Explore SE23 3BY in Lewisham through its map and available local datasets. The outline is an approximate boundary derived from address locations, while the information below distinguishes full-postcode records from statistics covering surrounding official areas. Census 2021 records 17 residents and 6 households at the exact postcode.
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Create a Custom MapCore details from the ONS Postcode Directory. Geography codes identify the official areas containing this postcode.
| Postcode | SE23 3BY |
| Postcode without spaces | SE233BY |
| Status | Active postcode |
| User type | Small user postcode |
| Introduced | January 1980 |
| Directory version | 2026-06 |
| Latitude | 51.4433500 |
| Longitude | -0.0588440 |
| British National Grid | 535,001 E, 173,382 N |
| Country | England |
| Region | London |
| Local authority | Lewisham |
| Output Area (2021) | E00016445 |
| LSOA (2021) | E01003254 |
| MSOA (2021) | E02000673 |
| Electoral ward | E05013722 |
| Westminster constituency | E14001333 |
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.
| Residents | 17 |
| Households | 6 |
| Female residents | 7 |
| Male residents | 10 |
| Residents per household | 2.8 |
A detailed vector map covering a 500 metre radius around the postcode.
Deprivation is published for the postcode's containing Lower Layer Super Output Area, a neighbourhood geography covering more than one postcode.
Open schools and active GP practices in the SE23 postcode district, ordered by straight-line distance where coordinates are available.
Community school
Horniman Drive, London, SE23 3BP
Ages 5–11 · 201 pupils of 210 capacity
10.9% eligible for free school meals
Community school
Honor Oak Road, London, SE23 3SB
Ages 3–11 · 362 pupils of 480 capacity
15.9% eligible for free school meals
Miscellaneous
62-72 Dalmain Road, London, SE23 1AT
Ages 11–17
Academy converter
Perry Vale, Forest Hill, London, SE23 2NE
Ages 3–11 · 206 pupils of 300 capacity
41.0% eligible for free school meals
Voluntary aided school
Dartmouth Road, Forest Hill, London, SE23 3HZ
Ages 3–11 · 185 pupils of 210 capacity
49.2% eligible for free school meals
Community school
Grove Close, Brockley Rise, London, SE23 1AS
Ages 3–11 · 381 pupils of 470 capacity
15.5% eligible for free school meals
Community school
Sunderland Road, Forest Hill, London, SE23 2PX
Ages 3–11 · 202 pupils of 210 capacity
34.4% eligible for free school meals
B
JENNER HEALTH CENTRE 201-203, STANSTEAD ROAD, FOREST HILL, LONDON, SE23 1HU
B
JENNER DENTAL SUITE, 14 ST. GERMAN'S ROAD, LONDON, SE23 1RJ
B
THE JENNER DENTAL SUITE, 14 ST GERMANS ROAD, LONDON, SE23 1RJ
B
THE JENNER DENTAL SUITE, 14 ST. GERMANS ROAD, LONDON, SE23 1RJ
B
JENNER DENTAL CLINIC, 14 ST GERMANS ROAD, LONDON, SE23 1RJ
Companies House records whose registered-office address uses this exact postcode.
Private Limited Company
Incorporated 7 February 2025
43999 - Other specialised construction activities n.e.c.
Police.uk street-level incidents recorded across the postcode's containing LSOA in May 2026.
Lewisham 021A includes SE23 3BY and other nearby postcodes.
| Crime type | Incidents |
|---|---|
| Violence and sexual offences | 5 |
| Anti-social behaviour | 4 |
| Burglary | 3 |
Answers use the geographic scope stated with each dataset above.
SE23 3BY is in Lewisham, England.
The Census 2021 postcode-level dataset records 17 residents at SE23 3BY. This is an exact postcode count.
The deprivation figures describe the containing Lower Layer Super Output Area, not only the individual postcode.
Vector Maps supplies editable UK postcode area, district and sector map files. For a vector or printed map focused on the full SE23 3BY postcode and its approximate address-derived outline, request a custom map.
Explore other full postcodes in the same postcode sector.