London Borough of Merton

What broadband can you get in Merton?

Across Merton, 95% of homes and businesses can get gigabit broadband and 82% 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 Merton?

Band D for 2026‑27: £2,147 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 Merton are at risk of flooding?

Across Merton, the Environment Agency puts 2,045 homes and businesses in an area at high or medium risk of flooding from rivers or the sea, at 375 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 Merton the Environment Agency counts 3,433 properties at high risk of flooding from surface water (3.6% of all its properties), 5,279 at medium risk (5.5%) and 13,989 at low risk (14.5%). 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

Postcode districts with postcodes in Merton

• CR4 postcode district862 of its 911 postcodes in use are in Merton.
• CR7 postcode district8 of its 609 postcodes in use are in Merton.
• KT3 postcode district107 of its 753 postcodes in use are in Merton.
• SM3 postcode district4 of its 379 postcodes in use are in Merton.
• SM4 postcode district533 of its 581 postcodes in use are in Merton.
• SW16 postcode district96 of its 1,353 postcodes in use are in Merton.
• SW17 postcode district92 of its 1,001 postcodes in use are in Merton.
• SW18 postcode district19 of its 1,242 postcodes in use are in Merton.
• SW19 postcode district1,408 of its 1,659 postcodes in use are in Merton.
• SW20 postcode district561 of its 570 postcodes in use are in Merton.

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 Merton.