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SO18

Postcode district

Postcode district covering Southampton, Bitterne and Harefield, in Southampton.

Approximate outline worked out by Open Index from the ONS Postcode Directory: each census output area belongs to the district that holds most of its postcodes. People, homes, recorded crime and broadband add up those output areas. House sales count every sale with an SO18 postcode. How census figures are added up

Open in map

Radon Affected Area by postcode district

Worked out by Open Index · 2022

Under 1%90% or more

About 31% of people in SO18 live in a 1 km square that the radon atlas marks as a radon Affected Area.

Median sale price
£275,000
Joint 940th cheapest of 2,235
Worked out by Open Index
Population
37,192
547th most populated of 2,756
ONS Census 2021 · 2021
People in radon Affected Area squares
31%
UK 44%
Worked out by Open Index
Gigabit broadband coverage
98.7%
UK 87.8%
Ofcom · Jan 2026

How SO18 compares

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

SO18Middle
Median sale price23 postcode districts, SO · 2025
Median sale price: every postcode district in SO23 areas from £213,750 to £822,500. The middle area is £385,000. SO18 is £275,000.
£275,000joint 5th cheapest
Population24 postcode districts, SO · 2021
Population: every postcode district in SO24 areas from 428 to 69,888. The middle area is 31,425. SO18 is 37,192.
37,1927th most populated
People in radon Affected Area squares24 postcode districts, SO · 2022
People in radon Affected Area squares: every postcode district in SO24 areas from 0.0% to 100.0%. The middle area is 33.5%. SO18 is 31.0%.
31%11th fewest people in radon Affected Areas
Gigabit broadband coverage24 postcode districts, SO · Jan 2026
Gigabit broadband coverage: every postcode district in SO24 areas from 42.0% to 98.8%. The middle area is 84.7%. SO18 is 98.7%.
98.7%2nd highest

Is SO18 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in SO18 at a rate of 87.7 per 1,000 people.

That compares with 86.0 per 1,000 people across the SO postcode area.

In August 2026 alone, 285 cases of crime and anti-social behaviour were recorded in SO18.

In the 12 months to August 2026, the most common types were violence and sexual offences (1,322), other crime (544) and anti-social behaviour (311).

A year earlier, the recorded crime rate in SO18 was 91.5 per 1,000 people.

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.

Deprivation in SO18, neighbourhood by neighbourhood

  • Deprivation is ranked by neighbourhood, so SO18 has no single figure. Of its 23 neighbourhoods with a rank:
  • Decile 1 (England’s most deprived 10%): 1 neighbourhood
  • Decile 2: 2 neighbourhoods
  • Decile 3: 1 neighbourhood
  • Decile 4: 6 neighbourhoods
  • Decile 5: 2 neighbourhoods
  • Decile 6: 4 neighbourhoods
  • Decile 7: 2 neighbourhoods
  • Decile 8: 2 neighbourhoods
  • Decile 9: 2 neighbourhoods
  • Decile 10 (England’s least deprived 10%): 1 neighbourhood

English Indices of Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in England.

Neighbourhoods in SO18

NamePeople (census)Recorded crime per 1,000Deprivation decileGigabit broadband
Eastleigh 009D1,45384.4 per 1,000699.2%
Eastleigh 009E1,16539.6 per 1,00010100.0%
Eastleigh 009F1,53754.4 per 1,000992.5%
Southampton 003A2,42396.8 per 1,000498.9%
Southampton 003B1,606114.8 per 1,000298.3%
Southampton 008A1,42380.5 per 1,0008100.0%
Southampton 008B1,50479.8 per 1,000899.4%
Southampton 008C1,57159.0 per 1,0006100.0%
Southampton 008D1,25357.3 per 1,000494.8%
Southampton 014A1,86240.8 per 1,000599.8%
Southampton 014B1,85170.9 per 1,000499.7%
Southampton 014C1,519116.6 per 1,000698.9%
Southampton 014D1,582103.2 per 1,000697.8%
Southampton 014E1,50442.7 per 1,0009100.0%
Southampton 016A1,84579.1 per 1,000798.4%
Southampton 016B1,26879.5 per 1,000394.5%
Southampton 016C1,737189.6 per 1,0001100.0%
Southampton 016D1,67163.1 per 1,0005100.0%
Southampton 016E1,56447.1 per 1,000799.7%
Southampton 018A1,48069.4 per 1,000499.0%
Southampton 018B1,60196.3 per 1,0004100.0%
Southampton 018C1,643138.0 per 1,000299.8%
Southampton 018D1,67785.0 per 1,0004100.0%

MPs for SO18

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

Middle areas in SO184

Postcode sectors in SO187

Council1

Towns in SO182

Postcode districts next to SO185

Nearest rail stations4

More in the SO postcode area2

SO18 in brief

SO18 is a postcode district covering Southampton, Bitterne and Harefield, in Southampton.

About 37,702 people lived in SO18 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £275,000 in 2025 across 499 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 87.7 per 1,000 people in the 12 months to August 2026 (police.uk).

The median price paid for a home in SO18 was £275,000 in 2025.

SO18 had 37,192 usual residents at the census.

About 31% of people in SO18 live in a 1 km square that the radon atlas marks as a radon Affected Area.

In SO18, 98.7% of homes and businesses could get gigabit-capable broadband in January 2026.