Hertsmere Borough Council

What broadband can you get in Hertsmere?

Across Hertsmere, 90% of homes and businesses can get gigabit broadband and 72% 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 Hertsmere?

Band D for 2026‑27: £2,406 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 Hertsmere are at risk of flooding?

Across Hertsmere, the Environment Agency puts 603 homes and businesses in an area at high or medium risk of flooding from rivers or the sea, at 116 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 Hertsmere the Environment Agency counts 3,574 properties at high risk of flooding from surface water (6.9% of all its properties), 1,952 at medium risk (3.8%) and 5,137 at low risk (10%). 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: Hertfordshire

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

• Report a road problemhertfordshire.gov.uk
• Apply for a school placehertfordshire.gov.uk

Postcode districts with postcodes in Hertsmere

• AL2 postcode district11 of its 737 postcodes in use are in Hertsmere.
• AL4 postcode district3 of its 787 postcodes in use are in Hertsmere.
• EN4 postcode district3 of its 566 postcodes in use are in Hertsmere.
• EN5 postcode district27 of its 1,045 postcodes in use are in Hertsmere.
• EN6 postcode district631 of its 873 postcodes in use are in Hertsmere.
• HA7 postcode district1 of its 847 postcodes in use is in Hertsmere.
• WD6 postcode district1,073 of its 1,075 postcodes in use are in Hertsmere.
• WD7 postcode district406 of its 428 postcodes in use are in Hertsmere.
• WD19 postcode district5 of its 693 postcodes in use are in Hertsmere.
• WD23 postcode district756 of its 769 postcodes in use are in Hertsmere.
• WD25 postcode district107 of its 687 postcodes in use are in Hertsmere.

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 Hertsmere.