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UK postcodes
SM
SM4
SM4 4

SM4 4

SM4 postcode district

Updated September 2026

Sector overview

Postcode units: 255
Coordinate coverage: 100%

Part of the SM4 postcode district.

Postcode units

251–255 of 255 units

SM4 4ZS
SM4 4ZT
SM4 4ZU
SM4 4ZW
SM4 4ZX

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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 SM4 sectors

SM4 6 211 current
SM4 5 165 current
SM4 9 27 current

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