postcode/sg18#f-gigabit-coverage ## On the map - [Radon Affected Area by postcode district](https://openindex.co.uk/map/radon-affected-areas?place=SG18) (Worked out by Open Index · 2022): About 18% of people in SG18 live in a 1 km square that the radon atlas marks as a radon Affected Area. - [Sales per year by postcode district](https://openindex.co.uk/map/house-sales-per-year?place=SG18) (Worked out by Open Index · 2025): 572 homes were sold in SG18 in 2025. - [Crime and ASB by postcode district](https://openindex.co.uk/map/recorded-crime?place=SG18) (Police recorded crime and outcomes (data.police.uk) · August 2026): Crime and anti-social behaviour for SG18. - [Population by postcode district](https://openindex.co.uk/map/population?place=SG18) (Census 2021, England and Wales): SG18 had 30,916 usual residents at the census. ## How SG18 compares Each postcode district against every other postcode district the measure covers. | Measure | SG18 | Rank | Compared with | | --- | --- | --- | --- | | Median sale price | £347,250 | 3rd cheapest | 19 postcode districts, SG · 2025 | | Population | 30,916 | 7th most populated | 19 postcode districts, SG · 2021 | | People in radon Affected Area squares | 18% | 9th fewest people in radon Affected Areas | 19 postcode districts, SG · 2022 | | Gigabit broadband coverage | 91.1% | 6th highest | 19 postcode districts, SG · Jan 2026 | ## Is SG18 safe? What police records show In the 12 months to August 2026, police recorded crimes and anti-social behaviour in SG18 at a rate of 62.2 per 1,000 people. That compares with 73.9 per 1,000 people across the SG postcode area. In August 2026 alone, 185 cases of crime and anti-social behaviour were recorded in SG18. In the 12 months to August 2026, the most common types were violence and sexual offences (651), anti-social behaviour (405) and other crime (334). A year earlier, the recorded crime rate in SG18 was 56.4 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 SG18, neighbourhood by neighbourhood - Deprivation is ranked by neighbourhood, so SG18 has no single figure. Of its 20 neighbourhoods with a rank: - Decile 4: 4 neighbourhoods - Decile 5: 1 neighbourhood - Decile 6: 5 neighbourhoods - Decile 7: 1 neighbourhood - Decile 8: 7 neighbourhoods - Decile 9: 1 neighbourhood - Decile 10 (England’s least deprived 10%): 1 neighbourhood Source: English Indices of Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in England. ## Neighbourhoods in SG18 | Area | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband | | --- | --- | --- | --- | --- | | [Central Bedfordshire 003A](https://openindex.co.uk/central-bedfordshire/neighbourhood/e01017425) | 1,167 | 38.0 per 1,000 | 6 | 90.7% | | [Central Bedfordshire 004A](https://openindex.co.uk/central-bedfordshire/neighbourhood/e01017412) | 1,508 | 35.9 per 1,000 | 4 | 68.8% | | [Central Bedfordshire 004B](https://openindex.co.uk/central-bedfordshire/neighbourhood/e01017422) | 1,652 | 40.1 per 1,000 | 6 | 78.0% | | [Central Bedfordshire 004D](https://openindex.co.uk/central-bedfordshire/neighbourhood/e01017424) | 1,409 | 79.1 per 1,000 | 5 | 27.9% | | [Central Bedfordshire 005A](https://openindex.co.uk/central-bedfordshire/neighbourhood/e01017383) | 1,937 | 38.8 per 1,000 | 8 | 97.4% | | [Central Bedfordshire 005B](https://openindex.co.uk/central-bedfordshire/neighbourhood/e01017384) | 1,627 | 73.2 per 1,000 | 4 | 97.1% | | [Central Bedfordshire 005C](https://openindex.co.uk/central-bedfordshire/neighbourhood/e01017385) | 1,886 | 216.5 per 1,000 | 4 | 82.2% | | [Central Bedfordshire 005D](https://openindex.co.uk/central-bedfordshire/neighbourhood/e01017386) | 1,765 | 48.6 per 1,000 | 6 | 93.7% | | [Central Bedfordshire 005E](https://openindex.co.uk/central-bedfordshire/neighbourhood/e01017387) | 1,264 | 35.0 per 1,000 | 8 | 97.4% | | [Central Bedfordshire 005F](https://openindex.co.uk/central-bedfordshire/neighbourhood/e01017388) | 2,834 | 54.9 per 1,000 | 7 | 97.4% | | [Central Bedfordshire 006A](https://openindex.co.uk/central-bedfordshire/neighbourhood/e01017381) | 1,427 | 112.4 per 1,000 | 9 | 98.6% | | [Central Bedfordshire 006B](https://openindex.co.uk/central-bedfordshire/neighbourhood/e01017382) | 1,509 | 29.8 per 1,000 | 6 | 99.5% | | [Central Bedfordshire 006E](https://openindex.co.uk/central-bedfordshire/neighbourhood/e01033808) | 1,334 | 40.8 per 1,000 | 10 | 97.7% | | [Central Bedfordshire 006F](https://openindex.co.uk/central-bedfordshire/neighbourhood/e01033809) | 1,444 | 32.0 per 1,000 | 8 | 94.4% | | [Central Bedfordshire 006G](https://openindex.co.uk/central-bedfordshire/neighbourhood/e01033810) | 1,420 | 82.0 per 1,000 | 8 | 86.5% | | [Central Bedfordshire 006H](https://openindex.co.uk/central-bedfordshire/neighbourhood/e01033811) | 1,551 | 46.4 per 1,000 | 8 | 98.5% | | [Central Bedfordshire 006I](https://openindex.co.uk/central-bedfordshire/neighbourhood/e01033812) | 1,408 | 40.1 per 1,000 | 8 | 100.0% | | [Central Bedfordshire 006J](https://openindex.co.uk/central-bedfordshire/neighbourhood/e01033813) | 1,134 | 61.9 per 1,000 | 4 | 99.8% | | [Central Bedfordshire 010D](https://openindex.co.uk/central-bedfordshire/neighbourhood/e01017413) | 2,255 | 57.2 per 1,000 | 8 | 98.5% | | [Central Bedfordshire 010E](https://openindex.co.uk/central-bedfordshire/neighbourhood/e01017414) | 1,878 | 41.2 per 1,000 | 6 | 97.5% | ## Your MP - [North Bedfordshire](https://openindex.co.uk/constituency/north-bedfordshire): Richard Fuller (Conservative), MP since July 2024. 88% of the people here. - [Hitchin](https://openindex.co.uk/constituency/hitchin): Alistair Strathern (Labour), MP since July 2024. 12% of the people here. As of 18 October 2026. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API. ## Middle areas in SG18 [Biggleswade East](https://openindex.co.uk/central-bedfordshire/biggleswade-east), [Biggleswade West](https://openindex.co.uk/central-bedfordshire/biggleswade-west), [Blunham, Caldecote & Broom](https://openindex.co.uk/central-bedfordshire/blunham-caldecote-and-broom) ## Postcode sectors in SG18 [SG18 0 (194 postcodes)](https://openindex.co.uk/postcode/sg18-0), [SG18 1 (7 postcodes)](https://openindex.co.uk/postcode/sg18-1), [SG18 8 (312 postcodes)](https://openindex.co.uk/postcode/sg18-8), [SG18 9 (251 postcodes)](https://openindex.co.uk/postcode/sg18-9) ## Council [Central Bedfordshire](https://openindex.co.uk/central-bedfordshire) ## Towns in SG18 [Biggleswade](https://openindex.co.uk/town/biggleswade) ## Postcode districts next to SG18 [MK42](https://openindex.co.uk/postcode/mk42), [MK44](https://openindex.co.uk/postcode/mk44), [MK45](https://openindex.co.uk/postcode/mk45), [SG5](https://openindex.co.uk/postcode/sg5), [SG7](https://openindex.co.uk/postcode/sg7), [SG15](https://openindex.co.uk/postcode/sg15), [SG16](https://openindex.co.uk/postcode/sg16), [SG17](https://openindex.co.uk/postcode/sg17), [SG19](https://openindex.co.uk/postcode/sg19) ## Nearest rail stations [Biggleswade (4.2 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-0.2612,52.0847), [Sandy (5.6 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-0.2812,52.1247) ## More in the SG postcode area [All SG postcode districts](https://openindex.co.uk/postcode/sg), [Every UK postcode area](https://openindex.co.uk/postcode) ## SG18 in brief SG18 is a postcode district covering Biggleswade and Langford, in Central Bedfordshire. About 32,281 people lived in SG18 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £347,250 in 2025 across 572 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 62.2 per 1,000 people in the 12 months to August 2026 (police.uk). The median price paid for a home in SG18 was £347,250 in 2025. SG18 had 30,916 usual residents at the census. About 18% of people in SG18 live in a 1 km square that the radon atlas marks as a radon Affected Area. In SG18, 91.1% of homes and businesses could get gigabit-capable broadband in January 2026. ## About - Type: Postcode district - Code: SG18 - Postcode area: [SG](https://openindex.co.uk/postcode/sg) - Constituency: [North Bedfordshire †](https://openindex.co.uk/constituency/north-bedfordshire) - Council: [Central Bedfordshire †](https://openindex.co.uk/central-bedfordshire) - Area: 95.28 km² - People, mid-2024: 32,281* - Neighbourhoods: 20 - Output areas: 96 * People: worked out by Open Index from neighbourhood estimates, shared out by where people lived at the census (by area in Northern Ireland). This area's edges do not follow neighbourhood edges, so the figure is close but not exact. † Best fit: the constituency, council, region and nation this postcode district mostly lies in. Its edges do not follow theirs. ## Next door [SG19](https://openindex.co.uk/postcode/sg19), [SG17](https://openindex.co.uk/postcode/sg17), [MK44](https://openindex.co.uk/postcode/mk44), [SG7](https://openindex.co.uk/postcode/sg7), [SG5](https://openindex.co.uk/postcode/sg5), [MK45](https://openindex.co.uk/postcode/mk45) ## Latest updates for SG18 - August 2026 house prices published: HM Land Registry and partners · Oct 2026. - September 2026 rent published: ONS private rents · Oct 2026. - Dental practices updated: NHS England · Oct 2026. - Schools updated: Ofsted · Oct 2026. The same figures as JSON: https://openindex.co.uk/v1/places/SG18 ## How to cite Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/sg18, or to one figure with its anchor, https://openindex.co.uk/postcode/sg18#f-house-sales-median-price. Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it. Snapshot 2026.10.9. The HTML page: https://openindex.co.uk/postcode/sg18