Postcode BN42
Southwick · West Sussex, England
BN42 is the postcode of Southwick in West Sussex, England, United Kingdom. This list covers outward codes — the first half of a UK postcode, such as M9 or BN91 — not full postcodes.
- Postcode
- BN42
- County
- West Sussex
- Country
- England
- Country
- United Kingdom
Place with postcode BN42
| Place | County | Location |
|---|---|---|
| Southwick | West Sussex | 50.837, -0.238 |
Near London
The nearest major city is London, about 75 km away.
Nearby postcodes
Frequently asked questions
Which places use postcode BN42?
Southwick.
Which county and country is BN42 in?
West Sussex, England, United Kingdom.
What is the nearest major city to BN42?
London, about 75 km away.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.