Swansea SA1 postcode area

Area evidence, not a full-postcode grade

The SA1 prefix covers multiple addresses and may cross council or warning-area boundaries. The 0–6 Data & Preparedness Score below counts documented sources for this district. It is separate from the conditional A–G disruption grade on a full-postcode report.

A–G grade for SA1: not assessed at district level. A complete postcode is needed to check live utility and road incidents and listed emergency-care distance. A grade appears only when all three inputs can be scored. How the full-postcode grade works.

Population density compared with the UK

UK average: 287 residents/km². Figures below cover the named councils.

• Neath Port Talbot322 residents/km²UK council density percentile: 33/100
• Swansea661 residents/km²UK council density percentile: 53/100

Preparedness conclusion for SA1

Identify the council and use the Welsh warning service for the full address.

Neath Port Talbot is 35 residents/km² above the UK average of 287 residents/km². Swansea is 374 residents/km² above the UK average of 287 residents/km².

The directory associates SA1 with Swansea and Neath Port Talbot. Their authority figures describe distinct areas, and the English warning integration supplies no count for either. Natural Resources Wales provides the current Welsh warning information.

Local flood evidence for SA1

Recorded flooding

No sufficiently local historical flood incident has been verified for this district. The source-coverage score does not award the historical-data point.

Official warning area

Natural Resources Wales names Swansea Marina and Parc Tawe in a River Tawe warning area, with landmarks including the National Waterfront Museum. This is an SA1-area service, not blanket coverage of the whole district.

Data & Preparedness Score 5/6

Warning coverage 2/2

A named official warning or alert area is documented locally. Check the mapped boundary for your address.

Official guidance 2/2

Local authority or regional preparedness guidance is linked below.

Data completeness 1/2

Council density is available. A local flood record is documented.

Emergency information for SA1

If the address and your destination are on different sides of a council boundary, keep the local updates for both. Agree who will pass on instructions if someone in the group cannot see them directly.

Swansea Council's flood advice explains household responsibility and the council's response priorities when flooding is widespread. Its local assessment identifies central Swansea among communities with combined river, tidal and surface-water exposure, but that is not a verified past flood at a specific SA1 property.

• Swansea Council flood advice
• Find the local authority for your address
• UK Emergency Alerts
• UK government household preparedness

Check a full SA1 postcode

Enter the complete postcode, including its final three characters, to see the nine-indicator evidence breakdown, any supported provisional A–G grade, local incident results and a check against official flood-warning boundaries.

How the nine indicators apply

A district prefix covers many full postcodes. This page has no live A–G disruption grade and does not assess war or nuclear risk. Enter a complete postcode above to see the nine-indicator breakdown for its returned location.

Can contribute to a full-postcode grade

Infrastructure: matched electricity or water incidents where covered. Medical resources: straight-line distance to a listed emergency department. Road access: nearby active TfL events where covered. Missing feeds are excluded, not scored as zero.

Can be shown, without a risk score

Wind direction and speed, one-hour rainfall forecast, and elevation with sampled local relief. These do not establish exposure to a particular incident or protection at a building.

No verified postcode-level assessment

Military targeting, building structure and designated shelter availability. A postcode prefix cannot supply these details.

Full scoring method · Compare full postcodes · UK Emergency Alerts