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Hertsmere

Constituency

The south west of the East of England. About 107,739 people in 120 square kilometres.

MP for Hertsmere

Sir Oliver DowdenConservativeMP since

They won by 7,992 votes on a 65.3% turnout.

As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

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Radon Affected Area by constituency

Worked out by Open Index · 2022

Under 1%90% or more

About 18% of people in Hertsmere live in a 1 km square that the radon atlas marks as a radon Affected Area.

Majority, 2024 general election
16.6%
Joint 266th largest majority of 650
House of Commons Library · Jul 2024
Turnout, 2024 general election
65.3%
Joint 157th highest turnout of 650
House of Commons Library · Jul 2024
Population
105,895
211th most populated of 650
ONS Census 2021 · 2021
People in radon Affected Area squares
18%
UK 44%
Worked out by Open Index

2024 general election result

Candidates in Hertsmere at the general election on 4 July 2024, in finishing order
CandidatePartyVotesShare
Oliver DowdenElectedConservative21,45144.7%
Josh TapperLabour13,45928.0%
Darren SelkusReform UK6,58413.7%
Emma MatanleLiberal Democrat3,7107.7%
John HumphriesGreen Party2,2674.7%
Ray BolsterIndependent5361.1%
Electorate
73,465
Turnout
65.3%
Majority
7,992 (16.6%)
Valid votes
48,007
Rejected ballots
204

Polling day . Shares are of valid votes; turnout is valid votes as a share of the electorate. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: House of Commons Library, UK Parliament election results. The result from the House of Commons Library

How Hertsmere compares

Each dot is a constituency. The black line marks the middle one.

HertsmereMiddle
Majority, 2024 general election650 constituencies, UK · Jul 2024
Majority, 2024 general election: every constituency in UK650 areas from 0.0% to 60.6%. The middle area is 14.1%. Hertsmere is 16.6%.
16.6%joint 266th largest majority
Turnout, 2024 general election650 constituencies, UK · Jul 2024
Turnout, 2024 general election: every constituency in UK650 areas from 40.0% to 75.2%. The middle area is 60.0%. Hertsmere is 65.3%.
65.3%joint 157th highest turnout
Population650 constituencies, UK · 2021
Population: every constituency in UK650 areas from 26,159 to 151,876. The middle area is 100,988. Hertsmere is 105,895.
105,895211th most populated
People in radon Affected Area squares650 constituencies, UK · 2022
People in radon Affected Area squares: every constituency in UK650 areas from 0.0% to 100.0%. The middle area is 39.0%. Hertsmere is 18.0%.
18%joint 229th fewest people in radon Affected Areas

Every constituency ranked: population and people in radon affected area squares.

What is the population of Hertsmere?

Hertsmere had 105,895 usual residents at the census.

Hertsmere is the 211th most populated of 650 in the UK.

Figures for the whole of Hertsmere

Most of Hertsmere lies in Hertsmere. These figures are published for the whole of Hertsmere, not for constituencies, so they describe the council and not Hertsmere itself. See Hertsmere

Average house price
£548,704
Up 1.3% in a year
HM Land Registry · Jul 2026
Median full-time pay
£43,813
68th highest paid of 348
ONS earnings survey · 2025
House price to pay
12.5×
17th least affordable of 348
Worked out by Open Index
Deprivation score
14.1
Joint 81st least deprived of 296
MHCLG · England only
Hertsmere in brief

The winner in Hertsmere had a majority of 16.6% of valid votes at the general election on 4 July 2024.

Turnout in Hertsmere at the general election on 4 July 2024 was 65.3%.

Hertsmere had 105,895 usual residents at the census.

About 18% of people in Hertsmere live in a 1 km square that the radon atlas marks as a radon Affected Area.