# KT23

Postcode district covering Great Bookham and Little Bookham, in Mole Valley.

KT23 is a postcode district covering Great Bookham and Little Bookham, in Mole Valley. Median sale price £690,100 in 2025. Recorded crime 51.1 per 1,000 people.

Postcode district. Code KT23. In: [Postcodes](https://openindex.co.uk/postcode) › [KT](https://openindex.co.uk/postcode/kt)

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 KT23 postcode. [How census figures are added up](https://openindex.co.uk/sources/population)

## Key figures

- **Median sale price: £690,100** (2025). The median price paid for a home in KT23 was £690,100 in 2025. 84th 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/kt23#f-house-sales-median-price
- **Population: 11,346** (2021). KT23 had 11,346 usual residents at the census (ONS Census 2021). 797th least 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/kt23#f-population
- **People in radon Affected Area squares: 86%** (2022). About 86% of people in KT23 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/kt23#f-radon-affected-share
- **Gigabit broadband coverage: 87.7%** (January 2026). In KT23, 87.7% 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/kt23#f-gigabit-coverage

## On the map

- [Radon Affected Area by postcode district](https://openindex.co.uk/map/radon-affected-areas?place=KT23) (Worked out by Open Index · 2022): About 86% of people in KT23 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=KT23) (Worked out by Open Index · 2025): 152 homes were sold in KT23 in 2025.
- [Crime and ASB by postcode district](https://openindex.co.uk/map/recorded-crime?place=KT23) (Police recorded crime and outcomes (data.police.uk) · August 2026): Crime and anti-social behaviour for KT23.
- [Population by postcode district](https://openindex.co.uk/map/population?place=KT23) (Census 2021, England and Wales): KT23 had 11,346 usual residents at the census.

## How KT23 compares

Each postcode district against every other postcode district the measure covers.

| Measure | KT23 | Rank | Compared with |
| --- | --- | --- | --- |
| Median sale price | £690,100 | 7th most expensive | 24 postcode districts, KT · 2025 |
| Population | 11,346 | 3rd least populated | 24 postcode districts, KT · 2021 |
| People in radon Affected Area squares | 86% | 3rd most people in radon Affected Areas | 24 postcode districts, KT · 2022 |
| Gigabit broadband coverage | 87.7% | 8th lowest | 24 postcode districts, KT · Jan 2026 |

## Is KT23 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in KT23 at a rate of 51.1 per 1,000 people.
That compares with 73.8 per 1,000 people across the KT postcode area.
In August 2026 alone, 40 cases of crime and anti-social behaviour were recorded in KT23.
In the 12 months to August 2026, the most common types were violence and sexual offences (207), other crime (120) and anti-social behaviour (107).
A year earlier, the recorded crime rate in KT23 was 47.1 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 KT23, neighbourhood by neighbourhood

- Deprivation is ranked by neighbourhood, so KT23 has no single figure. Of its 9 neighbourhoods with a rank:
- Decile 6: 2 neighbourhoods
- Decile 7: 1 neighbourhood
- Decile 8: 2 neighbourhoods
- Decile 10 (England’s least deprived 10%): 4 neighbourhoods

Source: English Indices of Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in England.

## Neighbourhoods in KT23

| Area | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
| --- | --- | --- | --- | --- |
| [Guildford 003G](https://openindex.co.uk/guildford/neighbourhood/e01030447) | 1,346 | 36.0 per 1,000 | 8 | 73.7% |
| [Mole Valley 006A](https://openindex.co.uk/mole-valley/neighbourhood/e01030516) | 1,323 | 90.2 per 1,000 | 6 | 76.1% |
| [Mole Valley 006B](https://openindex.co.uk/mole-valley/neighbourhood/e01030517) | 1,656 | 33.7 per 1,000 | 10 | 80.6% |
| [Mole Valley 006C](https://openindex.co.uk/mole-valley/neighbourhood/e01030518) | 1,388 | 23.6 per 1,000 | 10 | 97.8% |
| [Mole Valley 006D](https://openindex.co.uk/mole-valley/neighbourhood/e01030519) | 1,602 | 50.5 per 1,000 | 7 | 93.6% |
| [Mole Valley 007A](https://openindex.co.uk/mole-valley/neighbourhood/e01030520) | 1,384 | 83.9 per 1,000 | 6 | 89.4% |
| [Mole Valley 007B](https://openindex.co.uk/mole-valley/neighbourhood/e01030521) | 1,652 | 65.2 per 1,000 | 8 | 84.9% |
| [Mole Valley 007C](https://openindex.co.uk/mole-valley/neighbourhood/e01030522) | 1,418 | 14.7 per 1,000 | 10 | 95.0% |
| [Mole Valley 007D](https://openindex.co.uk/mole-valley/neighbourhood/e01030523) | 1,224 | 47.5 per 1,000 | 10 | 95.4% |

## Your MP

- [Dorking and Horley](https://openindex.co.uk/constituency/dorking-and-horley): Chris Coghlan (Liberal Democrat), MP since July 2024. 97% of the people here.
- [Guildford](https://openindex.co.uk/constituency/guildford): Zöe Franklin (Liberal Democrat), MP since July 2024. 2.4% of the people here.
- [Epsom and Ewell](https://openindex.co.uk/constituency/epsom-and-ewell): Helen Maguire (Liberal Democrat), MP since July 2024. 0.3% 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 KT23

[Bookham North](https://openindex.co.uk/mole-valley/bookham-north), [Bookham South](https://openindex.co.uk/mole-valley/bookham-south)

## Postcode sectors in KT23

[KT23 3 (176 postcodes)](https://openindex.co.uk/postcode/kt23-3), [KT23 4 (200 postcodes)](https://openindex.co.uk/postcode/kt23-4)

## Council

[Mole Valley](https://openindex.co.uk/mole-valley)

## Towns in KT23

[Great Bookham and Fetcham](https://openindex.co.uk/town/great-bookham-and-fetcham)

## Postcode districts next to KT23

[KT11](https://openindex.co.uk/postcode/kt11), [KT22](https://openindex.co.uk/postcode/kt22), [KT24](https://openindex.co.uk/postcode/kt24), [RH5](https://openindex.co.uk/postcode/rh5)

## Nearest rail stations

[Bookham (2.5 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-0.3840,51.2887), [Box Hill and Westhumble (3.4 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-0.3285,51.2540), [Dorking West (4.1 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-0.3400,51.2362), [Effingham Junction (4.2 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-0.4200,51.2915)

## More in the KT postcode area

[All KT postcode districts](https://openindex.co.uk/postcode/kt), [Every UK postcode area](https://openindex.co.uk/postcode)

## KT23 in brief

KT23 is a postcode district covering Great Bookham and Little Bookham, in Mole Valley.
About 11,477 people lived in KT23 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £690,100 in 2025 across 152 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 51.1 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in KT23 was £690,100 in 2025.
KT23 had 11,346 usual residents at the census.
About 86% of people in KT23 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In KT23, 87.7% of homes and businesses could get gigabit-capable broadband in January 2026.

## About

- Type: Postcode district
- Code: KT23
- Postcode area: [KT](https://openindex.co.uk/postcode/kt)
- Constituency: [Dorking and Horley †](https://openindex.co.uk/constituency/dorking-and-horley)
- Council: [Mole Valley †](https://openindex.co.uk/mole-valley)
- Area: 10.89 km²
- People, mid-2024: 11,477*
- Neighbourhoods: 9
- Output areas: 36

* 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

[KT22](https://openindex.co.uk/postcode/kt22), [KT24](https://openindex.co.uk/postcode/kt24), [RH5](https://openindex.co.uk/postcode/rh5), [KT11](https://openindex.co.uk/postcode/kt11)

## Latest updates for KT23

- 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/KT23

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/kt23, or to one figure with its anchor, https://openindex.co.uk/postcode/kt23#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/kt23