Postcode · Swansea

SA3 4SX area guide

Who lives in SA3 4SX, what homes sell for, and how it compares on crime, schools and transport.

Neighbourhood: Mumbles & Newton
Council: Swansea
Region: Wales
Neighbourhood population: 1,653 (2024)

SA3 4SXSwansea

At a glance

What SA3 4SX is like

SA3 4SX is a postcode in the Mumbles & Newton area of Swansea. Because census and crime data isn’t published for single postcodes, the figures here cover the surrounding neighbourhood of about 1,653 people. 76.2% of households own their home, 18.7% rent privately and 4.9% are in social housing. The largest age group is 70–74, and 42.4% of adults are in work. It ranks among the more affluent parts of Wales. Higher-harm crime is well below the England and Wales average. Homes in SA3 4 sold for a median of £353,250 over the year to August 2026.

Scores

How SA3 4SX compares

Headline figures for SA3 4SX, set against Wales as a whole.

AffluenceMore

10.0/ 10

Less deprived than most. Scored from 1 (most deprived in Wales) to 10 (least deprived).

CrimeMore

4/ 10

Around the middle: 17.0 higher-harm crimes per 1,000 people a year vs 31.1 nationally.

House pricesMore

£353,250

Median over 106 sales in SA3 4, −9.4% on the year before.

TransportMore

3.0/ 10

Limited: 0 stations within a mile, 30 bus stops within 800m.

SchoolsMore

5 schools within 1 mile. None has a published inspection grade.

Household incomeMore

£54,538

Average annual income before tax, higher than 54% of neighbourhoods in England and Wales.

What stands out

Worth knowing before you invest

Where SA3 4SX differs most from the national average.

01
Among the more affluent placesPositive
Scores 10.0 out of 10 on the Welsh Index of Multiple Deprivation 2025, making it less deprived than most of Wales.
02
Prices fallingLook closer
The median sale price in SA3 4 is down 9.4% on the year before.
03
An older population
35.3% of residents are 65 or over, against 21.3% across Wales.
04
Mostly owner-occupied
76.2% of households own their home, against 66.1% across Wales.

Questions

SA3 4SX FAQs

Is SA3 4SX a good place to live?

Deprivation, crime, schools and transport at a glance.

It scores 10.0 out of 10 on the Welsh Index of Multiple Deprivation 2025, where 10 is the least deprived in Wales. Higher-harm crime runs at 17.0 per 1,000 people a year, band 4 of 10 nationally. Transport connectivity scores 3.0 out of 10 (limited).

How much does a house cost in SA3 4SX?

The median sale price over the last year was £353,250.

Homes in SA3 4 sold for a median of £353,250 across 106 sales in the year to August 2026, −9.4% on the year before. Prices come from HM Land Registry’s record of every residential sale.

Is SA3 4SX safe?

How recorded crime here compares with the national average.

Higher-harm crime (violence, robbery, burglary, vehicle crime and weapons offences) runs at 17.0 offences per 1,000 people a year around SA3 4SX, well below the 31.1 average across England and Wales, band 4 of 10.

Who lives in SA3 4SX?

Age, home ownership and housing from the census.

The largest age group is 70–74, at 7.9% of residents. 76.2% of households own their home. The most common property type is detached (42.1%).

Which council covers SA3 4SX?

The local authority for SA3 4SX is Swansea.

SA3 4SX comes under Swansea in Wales. Council tax, planning applications and bin collections are handled there.

How well connected is SA3 4SX?

Connectivity scores 3.0 out of 10.

There are 30 bus stops within 800m and 0 stations and tram stops within a mile, scoring 3.0 out of 10 (limited).

Sources: Census 2021 (ONS); ONS mid-year population estimates; police recorded crime; the English, Welsh and Scottish indices of deprivation; ONS small area income estimates; ONS private rents; DfE, Welsh and Scottish school registers and Ofsted; DfT NaPTAN; ORR estimates of station usage; HM Land Registry Price Paid Data. Contains public sector information licensed under the Open Government Licence v3.0. Contains OS data © Crown copyright and database right.

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