BD1 9 postcode sector in the BD1 district

BD1 9 is a sector of the BD1 district: every postcode that starts BD1 9. It has 66 postcodes in use, 34 of them large-user postcodes. A large-user postcode is one Royal Mail gives to a single address that gets a lot of mail.

Not sure what a sector is? UK postcode format explained.

Every postcode in the BD1 9 sector, by flood risk

Map of every postcode in the BD1 9 sector, by flood risk Of the 66 postcodes in the BD1 9 sector that ONS places, 1 have a home or business at high risk, 1 are at medium risk at worst and 64 are not on the Environment Agency's at-risk list. Places named: City, Bolton & Undercliffe. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A650A6181A6037 BD1 9AB: not on the flood risk listBD1 9ZZ: not on the flood risk listBD1 9SG: high flood risk CityBolton & Undercliffe Map of every postcode in the BD1 9 sector, by flood risk Of the 66 postcodes in the BD1 9 sector that ONS places, 1 have a home or business at high risk, 1 are at medium risk at worst and 64 are not on the Environment Agency's at-risk list. Places named: City, Bolton & Undercliffe. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A650A6181 CityBolton & Undercliffe
  • A home or business at high risk: 1
  • At medium risk at worst: 1
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 64

Of the 66 postcodes in the BD1 9 sector that ONS places, 1 have a home or business at high risk, 1 are at medium risk at worst and 64 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.

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

The postcodes at high risk

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

BD1 9SG14 at high risk

Postcodes in BD1 9

Pick a postcode to see its council and MP, broadband, flood risk, what homes sell for, council tax, the nearest schools and stations, and crime around it.

BD1 9ABBD1 9AEBD1 9AQBD1 9BRBD1 9EBBD1 9ELBD1 9FABD1 9FEBD1 9FSBD1 9FWBD1 9HBBD1 9HDBD1 9HEBD1 9HLBD1 9JGBD1 9JJBD1 9LABD1 9LBBD1 9LDBD1 9LEBD1 9NJBD1 9NQBD1 9NRBD1 9NZBD1 9PGBD1 9PXBD1 9SBBD1 9SDBD1 9SEBD1 9SFBD1 9SGBD1 9SHBD1 9SJBD1 9SLBD1 9SNBD1 9SPBD1 9SQBD1 9SRBD1 9SSBD1 9STBD1 9SUBD1 9SWBD1 9SXBD1 9SYBD1 9SZBD1 9TABD1 9TBBD1 9TDBD1 9TEBD1 9TFBD1 9TGBD1 9THBD1 9TJBD1 9TLBD1 9TNBD1 9TPBD1 9TQBD1 9TRBD1 9TSBD1 9TTBD1 9TUBD1 9TWBD1 9WJBD1 9XUBD1 9YNBD1 9ZZ

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed. See all our data sources

What council am I in? The council, borough or local authority for a postcode, and the county council where there is one. What ward am I in? The ward for a postcode, with its council, constituency and parish.

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