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St Martin's

Ward

North east Isles of Scilly. About 157 people (mid-2024 estimate) in 2.8 square kilometres.

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Radon Affected Area by ward

Worked out by Open Index · 2022

Under 1%90% or more

About 100% of people in St Martin's live in a 1 km square that the radon atlas marks as a radon Affected Area.

Population
136
Least populated of 8,397
ONS Census 2021 · 2021
People in radon Affected Area squares
100%
UK 44%
Worked out by Open Index
Gigabit broadband coverage
0.0%
UK 87.8%
Ofcom · Jan 2026
Aged 15 to 64
57.5%
Joint 1,245th lowest of 8,397
ONS Census 2021 · 2021

How St Martin's compares

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

St Martin'sMiddle
Population4 wards, Isles of Scilly · 2021
Population: every ward in Isles of Scilly4 areas from 136 to 1,593. The middle area is 163. St Martin's is 136.
136least populated
People in radon Affected Area squares4 wards, Isles of Scilly · 2022
People in radon Affected Area squares: every ward in Isles of Scilly4 areas from 100.0% to 100.0%. The middle area is 100.0%. St Martin's is 100.0%.
100%
Gigabit broadband coverage4 wards, Isles of Scilly · Jan 2026
Gigabit broadband coverage: every ward in Isles of Scilly4 areas from 0.0% to 58.7%. The middle area is 33.6%. St Martin's is 0.0%.
0.0%lowest
Aged 15 to 644 wards, Isles of Scilly · 2021
Aged 15 to 64: every ward in Isles of Scilly4 areas from 54.4% to 79.7%. The middle area is 58.6%. St Martin's is 57.5%.
57.5%2nd lowest

What is the population of St Martin's?

St Martin's had 136 usual residents at the census.

St Martin's is the least populated of 8,397 in the UK.

Figures for the whole of Isles of Scilly

These figures are published for the whole of Isles of Scilly, not for each ward, so they describe all of Isles of Scilly and not St Martin's alone. See Isles of Scilly

Deprivation score
12.7
Joint 57th least deprived of 296
MHCLG · England only
Population estimate
2,299
Down 3.5% in a year
ONS population estimates · 2025
Median sale price
£545,000
Joint 23rd most expensive of 318
Worked out by Open Index
Full-fibre broadband coverage
50.2%
UK 81.0%
Ofcom · Jan 2026
St Martin's in brief

St Martin's had 136 usual residents at the census.

About 100% of people in St Martin's live in a 1 km square that the radon atlas marks as a radon Affected Area.

In St Martin's, 0.0% of homes and businesses could get gigabit-capable broadband in January 2026.

57.5% of residents in St Martin's were aged 15 to 64 at the census.