Chelmsford City Council

What broadband can you get in Chelmsford?

Across Chelmsford, 88% of homes and businesses can get gigabit broadband and 81% full fibre, Ofcom says.

For one street, look up its postcode: each postcode page has its own figures. A provider's checker answers for one address.

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

How much is council tax in Chelmsford?

Band D for 2026‑27: £2,300 a year

Every other band is a fixed share of Band D, set in law. Band A is two thirds of it; band H is twice it.

Band D is the average across the area, including the county council, police, fire and combined authority charges, and parish or town council charges, so a home's own bill can be a little different. Bands other than D are worked out by us from Band D and rounded to the pound. A home's bill also takes off any discount, such as 25% for one adult living alone.

Source: Ministry of Housing, Communities and Local Government, Council Tax levels set by local authorities in England 2026 to 2027, Table 10, published 25 March 2026, Open Government Licence v3.0. How we use it

How many homes in Chelmsford are at risk of flooding?

Across Chelmsford, the Environment Agency puts 1,952 homes and businesses in an area at high or medium risk of flooding from rivers or the sea, at 371 postcodes with any property at 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. It 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

Surface water

In Chelmsford the Environment Agency counts 2,321 properties at high risk of flooding from surface water (2.4% of all its properties), 1,947 at medium risk (2%) and 7,003 at low risk (7.2%). Surface water is rain that cannot drain away fast enough.

Source: Environment Agency, Risk of Flooding from Surface Water, properties at risk by local authority, version 2025-09, listed 18 September 2026, Open Government Licence v3.0. How we use it

Schools, roads and care: Essex

Chelmsford has two councils. The county council, Essex, runs schools, roads, social care and libraries here.

• Report a road problemessex.gov.uk
• Apply for a school placeessex.gov.uk
• Care needs assessmentsessex.gov.uk

Postcode districts with postcodes in Chelmsford

• CM1 postcode district1,535 of its 1,561 postcodes in use are in Chelmsford.
• CM2 postcode districtAll 1,314 of its postcodes in use are in Chelmsford.
• CM3 postcode district1,037 of its 1,588 postcodes in use are in Chelmsford.
• CM4 postcode district165 of its 442 postcodes in use are in Chelmsford.
• CM5 postcode district1 of its 449 postcodes in use is in Chelmsford.
• CM6 postcode district8 of its 989 postcodes in use are in Chelmsford.
• CM11 postcode district80 of its 453 postcodes in use are in Chelmsford.
• CM77 postcode district1 of its 462 postcodes in use is in Chelmsford.
• CM98 postcode districtAll 19 of its postcodes in use are in Chelmsford.
• CM99 postcode districtAll 75 of its postcodes in use are in Chelmsford.
• SS11 postcode district138 of its 476 postcodes in use are in Chelmsford.

Counted from the ONS Postcode Directory. A postcode district is drawn for sorting post, so many cross a council's edge.

Its postcode areas

Beside each area: how many of its postcodes in use are in Chelmsford.