BN42 postcode district: Southwick and around
BN42 is a postcode district mostly in West Sussex, with 219 postcodes in use in 1 sector. It has postcodes in Southwick and Brighton and Hove. It is split between 2 councils: Adur (218 postcodes) and Brighton and Hove (1). 218 are in West Sussex. ONS lists no county for the other 1.
- Postcodes in use
- 219
- Sectors
- 1
- Councils
- 2 councils
- Places
- 2 places
Source: ONS Postcode Directory, August 2026, loaded 20 October 2026.
Every postcode in BN42, by gigabit broadband
- No home or business can get gigabit: 4
- Some can get gigabit: 19
- Every home and business can get gigabit: 192
- Ofcom gives no figure: 4
Of the 219 postcodes in BN42 that ONS places, 4 have no home or business that can get gigabit, 19 have some that can, 192 can all get it and 4 have no Ofcom figure.
Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. No boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.
The middle of its postcodes: latitude 50.8376, longitude -0.2347. Open this area on OpenStreetMap
Sources: ONS Postcode Directory, August 2026, loaded 20 October 2026; Ofcom Connected Nations, Connected Nations, Spring 2026; roads, rivers and built-up areas: Ordnance Survey open maps. Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre.
Further out, not drawn
This postcode lies well apart from the rest, so the map is drawn without it to show the rest closer; it is in every count.
What broadband can you get in BN42?
Ofcom reports on 215 of the 219 postcodes in BN42. At 192 of them every home and business can get gigabit broadband.
Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.
Check one address on Ofcom's checkerSource: Ofcom Connected Nations, Connected Nations, Spring 2026, data for January 2026.
Is BN42 at risk of flooding?
7 of the 219 postcodes in BN42 have a home or business in an area at risk of flooding from rivers or the sea, the Environment Agency says. At those, it puts 10 homes and businesses in an area at high or medium risk.
High: 3.3% or more a year (1 in 30). Medium: 1% to 3.3% a year. Low: 0.1% to 1% a year. Very low: under 0.1% a year (1 in 1,000). Each band is the chance of flooding in any one year.
Homes and businesses in an area at risk of flooding from rivers or the sea, as the Environment Agency counts them, added up over the postcodes. It is for the land, not each building, and leaves out surface water, groundwater and sewers. Each postcode page has its own figures and its flood warning areas.
Source: Environment Agency flood risk, published 6 July 2026.
What do homes sell for in BN42?
Homes in BN42 sold for a typical £435,000 in the 12 months to September 2026, across 108 sales, HM Land Registry's figures show. The 12 months before gave £430,000 from 145 sales: not a change larger than chance would explain, given which homes happened to sell.
- Detached £476,000 17 sales
- Semi-detached £472,500 54 sales
- Terraced £411,250 24 sales
- Flat or maisonette £265,000 13 sales
Each bar is that kind's typical price, against the most expensive kind here.
Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.
Source: HM Land Registry Price Paid Data, files dated 28 October 2026.
Postcodes in BN42
Pick a sector, then a postcode. A sector is the district plus the next digit.
UK postcode format explainedPlaces in BN42
Towns and villages with postcodes in BN42, and how many each has here.
Who covers BN42
How many of the district's postcodes in use fall under each council, constituency and police force area.
Councils
What council am I in?Constituencies
- East Worthing and Shoreham218
- Hove and Portslade1
Police force areas
- Sussex219
Next to BN42
"Next to" is by number: the districts before and after BN42 in the BN area.
Check a postcode
Where the facts on this page come from
- Office for National Statistics: ONS Postcode Directory
- Ofcom Connected Nations
- Environment Agency flood risk
- HM Land Registry Price Paid Data
Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0.
Licence: Open Government Licence v3.0.
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