What does an SL60 postcode tell you?

That the address lies in the SL60 district of the SL (Slough) postcode area, and the place OS Open Names most often lists first for its postcodes is Maidenhead. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 30 live postcodes.

SL60 postcode district

SL60, in the SL (Slough) postcode area, has 30 live and 240 terminated postcodes in the ONS Postcode Directory of August 2026, and OS Open Names files 1 road under it.

postcode area	SL (Slough)
live postcodes	30
terminated postcodes	240
sectors	1
roads listed	1
centroid	51.51855, -0.71478
directory release	2026-08

Postcodes and sectors

30 of the district's 270 postcodes are live in the ONS Postcode Directory of August 2026. A postcode directory says whether a code is in use, never who is there. The live postcodes centre on 51.51855, -0.71478, which locates the district, not a building.

sector	live	terminated
SL60 1	30	240

Places OS Open Names lists for SL60

Maidenhead
Windsor and Maidenhead
South East

Roads filed under SL60

Named roads first, then numbered ones. A road is filed under one district even where it runs through several, so a street missing here may be listed under a neighbouring district — which is why the address lookup never calls a British street absent. Great Britain has no open register of buildings, so a listed road never means a building on it exists.

Howarth Road

Check an address in SL60

The same road list through the API, from the outward code alone:

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=SL60" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about SL60

What does an SL60 postcode tell you?: That the address lies in the SL60 district of the SL (Slough) postcode area, and the place OS Open Names most often lists first for its postcodes is Maidenhead. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 30 live postcodes.

Where the counts come from

ons-postcode-directory · version 2026-08 · Contains ONS, OS and Royal Mail data © Crown copyright and database right 2026, Open Government Licence v3.0. Northern Ireland postcodes are excluded: their reuse needs a Land & Property Services licence.
os-open-names · version 2026-11-01 · Contains OS data © Crown copyright and database right 2026, Open Government Licence v3.0.
uk-companies-house · version 2026-10-01 · Companies House free company data product, Open Government Licence v3.0

What each figure means, and what a district page never says, is set out in Reading a British postcode district page; the glossary defines a postcode district, a postcode area, a postcode directory and a street register.

Data synced on 2026-11-01: the newest version among the datasets listed above.

Districts nearest SL60

SL61.2 km
SL16.4 km
SL86.7 km
SL77.7 km
SL47.7 km
SL27.8 km
HP1010.1 km
RG1010.4 km
RG4210.5 km
HP911.4 km
SL311.5 km
HP1111.9 km
Every district
How a British address is written
Check any address

distance between the districts' centroids

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