CO1 1 postcode sector in the CO1 district

CO1 1 is a sector of the CO1 district: every postcode that starts CO1 1. It has 234 postcodes in use, 28 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 CO1 1 sector, and which are new since 2020

New since 2020: 13
In use before 2020: 221
Outline: where 5 or more new postcodes since 2020 lie together

Of the 234 postcodes in the CO1 1 sector that ONS places, 13 are new since 2020 and 221 were in use before 2020.

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. New since 2020 means it came into use in January 2020 or later. A dashed outline shows where 5 or more lie within 150 metres of each other. It is not a boundary, and 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; when each came into use: the same directory; 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 5 newest postcodes

CO1 1BTJanuary 2025 CO1 1HLJanuary 2025 CO1 1RNMay 2022 CO1 1HUMarch 2022 CO1 1NQMarch 2022

Where the new postcodes lie together

6 new postcodes since 2020, outlined on the map. CO1 1HU, is the newest of them.

What do homes sell for in CO1 1?

Homes in CO1 1 sold for a typical £245,000 in the 12 months to August 2026, across 81 sales, up 1.2% on the 12 months before, HM Land Registry's figures show.

£245,000 typical price, the 12 months to August 2026

£242,000 12 months to August 2025

▲ up 1.2% on the 12 months before

Detached £400,000 5 sales
Semi-detached £317,500 10 sales
Terraced £280,000 28 sales
Flat or maisonette £165,000 38 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 CO1 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 CO1 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.

CO1 1AA CO1 1AG CO1 1AH CO1 1AJ CO1 1AN CO1 1AP CO1 1AQ CO1 1AT CO1 1AU CO1 1AW CO1 1AZ CO1 1BE CO1 1BG CO1 1BQ CO1 1BT CO1 1BX CO1 1BY CO1 1BZ CO1 1DA CO1 1DB CO1 1DF CO1 1DG CO1 1DH CO1 1DJ CO1 1DL CO1 1DN CO1 1DQ CO1 1DS CO1 1DU CO1 1DX CO1 1DZ CO1 1EA CO1 1ED CO1 1EE CO1 1EG CO1 1EH CO1 1EJ CO1 1EL CO1 1EN CO1 1EQ CO1 1ES CO1 1EU CO1 1EW CO1 1EY CO1 1EZ CO1 1FA CO1 1FB CO1 1FF CO1 1FQ CO1 1FW CO1 1GD CO1 1GJ CO1 1GP CO1 1GQ CO1 1GX CO1 1GY CO1 1HA CO1 1HB CO1 1HD CO1 1HE CO1 1HF CO1 1HG CO1 1HJ CO1 1HL CO1 1HN CO1 1HP CO1 1HQ CO1 1HR CO1 1HS CO1 1HU CO1 1HW CO1 1HZ CO1 1JB CO1 1JG CO1 1JH CO1 1JJ CO1 1JN CO1 1JQ CO1 1JR CO1 1JS CO1 1JT CO1 1JW CO1 1JX CO1 1JZ CO1 1LB CO1 1LD CO1 1LE CO1 1LF CO1 1LG CO1 1LH CO1 1LJ CO1 1LN CO1 1LQ CO1 1LS CO1 1LU CO1 1LX CO1 1LY CO1 1NF CO1 1NG CO1 1NH CO1 1NJ CO1 1NN CO1 1NP CO1 1NQ CO1 1NS CO1 1NT CO1 1NU CO1 1NX CO1 1NY CO1 1NZ CO1 1PA CO1 1PB CO1 1PE CO1 1PG CO1 1PJ CO1 1PN CO1 1PR CO1 1PT CO1 1PW CO1 1PX CO1 1PY CO1 1QD CO1 1QE CO1 1QG CO1 1QH CO1 1QJ CO1 1QP CO1 1QR CO1 1QS CO1 1QT CO1 1QW CO1 1QX CO1 1QY CO1 1RA CO1 1RB CO1 1RD CO1 1RE CO1 1RH CO1 1RJ CO1 1RL CO1 1RN CO1 1RP CO1 1RQ CO1 1RR CO1 1RS CO1 1RT CO1 1RU CO1 1RX CO1 1RY CO1 1RZ CO1 1SA CO1 1SB CO1 1SE CO1 1SF CO1 1SG CO1 1SH CO1 1SJ CO1 1SN CO1 1SP CO1 1SQ CO1 1SR CO1 1SS CO1 1ST CO1 1SU CO1 1SZ CO1 1TB CO1 1TD CO1 1TG CO1 1TH CO1 1TJ CO1 1TL CO1 1TN CO1 1TP CO1 1TS CO1 1TT CO1 1TW CO1 1TY CO1 1UA CO1 1UB CO1 1UD CO1 1UE CO1 1UF CO1 1UG CO1 1UL CO1 1UN CO1 1UP CO1 1UR CO1 1US CO1 1UT CO1 1UU CO1 1UW CO1 1UX CO1 1UZ CO1 1WA CO1 1WB CO1 1WD CO1 1WE CO1 1WF CO1 1WG CO1 1WJ CO1 1WN CO1 1WQ CO1 1WR CO1 1WW CO1 1XA CO1 1XD CO1 1XF CO1 1XJ CO1 1XL CO1 1XN CO1 1XP CO1 1XR CO1 1XS CO1 1XT CO1 1XW CO1 1XX CO1 1XY CO1 1XZ CO1 1YA CO1 1YD CO1 1YE CO1 1YF CO1 1YH CO1 1YN CO1 1ZA CO1 1ZE CO1 1ZH CO1 1ZP CO1 1ZR CO1 1ZS CO1 1ZT CO1 1ZU CO1 1ZX CO1 1ZY

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.

Other sectors in CO1

CO1 2 sector CO1 9 sector All of CO1 CO postcode area

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