Postal Code Finder
Registry / United Kingdom / Postal code prefixes / HA4 /

Postal code HA4 in Ruislip, United Kingdom

Postal code HA4 is mapped to 1 locality record in United Kingdom with administrative hierarchy and coordinates.

Verified data profile for Postal code HA4

Based on 1 records, 1 postal code values and 1 mapped localities. Coordinate coverage is 100.0%.

1
Records
1
Postal identifiers
100.0%
Geocoded
HA4
Example code
Postal code Locality Administrative path Coordinates
HA4 Ruislip England / Greater London 51.5734, -0.4234

Related postal lookups

United Kingdom
country
Postal code prefixes
code_index
HA0
nearby_postal_code · 3 records
HA1
nearby_postal_code · 2 records
HA2
nearby_postal_code · 5 records
HA3
nearby_postal_code · 3 records
HA5
nearby_postal_code · 4 records
HA6
nearby_postal_code · 3 records

How to validate postal code HA4

Treat HA4 as a text value, not a number. Postal identifiers can contain leading zeroes, spaces or letters in other countries, so applications should validate the country and original string together. For this page, the code is valid when it appears with one of the mapped localities below and the administrative path belongs to United Kingdom.

United Kingdom lookup
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Compare this code with neighboring country ranges.

Mapped localities

Ruislip
England / Greater London
51.5734, -0.4234

Common lookup mistakes

A postal code can map to more than one locality record, and the same locality name can appear in different administrative areas. Always compare the country, postal code, place name and region together before treating a match as final.

Coordinates on this page are useful for map previews and approximate area checks. They should be read as locality or postal-area centroids, not as exact delivery addresses. For bulk validation, download the country dataset and keep this canonical URL as the human-readable reference for the code.

Nearby postal code lookups

These neighboring identifiers help compare adjacent code ranges inside United Kingdom. Each link opens a canonical postal-code page with its mapped places and administrative context.

HA0
Alperton
HA1
Greenhill
HA2
Harrow
HA3
Harrow Weald
HA5
Eastcote
HA6
Eastbury
HA7
Stanmore
HA8
Burnt Oak