OL1 1 postcode sector in the OL1 district

OL1 1 is a sector of the OL1 district: every postcode that starts OL1 1. It has 100 postcodes in use, 18 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 OL1 1 sector, by flood risk

Map of every postcode in the OL1 1 sector, by flood risk Of the 100 postcodes in the OL1 1 sector that ONS places, 100 are not on the Environment Agency's at-risk list. Places named: Oldham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A62A627 OL1 1AA: not on the flood risk listOL1 1AD: not on the flood risk listOL1 1AL: not on the flood risk listOL1 1AN: not on the flood risk listOL1 1AP: not on the flood risk listOL1 1BA: not on the flood risk listOL1 1BB: not on the flood risk listOL1 1BD: not on the flood risk listOL1 1BE: not on the flood risk listOL1 1BT: not on the flood risk listOL1 1BU: not on the flood risk listOL1 1DE: not on the flood risk listOL1 1DJ: not on the flood risk listOL1 1DU: not on the flood risk listOL1 1DZ: not on the flood risk listOL1 1EA: not on the flood risk listOL1 1ED: not on the flood risk listOL1 1EG: not on the flood risk listOL1 1EN: not on the flood risk listOL1 1EP: not on the flood risk listOL1 1ET: not on the flood risk listOL1 1HA: not on the flood risk listOL1 1HD: not on the flood risk listOL1 1HH: not on the flood risk listOL1 1HP: not on the flood risk listOL1 1HU: not on the flood risk listOL1 1HY: not on the flood risk listOL1 1JA: not on the flood risk listOL1 1JD: not on the flood risk listOL1 1JG: not on the flood risk listOL1 1JZ: not on the flood risk listOL1 1LB: not on the flood risk listOL1 1LE: not on the flood risk listOL1 1LF: not on the flood risk listOL1 1LH: not on the flood risk listOL1 1LP: not on the flood risk listOL1 1LS: not on the flood risk listOL1 1LT: not on the flood risk listOL1 1LU: not on the flood risk listOL1 1LW: not on the flood risk listOL1 1LX: not on the flood risk listOL1 1NG: not on the flood risk listOL1 1NH: not on the flood risk listOL1 1NJ: not on the flood risk listOL1 1NL: not on the flood risk listOL1 1NN: not on the flood risk listOL1 1NQ: not on the flood risk listOL1 1NR: not on the flood risk listOL1 1NT: not on the flood risk listOL1 1NW: not on the flood risk listOL1 1NZ: not on the flood risk listOL1 1PF: not on the flood risk listOL1 1PL: not on the flood risk listOL1 1PS: not on the flood risk listOL1 1QG: not on the flood risk listOL1 1QH: not on the flood risk listOL1 1QN: not on the flood risk listOL1 1QT: not on the flood risk listOL1 1QU: not on the flood risk listOL1 1QX: not on the flood risk listOL1 1RA: not on the flood risk listOL1 1RD: not on the flood risk listOL1 1RT: not on the flood risk listOL1 1RU: not on the flood risk listOL1 1SA: not on the flood risk listOL1 1SB: not on the flood risk listOL1 1SE: not on the flood risk listOL1 1SG: not on the flood risk listOL1 1SH: not on the flood risk listOL1 1SJ: not on the flood risk listOL1 1SN: not on the flood risk listOL1 1SP: not on the flood risk listOL1 1SQ: not on the flood risk listOL1 1SR: not on the flood risk listOL1 1ST: not on the flood risk listOL1 1SU: not on the flood risk listOL1 1TA: not on the flood risk listOL1 1TD: not on the flood risk listOL1 1TE: not on the flood risk listOL1 1TJ: not on the flood risk listOL1 1TT: not on the flood risk listOL1 1TU: not on the flood risk listOL1 1TX: not on the flood risk listOL1 1TZ: not on the flood risk listOL1 1UA: not on the flood risk listOL1 1UT: not on the flood risk listOL1 1XD: not on the flood risk list Oldham Map of every postcode in the OL1 1 sector, by flood risk Of the 100 postcodes in the OL1 1 sector that ONS places, 100 are not on the Environment Agency's at-risk list. Places named: Oldham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Oldham
  • 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: 100

Of the 100 postcodes in the OL1 1 sector that ONS places, 100 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.

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 do homes sell for in OL1 1?

HM Land Registry records one sale of homes in OL1 1 in the 12 months to August 2026: too few to give a typical price.

  • Flat or maisonette 1 sale, too few to price

Standard sales of homes at market value at the postcodes that start OL1 1. A typical price is the median, the middle sale, given from 5 sales or more.

How we work this out: house prices by postcode

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 OL1 1

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.

OL1 1AAOL1 1ADOL1 1ALOL1 1ANOL1 1APOL1 1AQOL1 1ASOL1 1BAOL1 1BBOL1 1BDOL1 1BEOL1 1BTOL1 1BUOL1 1DEOL1 1DJOL1 1DUOL1 1DZOL1 1EAOL1 1EDOL1 1EGOL1 1ENOL1 1EPOL1 1EROL1 1ETOL1 1HAOL1 1HDOL1 1HEOL1 1HHOL1 1HPOL1 1HUOL1 1HYOL1 1JAOL1 1JDOL1 1JGOL1 1JZOL1 1LBOL1 1LEOL1 1LFOL1 1LHOL1 1LPOL1 1LSOL1 1LTOL1 1LUOL1 1LWOL1 1LXOL1 1NGOL1 1NHOL1 1NJOL1 1NLOL1 1NNOL1 1NQOL1 1NROL1 1NTOL1 1NWOL1 1NZOL1 1PFOL1 1PLOL1 1PSOL1 1QGOL1 1QHOL1 1QJOL1 1QNOL1 1QSOL1 1QTOL1 1QUOL1 1QXOL1 1RAOL1 1RDOL1 1RTOL1 1RUOL1 1SAOL1 1SBOL1 1SEOL1 1SGOL1 1SHOL1 1SJOL1 1SNOL1 1SPOL1 1SQOL1 1SROL1 1STOL1 1SUOL1 1TAOL1 1TDOL1 1TEOL1 1TJOL1 1TTOL1 1TUOL1 1TXOL1 1TZOL1 1UAOL1 1UHOL1 1UQOL1 1UTOL1 1WTOL1 1XDOL1 1XEOL1 1XFOL1 1XJOL1 1XY

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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