Use this guide to understand SE23 3BN in Lewisham. Start with the interactive location and approximate postcode outline, then browse the available facts and local-area indicators. Labels show which figures relate to the exact postcode and which cover a larger geography. Census 2021 records 31 residents and 13 households at the exact postcode.
Average sold price£1,260,6673 exact-postcode transactions
IMD decile6 of 10Containing LSOA · 2025
Vector and Interactive Postcode Maps for SE23 3BN
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Ready-made vector files cover postcode areas, districts and sectors. For a map focused on the full SE23 3BN postcode or its approximate address-derived outline, ask us about custom digital and printed options.
Core details from the ONS Postcode Directory. Geography codes identify the official areas containing this postcode.
Exact postcode record
Postcode details
Postcode
SE23 3BN
Postcode without spaces
SE233BN
Status
Active postcode
User type
Small user postcode
Introduced
January 1980
Directory version
2026-06
Latitude
51.4459500
Longitude
-0.0572950
British National Grid
535,101 E, 173,674 N
Containing official geographies
Country
England
Region
London
Local authority
Lewisham
Output Area (2021)
E00016452
LSOA (2021)
E01003254
MSOA (2021)
E02000673
Electoral ward
E05013722
Westminster constituency
E14001333
The red outline is an approximate convex hull generated from geocoded property locations and offset outwards by about 25 metres; it is not an official postcode boundary.
Ward and Constituency
The postcode is assigned to these official political geographies. Names and election results will be added when the ElectionMaps datasets are connected.
These Census figures are matched directly to the full postcode, rather than inferred from a wider neighbourhood.
Exact postcode · Census 2021
Residents
31
Households
13
Female residents
16
Male residents
15
Residents per household
2.4
Counts are from the postcode-level Census population and household datasets. They apply to the exact postcode. Detailed local demographic profiles will be labelled separately when Output Area data is added.
SE23 3BN Vector Map
A detailed vector map covering a 500 metre radius around the postcode.
500 metre radius
Creating the SE23 3BN mapThe vector map preview will appear here automatically.
Local Deprivation
Deprivation is published for the postcode's containing Lower Layer Super Output Area, a neighbourhood geography covering more than one postcode.
The search is currently limited to records whose own postcode begins with SE23. Distances are approximate straight-line distances, not travel distances.
Companies Registered at SE23 3BN
Companies House records whose registered-office address uses this exact postcode.
Exact registered postcode
Registered companies3All supplied statuses
Active companies3Companies House status
Active · 17026148
TRUST SIDEWAYS LIMITED
Private Limited Company
Incorporated 11 February 2026
82990 - Other business support service activities n.e.c.
A registered office can be an accountant, agent or correspondence address. A company listed here does not necessarily trade from this postcode.
Crime in the Local LSOA
Police.uk street-level incidents recorded across the postcode's containing LSOA in May 2026.
Containing LSOA · E01003254
12 recorded incidents
Lewisham 021A includes SE23 3BN and other nearby postcodes.
Crime type
Incidents
Violence and sexual offences
5
Anti-social behaviour
4
Burglary
3
Crime figures apply to the whole Lewisham 021A LSOA, not only to SE23 3BN. Locations may be anonymised by the source.
SE23 3BN Questions
Answers use the geographic scope stated with each dataset above.
Where is the SE23 3BN postcode?
SE23 3BN is in Lewisham, England.
How many people live in SE23 3BN?
The Census 2021 postcode-level dataset records 31 residents at SE23 3BN. This is an exact postcode count.
What do the deprivation figures for SE23 3BN describe?
The deprivation figures describe the containing Lower Layer Super Output Area, not only the individual postcode.
Are the property prices for the exact postcode?
Yes. The sold-price records shown on this page are Land Registry transactions matched to the full SE23 3BN postcode.
Can I buy a vector map of SE23 3BN?
Vector Maps supplies editable UK postcode area, district and sector map files. For a vector or printed map focused on the full SE23 3BN postcode and its approximate address-derived outline, request a custom map.
Other Postcodes in SE23 3
Explore other full postcodes in the same postcode sector.