What does a BN51 postcode tell you?

That the address lies in the BN51 district of the BN (Brighton) postcode area, and the place OS Open Names most often lists first for its postcodes is Brighton and Hove. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 9 live postcodes.

BN51 postcode district

BN51, in the BN (Brighton) postcode area, has 9 live and 102 terminated postcodes in the ONS Postcode Directory of August 2026, and OS Open Names files no road under it.

postcode area	BN (Brighton)
live postcodes	9
terminated postcodes	102
sectors	1
roads listed	0
centroid	50.80482, -0.05865
directory release	2026-08

Postcodes and sectors

9 of the district's 111 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 50.80482, -0.05865, which locates the district, not a building.

sector	live	terminated
BN51 9	9	102

Places OS Open Names lists for BN51

Brighton and Hove
The City of Brighton and Hove
South East

Roads filed under BN51

OS Open Names files no road under BN51, so a street here cannot be confirmed from the register and the lookup answers about the postcode alone.

Check an address in BN51

Common questions about BN51

What does a BN51 postcode tell you?: That the address lies in the BN51 district of the BN (Brighton) postcode area, and the place OS Open Names most often lists first for its postcodes is Brighton and Hove. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 9 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 BN51

BN23.7 km
BN104.3 km
BN17.1 km
BN97.7 km
BN39.0 km
BN79.0 km
BN4111.9 km
BN2512.2 km
BN4212.9 km
BN4513.8 km
BN814.7 km
BN4315.0 km
Every district
How a British address is written
Check any address

distance between the districts' centroids

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