Data

Merseyside in numbers

The data behind every page, gathered in two tables: totals for the five boroughs against England and Wales, then each borough in full, with Liverpool as a reference. Each figure carries its source and date below.

Wirral · Sefton · St Helens · Knowsley · Halton · checked 3 November 2026

Five boroughs against England and Wales

MeasureFive boroughsShareEngland and Wales
Households, 2021469,363-24,783,199
Mains gas alone394,67584.1%73.8%
Electric alone21,7694.6%8.5%
Oil or LPG alone3,1310.7%4.5%
Heat network alone1,9290.4%0.9%
Semi-detached202,10443.1%31.5%
Terraced118,62825.3%23.2%
Detached79,32616.9%23.2%
Purpose-built flats50,85510.8%16.7%
Owned300,28064.0%61.6%
Social rent86,09918.3%17.1%
Private rent79,29116.9%20.3%
BUS heat pumps per 1,000 households7191.53.9
Sums of the five boroughs; England and Wales from the same census tables and BUS statistics.

Each borough in full

BoroughHouseholdsGas aloneElectric aloneNo gas meterSemiTerracedOwnedSocial rentBUS paidListed
Wirral143,25384.3%4.8%4.88%41.6%23.5%65.0%15.4%257736
Sefton123,07583.6%5.4%5.62%46.1%18.4%66.6%14.4%185568
St Helens81,01184.9%3.7%2.96%47.0%28.3%64.2%19.7%118151
Knowsley66,07383.4%4.2%2.21%43.1%31.5%59.5%25.3%75105
Halton55,95184.3%4.5%3.35%34.5%33.4%60.5%24.3%84129
Liverpool (ref.)207,49177.8%9.8%15.65%30.7%37.9%46.8%26.4%1841,569
ONS Census 2021 (households, heating, house type, tenure); DESNZ off-gas (2024) and BUS (May 2022 to September 2026); planning.data.gov.uk (November 2026). Liverpool is a comparison row.

Definitions

Households
Counted on census day, 21 March 2021. The base for every percentage except the off-gas share.
Gas alone, electric alone, oil or LPG alone, heat network alone
Households whose central heating uses only that one type. Households with a mix of types are left out of these columns.
No gas meter
The government's estimate, for 2024, of the share of domestic properties with no gas meter, built from meter records rather than the census.
Semi, terraced, detached, purpose-built flats
The type of building the household lived in. Flats in converted houses or above shops are not in the flats column.
Owned, social rent, private rent
Owned means outright or with a mortgage or loan. Social rent is from a council or housing association. Private rent covers private landlords, letting agencies and other private lettings.
BUS paid
Boiler Upgrade Scheme vouchers paid for the borough between May 2022 and September 2026. Heat pumps funded in other ways are not included.
Listed
Entries in the national planning dataset's listed-building list for the borough, read on 3 November 2026.

Four things the numbers say

Gas dominates. 84.1% of households used mains gas alone, about ten points above England and Wales, and the share varies by less than two points across the five.

Semis are the norm. 43.1% of households live in semi-detached houses, well above the national 31.5%, so the typical heat pump job here is a gas-heated semi.

Tenure splits the boroughs. Sefton and Wirral have the most owner-occupiers; Knowsley and Halton have about a quarter of households in social housing.

Grants trail the country. From 1.1 heat pumps per 1,000 households in Knowsley to 1.8 in Wirral, every borough is well under the national rate of about 3.9.

When each figure was read

The census is from March 2021. The off-gas estimates are the 2024 edition, published roughly yearly. The Boiler Upgrade Scheme statistics are monthly; these run to September 2026. The listed-building counts and the council pages were read on 3 November 2026. The sources page links to every dataset, and if a figure here disagrees with its source, the source is right.

Liverpool as a reference

Liverpool sits in the tables only to show how different the city is from the boroughs around it. Its homes are more often terraced, rented and electrically heated, its off-gas share is several times higher, and its grant rate is lower still. Those differences are why this site treats the five boroughs as their own group rather than as suburbs of the city. Liverpool's own figures are set out in full by sources covering the city itself.

Questions from Merseyside homes

How many households are in the five boroughs?

469,363 in 2021: Wirral 143,253, Sefton 123,075, St Helens 81,011, Knowsley 66,073, Halton 55,951.

Why is Liverpool shown separately?

It is a comparison row only. The site covers the five boroughs around the city, which share a combined authority with it but differ in housing and heating.

Can I reuse these figures?

They come from public datasets, most under the Open Government Licence, so you can reuse them with the same attribution. The sources page lists each one.

Sources

  1. ONS Census 2021, TS044, TS046, TS054
  2. DESNZ, off-gas estimates
  3. DESNZ, Boiler Upgrade Scheme statistics
  4. planning.data.gov.uk, listed buildings

Read on 3 November 2026. If a source now says something different, the source is right.

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