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St Columb Major & St Mawgan

Middle area

Central Cornwall. 11,049 people (mid-2024 estimate) in 102 square kilometres.

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Radon Affected Area by middle area

Worked out by Open Index · 2022

Under 1%90% or more

About 100% of people in St Columb Major & St Mawgan live in a 1 km square that the radon atlas marks as a radon Affected Area.

Median sale price
£292,000
Joint 3,623rd cheapest of 7,259
Worked out by Open Index
Population
10,828
661st most populated of 9,448
ONS Census 2021 · 2021
People in radon Affected Area squares
100%
UK 44%
Worked out by Open Index
Gigabit broadband coverage
46.1%
UK 87.8%
Ofcom · Jan 2026

Recorded crime in St Columb Major & St Mawgan

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in St Columb Major & St Mawgan at a rate of 64.9 per 1,000 people.

That compares with 70.9 per 1,000 people across Cornwall.

Worked out by Open Index from police.uk crime records and ONS and NISRA population estimates.

Recorded by police, 12 months to August 2026
Kind of crimeRecorded
Violence and sexual offences332
Other crime129
Criminal damage and arson85
Anti-social behaviour57
Shoplifting48
Drug offences24
Burglary21
Vehicle crime19
Robbery1
Theft from the person1

Source: police.uk, 12 months to August 2026

How St Columb Major & St Mawgan compares

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

St Columb Major & St MawganMiddle
Median sale price73 middle areas, Cornwall · 2025
Median sale price: every middle area in Cornwall73 areas from £200,000 to £575,000. The middle area is £292,750. St Columb Major & St Mawgan is £292,000.
£292,00036th cheapest
Population73 middle areas, Cornwall · 2021
Population: every middle area in Cornwall73 areas from 5,005 to 12,172. The middle area is 7,505. St Columb Major & St Mawgan is 10,828.
10,8283rd most populated
People in radon Affected Area squares73 middle areas, Cornwall · 2022
People in radon Affected Area squares: every middle area in Cornwall73 areas from 93.0% to 100.0%. The middle area is 100.0%. St Columb Major & St Mawgan is 100.0%.
100%joint most people in radon Affected Areas
Gigabit broadband coverage73 middle areas, Cornwall · Jan 2026
Gigabit broadband coverage: every middle area in Cornwall73 areas from 17.4% to 94.4%. The middle area is 70.2%. St Columb Major & St Mawgan is 46.1%.
46.1%9th lowest

Is St Columb Major & St Mawgan safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in St Columb Major & St Mawgan at a rate of 64.9 per 1,000 people.

That compares with 70.9 per 1,000 people across Cornwall.

Across England as a whole, the recorded crime rate was 96.3 per 1,000 people.

In August 2026 alone, 66 cases of crime and anti-social behaviour were recorded in St Columb Major & St Mawgan.

In the 12 months to August 2026, the most common types were violence and sexual offences (332), other crime (129) and criminal damage and arson (85).

Worked out by Open Index from police.uk crime records and ONS and NISRA population estimates.

Rates are per resident, so places that many people work in or visit, such as Westminster, the City of London and other city centres, have far higher rates than their residents alone would suggest.

Figures for the whole of Cornwall

These figures are published for the whole of Cornwall, not for each middle area, so they describe all of Cornwall and not St Columb Major & St Mawgan alone. See Cornwall

Average house price
£274,570
Down 2.9% in a year
HM Land Registry · Aug 2026
Median full-time pay
£35,002
64th lowest paid of 348
ONS earnings survey · 2025
House price to pay
7.8×
Joint 140th least affordable of 348
Worked out by Open Index
Deprivation score
22.3
112th most deprived of 296
MHCLG · England only
St Columb Major & St Mawgan in brief

The median price paid for a home in St Columb Major & St Mawgan was £292,000 in 2025.

St Columb Major & St Mawgan had 10,828 usual residents at the census.

About 100% of people in St Columb Major & St Mawgan live in a 1 km square that the radon atlas marks as a radon Affected Area.

In St Columb Major & St Mawgan, 46.1% of homes and businesses could get gigabit-capable broadband in January 2026.