CM98 postcode district: Chelmsford and around, Essex

CM98 is a postcode district in Essex, with 19 postcodes in use in 1 sector. It has postcodes in Chelmsford. Its council is Chelmsford.

Postcodes in use
19
Sectors
1
Council
Chelmsford
Places
Chelmsford

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

Every postcode in CM98, by flood risk

Map of every postcode in CM98, by flood risk Of the 19 postcodes in CM98 that ONS places, 19 are not on the Environment Agency's at-risk list. Places named: Chelmer Village and Beaulieu Park. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A138 CM98 1AA: not on the flood risk listCM98 1AY: not on the flood risk list Chelmer Village and Beaulieu Park Map of every postcode in CM98, by flood risk Of the 19 postcodes in CM98 that ONS places, 19 are not on the Environment Agency's at-risk list. Places named: Chelmer Village and Beaulieu Park. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A138A12 Chelmer Village and Beaulieu Park
  • 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: 19

Of the 19 postcodes in CM98 that ONS places, 19 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. Names in italics are council wards: we hold no town or village names here.

The middle of its postcodes: latitude 51.7521, longitude 0.5185. 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

Is CM98 at risk of flooding?

None of the 19 postcodes in CM98 is on the Environment Agency's list of postcodes with a home or business in an area at risk of flooding from rivers or the sea.

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

Postcodes in CM98

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

CM98 119 postcodes
UK postcode format explained

Places in CM98

Towns and villages with postcodes in CM98, and how many each has here.

Chelmsford postcodes,19

Who covers CM98

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

  • Chelmsford19

Police force areas

  • Essex19

Next to CM98

CM92 postcode district CM99 postcode district All CM districts Chelmsford postcodes

"Next to" is by number: the districts before and after CM98 in the CM area.

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