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UK postcodes
SL
SL4
SL4 1

SL4 1

SL4 postcode district

Updated September 2026

Sector overview

Postcode units: 341
Coordinate coverage: 100%

Part of the SL4 postcode district.

Postcode units

301–341 of 341 units

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Map centre

Centred on the average coordinates of published units. This is not a sector boundary.

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Other SL4 sectors

SL4 4 294 current
SL4 5 260 current
SL4 3 238 current
SL4 2 216 current
SL4 6 177 current
SL4 9 33 current

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