CH1 1 postcode sector in the CH1 district

CH1 1 is a sector of the CH1 district: every postcode that starts CH1 1. It has 92 postcodes in use, 20 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 CH1 1 sector, by flood risk

Map of every postcode in the CH1 1 sector, by flood risk Of the 92 postcodes in the CH1 1 sector that ONS places, 4 have a home or business at high risk, 2 are at low risk at worst, 1 are at very low risk only and 85 are not on the Environment Agency's at-risk list. Places named: Chester City & the Garden Quarter. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. CH1 1AB: not on the flood risk listCH1 1AF: not on the flood risk listCH1 1AG: not on the flood risk listCH1 1DA: not on the flood risk listCH1 1DD: not on the flood risk listCH1 1DE: not on the flood risk listCH1 1DF: not on the flood risk listCH1 1EA: not on the flood risk listCH1 1ED: not on the flood risk listCH1 1EE: not on the flood risk listCH1 1EF: not on the flood risk listCH1 1EL: not on the flood risk listCH1 1ER: not on the flood risk listCH1 1ES: not on the flood risk listCH1 1HA: not on the flood risk listCH1 1HB: not on the flood risk listCH1 1HD: not on the flood risk listCH1 1HE: not on the flood risk listCH1 1HG: not on the flood risk listCH1 1HH: not on the flood risk listCH1 1HL: not on the flood risk listCH1 1HN: not on the flood risk listCH1 1HP: not on the flood risk listCH1 1HT: not on the flood risk listCH1 1JG: not on the flood risk listCH1 1JT: not on the flood risk listCH1 1LB: not on the flood risk listCH1 1LD: not on the flood risk listCH1 1LE: not on the flood risk listCH1 1LF: not on the flood risk listCH1 1LG: not on the flood risk listCH1 1LH: not on the flood risk listCH1 1LN: not on the flood risk listCH1 1LQ: not on the flood risk listCH1 1LT: not on the flood risk listCH1 1NA: not on the flood risk listCH1 1NE: not on the flood risk listCH1 1NG: not on the flood risk listCH1 1NJ: not on the flood risk listCH1 1NL: not on the flood risk listCH1 1NN: not on the flood risk listCH1 1NQ: not on the flood risk listCH1 1NW: not on the flood risk listCH1 1NZ: not on the flood risk listCH1 1PD: not on the flood risk listCH1 1PP: not on the flood risk listCH1 1PW: not on the flood risk listCH1 1QE: not on the flood risk listCH1 1QG: not on the flood risk listCH1 1QJ: not on the flood risk listCH1 1QL: not on the flood risk listCH1 1QN: not on the flood risk listCH1 1QP: not on the flood risk listCH1 1QS: not on the flood risk listCH1 1QX: not on the flood risk listCH1 1QY: not on the flood risk listCH1 1QZ: not on the flood risk listCH1 1RA: not on the flood risk listCH1 1RD: not on the flood risk listCH1 1RE: not on the flood risk listCH1 1RF: not on the flood risk listCH1 1RG: not on the flood risk listCH1 1RH: not on the flood risk listCH1 1RJ: not on the flood risk listCH1 1RL: not on the flood risk listCH1 1RN: not on the flood risk listCH1 1RP: not on the flood risk listCH1 1RQ: not on the flood risk listCH1 1RR: not on the flood risk listCH1 1RS: not on the flood risk listCH1 1RT: not on the flood risk listCH1 1RU: not on the flood risk listCH1 1RW: not on the flood risk listCH1 1RX: not on the flood risk listCH1 1RY: not on the flood risk listCH1 1RZ: not on the flood risk listCH1 1SA: not on the flood risk listCH1 1SE: not on the flood risk listCH1 1SF: not on the flood risk listCH1 1SG: not on the flood risk listCH1 1SH: not on the flood risk listCH1 1SN: not on the flood risk listCH1 1XG: not on the flood risk listCH1 1XP: not on the flood risk listCH1 1YQ: not on the flood risk listCH1 1SZ: very low flood risk onlyCH1 1HF: low flood risk at worstCH1 1HJ: low flood risk at worstCH1 1QQ: high flood riskCH1 1SB: high flood riskCH1 1SD: high flood riskCH1 1SL: high flood risk Chester City & the Garden Quarter Map of every postcode in the CH1 1 sector, by flood risk Of the 92 postcodes in the CH1 1 sector that ONS places, 4 have a home or business at high risk, 2 are at low risk at worst, 1 are at very low risk only and 85 are not on the Environment Agency's at-risk list. Places named: Chester City & the Garden Quarter. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Chester City & the Garden Quarter
  • A home or business at high risk: 4
  • At medium risk at worst: 0
  • At low risk at worst: 2
  • At very low risk only: 1
  • Not on the at-risk list: 85

Of the 92 postcodes in the CH1 1 sector that ONS places, 4 have a home or business at high risk, 2 are at low risk at worst, 1 are at very low risk only and 85 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. 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.

CH1 1SD26 at high riskCH1 1QQ1 at high riskCH1 1SB1 at high riskCH1 1SL1 at high risk

What do homes sell for in CH1 1?

Homes in CH1 1 sold for a typical £258,000 in the 12 months to August 2026, across 19 sales, up 31% on the 12 months before, HM Land Registry's figures show.

£258,000 typical price, the 12 months to August 2026
£197,000 12 months to August 2025
▲ up 31% on the 12 months before
  • Terraced £352,500 10 sales
  • Flat or maisonette £105,000 9 sales

Each bar is that kind's typical price, against the most expensive kind here.

Standard sales of homes at market value at the postcodes that start CH1 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 CH1 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.

CH1 1ABCH1 1AFCH1 1AGCH1 1DACH1 1DDCH1 1DECH1 1DFCH1 1EACH1 1EDCH1 1EECH1 1EFCH1 1ELCH1 1ERCH1 1ESCH1 1HACH1 1HBCH1 1HDCH1 1HECH1 1HFCH1 1HGCH1 1HHCH1 1HJCH1 1HLCH1 1HNCH1 1HPCH1 1HTCH1 1JGCH1 1JTCH1 1LBCH1 1LDCH1 1LECH1 1LFCH1 1LGCH1 1LHCH1 1LNCH1 1LQCH1 1LTCH1 1NACH1 1NECH1 1NGCH1 1NJCH1 1NLCH1 1NNCH1 1NQCH1 1NWCH1 1NZCH1 1PDCH1 1PPCH1 1PWCH1 1QECH1 1QGCH1 1QJCH1 1QLCH1 1QNCH1 1QPCH1 1QQCH1 1QSCH1 1QXCH1 1QYCH1 1QZCH1 1RACH1 1RDCH1 1RECH1 1RFCH1 1RGCH1 1RHCH1 1RJCH1 1RLCH1 1RNCH1 1RPCH1 1RQCH1 1RRCH1 1RSCH1 1RTCH1 1RUCH1 1RWCH1 1RXCH1 1RYCH1 1RZCH1 1SACH1 1SBCH1 1SDCH1 1SECH1 1SFCH1 1SGCH1 1SHCH1 1SLCH1 1SNCH1 1SZCH1 1XGCH1 1XPCH1 1YQ

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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