CM77 postcode district: Great Notley and around, Essex

CM77 is a postcode district in Essex, with 462 postcodes in use in 3 sectors. It has postcodes in Great Notley, Rayne and Braintree. It is split between 3 councils: Braintree (457 postcodes), Uttlesford (4) and Chelmsford (1).

Postcodes in use
462
Sectors
3
Councils
3 councils
Places
3 places

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

Every postcode in CM77, by flood risk

Map of every postcode in CM77, by flood risk Of the 462 postcodes in CM77 that ONS places, 12 have a home or business at high risk, 4 are at medium risk at worst, 6 are at low risk at worst and 440 are not on the Environment Agency's at-risk list. Places named: Great Notley, Braintree, Silver End, Rayne. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A131 CM77 6AA: not on the flood risk listCM77 6AB: not on the flood risk listCM77 6AD: not on the flood risk listCM77 6AF: not on the flood risk listCM77 6AG: not on the flood risk listCM77 6BS: not on the flood risk listCM77 6BT: not on the flood risk listCM77 6BX: not on the flood risk listCM77 6BY: not on the flood risk listCM77 6DA: not on the flood risk listCM77 6DD: not on the flood risk listCM77 6DF: not on the flood risk listCM77 6DG: not on the flood risk listCM77 6DH: not on the flood risk listCM77 6DJ: not on the flood risk listCM77 6DL: not on the flood risk listCM77 6ES: not on the flood risk listCM77 6ET: not on the flood risk listCM77 6FG: not on the flood risk listCM77 6GX: not on the flood risk listCM77 6RA: not on the flood risk listCM77 6RD: not on the flood risk listCM77 6RE: not on the flood risk listCM77 6RG: not on the flood risk listCM77 6RH: not on the flood risk listCM77 6RJ: not on the flood risk listCM77 6RN: not on the flood risk listCM77 6RS: not on the flood risk listCM77 6RW: not on the flood risk listCM77 6RY: not on the flood risk listCM77 6RZ: not on the flood risk listCM77 6SA: not on the flood risk listCM77 6SB: not on the flood risk listCM77 6SD: not on the flood risk listCM77 6SH: not on the flood risk listCM77 6SJ: not on the flood risk listCM77 6SL: not on the flood risk listCM77 6SN: not on the flood risk listCM77 6SP: not on the flood risk listCM77 6SQ: not on the flood risk listCM77 6SR: not on the flood risk listCM77 6SS: not on the flood risk listCM77 6ST: not on the flood risk listCM77 6SU: not on the flood risk listCM77 6SW: not on the flood risk listCM77 6SY: not on the flood risk listCM77 6SZ: not on the flood risk listCM77 6TA: not on the flood risk listCM77 6TB: not on the flood risk listCM77 6TD: not on the flood risk listCM77 6TE: not on the flood risk listCM77 6TF: not on the flood risk listCM77 6TG: not on the flood risk listCM77 6TL: not on the flood risk listCM77 6TP: not on the flood risk listCM77 6TU: not on the flood risk listCM77 6WE: not on the flood risk listCM77 6WF: not on the flood risk listCM77 6XA: not on the flood risk listCM77 7AA: not on the flood risk listCM77 7AB: not on the flood risk listCM77 7AE: not on the flood risk listCM77 7AF: not on the flood risk listCM77 7AG: not on the flood risk listCM77 7AH: not on the flood risk listCM77 7AJ: not on the flood risk listCM77 7AL: not on the flood risk listCM77 7AN: not on the flood risk listCM77 7AP: not on the flood risk listCM77 7AQ: not on the flood risk listCM77 7AR: not on the flood risk listCM77 7AS: not on the flood risk listCM77 7AT: not on the flood risk listCM77 7AU: not on the flood risk listCM77 7AW: not on the flood risk listCM77 7AX: not on the flood risk listCM77 7AY: not on the flood risk listCM77 7AZ: not on the flood risk listCM77 7BA: not on the flood risk listCM77 7BD: not on the flood risk listCM77 7BN: not on the flood risk listCM77 7DF: not on the flood risk listCM77 7DG: not on the flood risk listCM77 7FD: not on the flood risk listCM77 7FL: not on the flood risk listCM77 7FP: not on the flood risk listCM77 7FQ: not on the flood risk listCM77 7FS: not on the flood risk listCM77 7FT: not on the flood risk listCM77 7FX: not on the flood risk listCM77 7FY: not on the flood risk listCM77 7FZ: not on the flood risk listCM77 7GB: not on the flood risk listCM77 7GF: not on the flood risk listCM77 7GG: not on the flood risk listCM77 7GH: not on the flood risk listCM77 7GJ: not on the flood risk listCM77 7GN: not on the flood risk listCM77 7GR: not on the flood risk listCM77 7GS: not on the flood risk listCM77 7GZ: not on the flood risk listCM77 7JR: not on the flood risk listCM77 7JS: not on the flood risk listCM77 7JW: not on the flood risk listCM77 7PA: not on the flood risk listCM77 7PP: not on the flood risk listCM77 7PR: not on the flood risk listCM77 7PU: not on the flood risk listCM77 7PX: not on the flood risk listCM77 7PZ: not on the flood risk listCM77 7QA: not on the flood risk listCM77 7QB: not on the flood risk listCM77 7QD: not on the flood risk listCM77 7QF: not on the flood risk listCM77 7QH: not on the flood risk listCM77 7QL: not on the flood risk listCM77 7QU: not on the flood risk listCM77 7QW: not on the flood risk listCM77 7QZ: not on the flood risk listCM77 7TZ: not on the flood risk listCM77 7UA: not on the flood risk listCM77 7UB: not on the flood risk listCM77 7UD: not on the flood risk listCM77 7UE: not on the flood risk listCM77 7UG: not on the flood risk listCM77 7UH: not on the flood risk listCM77 7UJ: not on the flood risk listCM77 7UL: not on the flood risk listCM77 7UP: not on the flood risk listCM77 7UQ: not on the flood risk listCM77 7UR: not on the flood risk listCM77 7US: not on the flood risk listCM77 7UU: not on the flood risk listCM77 7UW: not on the flood risk listCM77 7UX: not on the flood risk listCM77 7UY: not on the flood risk listCM77 7UZ: not on the flood risk listCM77 7WA: not on the flood risk listCM77 7WE: not on the flood risk listCM77 7WG: not on the flood risk listCM77 7WH: not on the flood risk listCM77 7WN: not on the flood risk listCM77 7WP: not on the flood risk listCM77 7WR: not on the flood risk listCM77 7WT: not on the flood risk listCM77 7WX: not on the flood risk listCM77 7WY: not on the flood risk listCM77 7WZ: not on the flood risk listCM77 7XD: not on the flood risk listCM77 7XE: not on the flood risk listCM77 7XJ: not on the flood risk listCM77 7XP: not on the flood risk listCM77 7XR: not on the flood risk listCM77 7XS: not on the flood risk listCM77 7XU: not on the flood risk listCM77 7YA: not on the flood risk listCM77 7YB: not on the flood risk listCM77 7YD: not on the flood risk listCM77 7YE: not on the flood risk listCM77 7YJ: not on the flood risk listCM77 7YP: not on the flood risk listCM77 7YQ: not on the flood risk listCM77 7YT: not on the flood risk listCM77 7YX: not on the flood risk listCM77 7YY: not on the flood risk listCM77 7ZA: not on the flood risk listCM77 7ZB: not on the flood risk listCM77 7ZQ: not on the flood risk listCM77 7ZR: not on the flood risk listCM77 8AA: not on the flood risk listCM77 8AB: not on the flood risk listCM77 8AD: not on the flood risk listCM77 8AE: not on the flood risk listCM77 8AF: not on the flood risk listCM77 8AH: not on the flood risk listCM77 8AJ: not on the flood risk listCM77 8AL: not on the flood risk listCM77 8AN: not on the flood risk listCM77 8AQ: not on the flood risk listCM77 8AR: not on the flood risk listCM77 8AS: not on the flood risk listCM77 8AT: not on the flood risk listCM77 8AU: not on the flood risk listCM77 8AY: not on the flood risk listCM77 8AZ: not on the flood risk listCM77 8BA: not on the flood risk listCM77 8BB: not on the flood risk listCM77 8BD: not on the flood risk listCM77 8BE: not on the flood risk listCM77 8BG: not on the flood risk listCM77 8BH: not on the flood risk listCM77 8BJ: not on the flood risk listCM77 8BL: not on the flood risk listCM77 8BN: not on the flood risk listCM77 8BP: not on the flood risk listCM77 8BQ: not on the flood risk listCM77 8BS: not on the flood risk listCM77 8BT: not on the flood risk listCM77 8BU: not on the flood risk listCM77 8BW: not on the flood risk listCM77 8BX: not on the flood risk listCM77 8BY: not on the flood risk listCM77 8BZ: not on the flood risk listCM77 8DA: not on the flood risk listCM77 8DB: not on the flood risk listCM77 8DG: not on the flood risk listCM77 8DH: not on the flood risk listCM77 8DJ: not on the flood risk listCM77 8DL: not on the flood risk listCM77 8DN: not on the flood risk listCM77 8DP: not on the flood risk listCM77 8DR: not on the flood risk listCM77 8DS: not on the flood risk listCM77 8DT: not on the flood risk listCM77 8DU: not on the flood risk listCM77 8DW: not on the flood risk listCM77 8DX: not on the flood risk listCM77 8DY: not on the flood risk listCM77 8DZ: not on the flood risk listCM77 8EA: not on the flood risk listCM77 8EB: not on the flood risk listCM77 8EF: not on the flood risk listCM77 8EH: not on the flood risk listCM77 8EL: not on the flood risk listCM77 8EN: not on the flood risk listCM77 8EP: not on the flood risk listCM77 8EQ: not on the flood risk listCM77 8ER: not on the flood risk listCM77 8ES: not on the flood risk listCM77 8ET: not on the flood risk listCM77 8EW: not on the flood risk listCM77 8EY: not on the flood risk listCM77 8EZ: not on the flood risk listCM77 8FA: not on the flood risk listCM77 8FB: not on the flood risk listCM77 8FD: not on the flood risk listCM77 8FF: not on the flood risk listCM77 8FG: not on the flood risk listCM77 8FH: not on the flood risk listCM77 8FJ: not on the flood risk listCM77 8FL: not on the flood risk listCM77 8FN: not on the flood risk listCM77 8FP: not on the flood risk listCM77 8FS: not on the flood risk listCM77 8FT: not on the flood risk listCM77 8FU: not on the flood risk listCM77 8FW: not on the flood risk listCM77 8FX: not on the flood risk listCM77 8FY: not on the flood risk listCM77 8FZ: not on the flood risk listCM77 8GA: not on the flood risk listCM77 8GE: not on the flood risk listCM77 8GH: not on the flood risk listCM77 8GJ: not on the flood risk listCM77 8GL: not on the flood risk listCM77 8GN: not on the flood risk listCM77 8GP: not on the flood risk listCM77 8GQ: not on the flood risk listCM77 8GS: not on the flood risk listCM77 8GU: not on the flood risk listCM77 8GW: not on the flood risk listCM77 8GZ: not on the flood risk listCM77 8HB: not on the flood risk listCM77 8HD: not on the flood risk listCM77 8HE: not on the flood risk listCM77 8HF: not on the flood risk listCM77 8HH: not on the flood risk listCM77 8HL: not on the flood risk listCM77 8HN: not on the flood risk listCM77 8HP: not on the flood risk listCM77 8HQ: not on the flood risk listCM77 8HS: not on the flood risk listCM77 8HT: not on the flood risk listCM77 8HU: not on the flood risk listCM77 8HW: not on the flood risk listCM77 8HX: not on the flood risk listCM77 8HY: not on the flood risk listCM77 8JA: not on the flood risk listCM77 8JB: not on the flood risk listCM77 8JE: not on the flood risk listCM77 8JF: not on the flood risk listCM77 8JG: not on the flood risk listCM77 8JJ: not on the flood risk listCM77 8JL: not on the flood risk listCM77 8JN: not on the flood risk listCM77 8JS: not on the flood risk listCM77 8JT: not on the flood risk listCM77 8JU: not on the flood risk listCM77 8JW: not on the flood risk listCM77 8JX: not on the flood risk listCM77 8JY: not on the flood risk listCM77 8JZ: not on the flood risk listCM77 8LB: not on the flood risk listCM77 8LD: not on the flood risk listCM77 8LE: not on the flood risk listCM77 8LF: not on the flood risk listCM77 8LG: not on the flood risk listCM77 8LH: not on the flood risk listCM77 8LL: not on the flood risk listCM77 8LN: not on the flood risk listCM77 8LP: not on the flood risk listCM77 8LQ: not on the flood risk listCM77 8LS: not on the flood risk listCM77 8LT: not on the flood risk listCM77 8LU: not on the flood risk listCM77 8LW: not on the flood risk listCM77 8LX: not on the flood risk listCM77 8NA: not on the flood risk listCM77 8ND: not on the flood risk listCM77 8NE: not on the flood risk listCM77 8NG: not on the flood risk listCM77 8NH: not on the flood risk listCM77 8NJ: not on the flood risk listCM77 8NQ: not on the flood risk listCM77 8NT: not on the flood risk listCM77 8NU: not on the flood risk listCM77 8NX: not on the flood risk listCM77 8NY: not on the flood risk listCM77 8NZ: not on the flood risk listCM77 8PA: not on the flood risk listCM77 8PB: not on the flood risk listCM77 8PD: not on the flood risk listCM77 8PE: not on the flood risk listCM77 8PF: not on the flood risk listCM77 8PG: not on the flood risk listCM77 8PJ: not on the flood risk listCM77 8PL: not on the flood risk listCM77 8PP: not on the flood risk listCM77 8PR: not on the flood risk listCM77 8PT: not on the flood risk listCM77 8PU: not on the flood risk listCM77 8PW: not on the flood risk listCM77 8PX: not on the flood risk listCM77 8PZ: not on the flood risk listCM77 8QB: not on the flood risk listCM77 8QE: not on the flood risk listCM77 8QG: not on the flood risk listCM77 8QH: not on the flood risk listCM77 8QJ: not on the flood risk listCM77 8QN: not on the flood risk listCM77 8QP: not on the flood risk listCM77 8QQ: not on the flood risk listCM77 8QR: not on the flood risk listCM77 8QS: not on the flood risk listCM77 8QT: not on the flood risk listCM77 8QU: not on the flood risk listCM77 8QW: not on the flood risk listCM77 8RB: not on the flood risk listCM77 8XW: not on the flood risk listCM77 8YG: not on the flood risk listCM77 8YH: not on the flood risk listCM77 8YJ: not on the flood risk listCM77 8YL: not on the flood risk listCM77 8ZS: not on the flood risk listCM77 8ZT: not on the flood risk listCM77 8ZZ: not on the flood risk listCM77 6GE: low flood risk at worstCM77 6SF: low flood risk at worstCM77 8EG: low flood risk at worstCM77 8NW: low flood risk at worstCM77 8NS: low flood risk at worstCM77 8RS: low flood risk at worstCM77 6BU: medium flood risk at worstCM77 6BZ: medium flood risk at worstCM77 6DE: medium flood risk at worstCM77 8DQ: medium flood risk at worstCM77 6BA: high flood riskCM77 6DN: high flood riskCM77 6SG: high flood riskCM77 8AG: high flood riskCM77 8AP: high flood riskCM77 8ED: high flood riskCM77 8EE: high flood riskCM77 8EU: high flood riskCM77 8FR: high flood riskCM77 8PH: high flood riskCM77 8PN: high flood riskCM77 8PQ: high flood risk Great NotleyBraintreeSilver EndRayne Map of every postcode in CM77, by flood risk Of the 462 postcodes in CM77 that ONS places, 12 have a home or business at high risk, 4 are at medium risk at worst, 6 are at low risk at worst and 440 are not on the Environment Agency's at-risk list. Places named: Great Notley, Braintree, Silver End, Rayne. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A131 Great NotleyBraintreeSilver EndRayne
  • A home or business at high risk: 12
  • At medium risk at worst: 4
  • At low risk at worst: 6
  • At very low risk only: 0
  • Not on the at-risk list: 440

Of the 462 postcodes in CM77 that ONS places, 12 have a home or business at high risk, 4 are at medium risk at worst, 6 are at low risk at worst and 440 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.

The middle of its postcodes: latitude 51.8660, longitude 0.5534. 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

The postcodes at high risk

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

CM77 8ED5 at high riskCM77 8FR5 at high riskCM77 6SG2 at high riskCM77 8AG2 at high riskCM77 8EU2 at high riskCM77 8PN2 at high riskCM77 8AP1 at high riskCM77 8PQ1 at high riskCM77 6BA1 at high riskCM77 6DN1 at high riskCM77 8EE1 at high riskCM77 8PH1 at high risk

What broadband can you get in CM77?

Ofcom reports on 453 of the 462 postcodes in CM77. At 344 of them every home and business can get gigabit broadband, and at 5 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit344 of 453
Postcodes where every home can get superfast391 of 453
Postcodes where some cannot get decent broadband5 of 453

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 CM77 at risk of flooding?

22 of the 462 postcodes in CM77 have a home or business in an area at risk of flooding from rivers or the sea, the Environment Agency says. At those, it puts 51 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 22 of 462 postcodes High: 24Medium: 27Low: 42

High: 3.3% or more a year (1 in 30). Medium: 1% to 3.3% a year. Low: 0.1% to 1% a year. Very low: under 0.1% a year (1 in 1,000). Each band is the chance of flooding in any one year.

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 CM77?

Homes in CM77 sold for a typical £420,000 in the 12 months to August 2026, across 178 sales, up 11.6% on the 12 months before, HM Land Registry's figures show.

£420,000 typical price, the 12 months to August 2026
£376,195 12 months to August 2025
▲ up 11.6% on the 12 months before
  • Detached £525,000 85 sales
  • Semi-detached £350,000 59 sales
  • Terraced £310,000 27 sales
  • Flat or maisonette £180,000 7 sales

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

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 CM77

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

CM77 687 postcodesCM77 7139 postcodesCM77 8236 postcodes
UK postcode format explained

Places in CM77

Towns and villages with postcodes in CM77, and how many each has here.

Great Notley postcodes,155Rayne postcodes,53Braintree postcodes,21

Who covers CM77

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

  • Braintree303
  • Witham158
  • North West Essex1

Police force areas

  • Essex462

Next to CM77

CM24 postcode district CM92 postcode district All CM districts Great Notley postcodes

"Next to" is by number: the districts before and after CM77 in the CM area.

Check a postcode

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