Chelmsford
Chelmsford is covered by postcode districts CM1, CM2, CM3, CM98 and CM99. It is in the Chelmsford council area, Essex.
Every postcode in Chelmsford, by flood risk
- A home or business at high risk: 30
- At medium risk at worst: 96
- At low risk at worst: 72
- At very low risk only: 6
- Not on the at-risk list: 2,180
- Outline: where 5 or more postcodes at high or medium risk lie together
Of the 2,384 postcodes in Chelmsford that ONS places, 30 have a home or business at high risk, 96 are at medium risk at worst, 72 are at low risk at worst, 6 are at very low risk only and 2,180 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. A dashed outline shows where 5 or more lie within 160 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.
The middle of its postcodes: latitude 51.7364, longitude 0.4805. 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
30 postcodes here have a home or business at high risk. These are the 12 with the most homes and businesses at that risk.
Beside each: how many of its homes and businesses the Environment Agency puts at that risk.
Where the postcodes at high or medium risk lie together
- 79 postcodes at high or medium risk, outlined on the map. CM1 1DN, is the one with most homes and businesses at high risk.
- 13 postcodes at high or medium risk, outlined on the map. CM2 0RW, is the one with most homes and businesses at high risk.
- 8 postcodes at high or medium risk, outlined on the map. CM1 1AE, is the one with most homes and businesses at high risk.
- 6 postcodes at high or medium risk, outlined on the map. CM2 6GL, is the one with most homes and businesses at high risk.
- 5 postcodes at high or medium risk, outlined on the map. CM2 6YL, is the one with most homes and businesses at high risk.
What is it like to live in Chelmsford?
Homes sold for a typical £376,480 in the 12 months to August 2026, down 0.9% on the 12 months before. At 1,823 of the 2,168 postcodes Ofcom reports on, every home and business can get gigabit broadband. The Environment Agency counts 1,727 homes and businesses at high or medium risk of flooding from rivers or the sea, at 204 of its 2,384 postcodes. It has 8 primary schools and 4 secondary schools at its postcodes, or more. At least 5 GP practices are at its postcodes. The nearest railway station is Chelmsford, 800 metres from the middle of its postcodes in a straight line.
We don't rate places; here are the figures so you can judge.
Source: HM Land Registry, Ofcom, the Environment Agency, the Department for Education, NHS England and the Department for Transport, as each section of this page says. See all our data sources
What do homes cost in Chelmsford?
Homes in Chelmsford sold for a typical £376,480 in the 12 months to August 2026, across 1,288 sales, down 0.9% on the 12 months before, HM Land Registry's figures show.
- 12 months to August 2025
- £380,000
- 12 months to August 2026
- £376,480
▼ down 0.9% on the 12 months before
Across the whole CM1 district, Chelmsford's main postcode district: a typical £395,000.
Sales at the postcodes ONS places in Chelmsford: 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
Are new homes being built in Chelmsford?
154 of the 2,384 postcodes now in use in Chelmsford came into use in January 2020 or later, ONS says. In the 12 months to August 2025, 55 of the 1,657 homes sold in Chelmsford were newly built (3%), HM Land Registry's records show; across the CM1 district, 14%.
The newest postcodes
A new postcode is often a new street or estate, but Royal Mail also makes new postcodes when it reorganises old ones, so not every one means new homes. Only postcodes still in use are counted.
New homes among the homes sold
| Period | In Chelmsford | Across the CM1 district |
|---|---|---|
| The 12 months to August 2026 | 8 of 1,288 (Under 1%) | 25 of 739 (3%) |
| The 12 months to August 2025 | 55 of 1,657 (3%) | 153 of 1,089 (14%) |
Standard sales of homes at market value that HM Land Registry marks as newly built. New homes take longer to be registered than other sales, so the latest 12 months count fewer of them than were sold. A share is given from 5 sales or more.
Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026; HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021, Open Government Licence v3.0. How we use it
What broadband can you get in Chelmsford?
Ofcom reports on 2,168 of the 2,384 postcodes in Chelmsford. At 1,823 of them every home and business can get gigabit broadband.
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 checkerSource: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it
Is Chelmsford at risk of flooding?
204 of the 2,384 postcodes in Chelmsford 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 1,727 homes and businesses in an area at high or medium risk.
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
Which schools are in Chelmsford?
The open schools at the postcodes in Chelmsford (the first 8 primaries by distance from its middle). A school for ages 4 to 18 is listed under both. Distances are straight lines from the middle of its postcodes. Distance is not a catchment: each council sets its own admission rules.
Primary
- The Cathedral Church of England Voluntary Aided Primary School, Chelmsford300 m 314 pupils, 315 places
- Trinity Road Primary School350 m 387 pupils, 420 places
- Our Lady Immaculate Catholic Primary School1.1 km 216 pupils, 218 places
- The Tyrrells School1.3 km 420 pupils, 420 places
- St Anne's School1.3 km 107 pupils, 165 places
- Maltese Road Primary School1.4 km 211 pupils, 210 places
- Oaklands Infant School1.5 km 168 pupils, 180 places
- Perryfields Infant School1.6 km 180 pupils, 180 places
Source: Department for Education, Get Information about Schools, read 17 October 2026, Open Government Licence v3.0. Each school opens its own record there. How we use it
How far is the station from Chelmsford?
The nearest railway station to the centre point of the postcodes in Chelmsford is Chelmsford Rail Station, 800 m away in a straight line.
- Chelmsford Rail Station Railway station 800 mWalk
- Beaulieu Park Railway station 3.6 kmCycle
- Hatfield Peverel Rail Station Railway station 9.1 kmDrive
Straight-line distances from the centre point, not routes. Walk: under 1.2 km. Cycle: 1.2 to 5 km. Drive: further.
Straight-line distances from the middle of the postcodes, not routes. Each postcode page lists its own nearest stations and bus stops. The Department for Transport's register does not say how often services run.
Source: Department for Transport, NaPTAN, read 17 October 2026, Open Government Licence v3.0. How we use it
Which GP surgeries are in Chelmsford?
The GP practices at the postcodes in Chelmsford, the first 5 by distance from its middle. Each practice sets the area it takes patients from, so check with it before registering.
- Rivermead Gate Med.ctr.700 m
- Beauchamp House750 m
- Sutherland Lodge Surgery1.2 km
- Chelmer Village Surgery1.7 km
- Whitley House Surgery2.0 km
Source: NHS England, Organisation Data Service (GP practices), read 17 October 2026, Open Government Licence v3.0. How we use it
Is Chelmsford safe? Crime recorded around it
Police.uk records 6,412 crimes and reports of anti-social behaviour within a mile of the middle of the postcodes in Chelmsford over the 12 months from September 2025 to August 2026. August 2026 is the latest month it has published. These are counts, not a rate: we hold no count of the people who live, work or pass through, so we do not say whether a place is safe.
Each month, September 2025 to August 2026
- 508 September 2025
- 516 October 2025
- 476 November 2025
- 494 December 2025
- 475 January 2026
- 463 February 2026
- 572 March 2026
- 554 April 2026
- 548 May 2026
- 579 June 2026
- 640 July 2026
- 587 August 2026
By kind, over the 12 months
Also: vehicle crime 123, burglary 119, bicycle theft 83, possession of weapons 79, theft from the person 78, robbery 77.
Police.uk says its locations "always represent the approximate location of a crime". Each crime is moved to the nearest of a fixed list of map points, each over a street centre, a public place or a commercial premises, chosen so that every point covers at least eight addresses or none. A mile is a wide circle: in a town it takes in the centre and its shops, where much crime is recorded.
Crime around one postcodeSource: Police.uk (data.police.uk), data to August 2026, from its download of 30 September 2026, Open Government Licence v3.0. How we use it
Who runs Chelmsford?
- District, borough or city council
- Chelmsford
- County council
- Essex
- Parliamentary constituencies
- Chelmsford (2,253), North West Essex (114) and Maldon (17)
- Police force area
- Essex
- Region
- East of England
- Country
- England
Where the place crosses a boundary, a row lists each side with its number of postcodes. Check a postcode for its own. What council am I in?
Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources
Moving to Chelmsford
Who to tell and what to sort out in your first week.
- Tell Chelmsford about council tax Council tax, on chelmsford.gov.uk
- Register to vote at the new address Register to vote on GOV.UK
- Register with a GP practice The GP practices in Chelmsford
- Take meter readings on the day you move in
- Power cut? Call 105. It is free. About 105, the power cut number
- Find out your bin day Find your rubbish collection day on GOV.UK
Chelmsford postcodes
2,384 postcodes in use in Chelmsford, by district:
Those districts are all in the CM postcode area.
Check a Chelmsford postcode
Enter a full postcode to see its ward, its flood risk, house prices in its sector and its nearest schools.
Do not know the postcode? What is my postcode?
Places near Chelmsford
With the typical price of a home in each, to set beside Chelmsford's £376,480. Distances are straight lines between the middles of each place's postcodes.
Questions about Chelmsford
- What is it like to live in Chelmsford?
- Homes sold for a typical £376,480 in the 12 months to August 2026, down 0.9% on the 12 months before. At 1,823 of the 2,168 postcodes Ofcom reports on, every home and business can get gigabit broadband. The Environment Agency counts 1,727 homes and businesses at high or medium risk of flooding from rivers or the sea, at 204 of its 2,384 postcodes. It has 8 primary schools and 4 secondary schools at its postcodes, or more. At least 5 GP practices are at its postcodes. The nearest railway station is Chelmsford, 800 metres from the middle of its postcodes in a straight line. We don't rate places; here are the figures so you can judge. Source: HM Land Registry, Ofcom, the Environment Agency, the Department for Education, NHS England and the Department for Transport, as each section of this page says.
- What is the postcode for Chelmsford?
- Chelmsford is covered by postcode districts CM1, CM2, CM3, CM98 and CM99, across 2,384 postcodes in use. Source: ONS Postcode Directory.
- Which council is Chelmsford in?
- Chelmsford is in the Chelmsford council area, and Essex is its county council. Source: ONS Postcode Directory.
- How much are houses in Chelmsford?
- Homes in Chelmsford sold for a typical £376,480 in the 12 months to August 2026, across 1,288 sales, down 0.9% on the 12 months before. Source: HM Land Registry Price Paid Data, files dated 28 September 2026.
- What schools are in Chelmsford?
- In Chelmsford, primary schools at its postcodes include The Cathedral Church of England Voluntary Aided Primary School, Chelmsford, Trinity Road Primary School and Our Lady Immaculate Catholic Primary School; secondary schools at its postcodes include Chelmsford Hospital School, King Edward VI Grammar School, Chelmsford and Chelmsford County High School for Girls. Source: Department for Education, Get Information about Schools, read 17 October 2026.
- Does Chelmsford have a railway station?
- Yes: Chelmsford is 800 metres from the centre point of the postcodes in Chelmsford, in a straight line. Source: Department for Transport, NaPTAN, read 17 October 2026.
- What broadband can you get in Chelmsford?
- Ofcom reports on 2,168 of the 2,384 postcodes in Chelmsford. At 1,823 of them every home and business can get gigabit broadband. Source: Ofcom, Connected Nations, Spring 2026.
- Is Chelmsford at risk of flooding?
- 204 of the 2,384 postcodes in Chelmsford 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 1,727 homes and businesses in an area at high or medium risk. This is long-term risk for the land, and leaves out surface water. Source: Environment Agency.
- Are new homes being built in Chelmsford?
- 154 of the 2,384 postcodes now in use in Chelmsford came into use in January 2020 or later, ONS says. In the 12 months to August 2025, 55 of the 1,657 homes sold in Chelmsford were newly built (3%), HM Land Registry's records show; across the CM1 district, 14%. Source: ONS Postcode Directory and HM Land Registry Price Paid Data.
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