BN45 postcode district: West Sussex

BN45 is a postcode district in West Sussex, with 42 postcodes in use in 1 sector. Its council is Mid Sussex.

Postcodes in use
42
Sectors
1
Council
Mid Sussex
Places
None listed

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in BN45, by flood risk

Map of every postcode in BN45, by flood risk Of the 42 postcodes in BN45 that ONS places, 42 are not on the Environment Agency's at-risk list. Places named: Downland Villages. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A281A273 BN45 7AA: not on the flood risk listBN45 7AB: not on the flood risk listBN45 7AD: not on the flood risk listBN45 7AE: not on the flood risk listBN45 7AF: not on the flood risk listBN45 7AG: not on the flood risk listBN45 7AH: not on the flood risk listBN45 7AJ: not on the flood risk listBN45 7AL: not on the flood risk listBN45 7AN: not on the flood risk listBN45 7AP: not on the flood risk listBN45 7AQ: not on the flood risk listBN45 7AR: not on the flood risk listBN45 7AT: not on the flood risk listBN45 7AU: not on the flood risk listBN45 7AW: not on the flood risk listBN45 7AY: not on the flood risk listBN45 7AZ: not on the flood risk listBN45 7BA: not on the flood risk listBN45 7BB: not on the flood risk listBN45 7BH: not on the flood risk listBN45 7BJ: not on the flood risk listBN45 7BN: not on the flood risk listBN45 7DA: not on the flood risk listBN45 7DB: not on the flood risk listBN45 7DD: not on the flood risk listBN45 7DE: not on the flood risk listBN45 7EA: not on the flood risk listBN45 7EB: not on the flood risk listBN45 7ED: not on the flood risk listBN45 7EE: not on the flood risk listBN45 7EG: not on the flood risk listBN45 7FA: not on the flood risk listBN45 7FB: not on the flood risk listBN45 7FE: not on the flood risk listBN45 7FF: not on the flood risk listBN45 7FH: not on the flood risk listBN45 7FJ: not on the flood risk listBN45 7FN: not on the flood risk listBN45 7FQ: not on the flood risk listBN45 7FR: not on the flood risk list Downland Villages Map of every postcode in BN45, by flood risk Of the 42 postcodes in BN45 that ONS places, 42 are not on the Environment Agency's at-risk list. Places named: Downland Villages. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. Downland Villages
  • A home or business at high risk: 0
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 42

Of the 42 postcodes in BN45 that ONS places, 42 are not on the Environment Agency's at-risk list.

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. Names in italics are council wards: we hold no town or village names here.

The middle of its postcodes: latitude 50.8967, longitude -0.1907. Open this area on OpenStreetMap

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; flood risk: Environment Agency, published 6 July 2026; roads, rivers and built-up areas: 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. How we use them

What broadband can you get in BN45?

Ofcom reports on 42 of the 42 postcodes in BN45. At 25 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit25 of 42
Postcodes where every home can get superfast34 of 42

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 checker

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

Is BN45 at risk of flooding?

None of the 42 postcodes in BN45 is on the Environment Agency's list of postcodes with a home or business in an area at risk of flooding from rivers or the sea.

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, Risk of Flooding from Rivers and Sea (postcodes in areas at risk), published 6 July 2026, Open Government Licence v3.0. How we use it

What do homes sell for in BN45?

Homes in BN45 sold for a typical £487,500 in the 12 months to August 2026, across 6 sales, down 36.7% on the 12 months before, HM Land Registry's figures show.

£487,500 typical price, the 12 months to August 2026
£770,000 12 months to August 2025
▼ down 36.7% on the 12 months before
  • Detached 3 sales, too few to price
  • Semi-detached 3 sales, too few to price

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 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. How we use it

Postcodes in BN45

Pick a sector, then a postcode. A sector is the district plus the next digit.

BN45 742 postcodes
UK postcode format explained

Places in BN45

We list no town or village for BN45. A place gets a page here only when enough postcodes are in one: a town or village here is a built-up area named by the Office for National Statistics in England and Wales, or a census locality named by National Records of Scotland. Every BN45 postcode is here, under its sector above.

Who covers BN45

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

  • Mid Sussex42

Police force areas

  • Sussex42

Next to BN45

BN44 postcode district BN50 postcode district All BN districts

"Next to" is by number: the districts before and after BN45 in the BN area.

Check a postcode

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